Preparation and electrical properties of composites based on (Cu₆PS₅I)₁₋ₓ(Cu₇PS₆)ₓ mixed crystals
(Cu₆PS₅I)₁₋ₓ(Cu₇PS₆)ₓ mixed crystals were grown using the direct crystallization technique from melt (Bridgman–Stockbarger technique). The polymer composites based on (Cu₆PS₅I)₁₋ₓ(Cu₇PS₆)ₓ mixed crystals were prepared. Electrical properties of composites were studied in the frequency range from 10⁻³...
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Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
2019
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| Цитувати: | Preparation and electrical properties of composites based on (Cu₆PS₅I)₁₋ₓ(Cu₇PS₆)ₓ mixed crystals / V.Yu. Izai, M.M. Luchynets, I.P. Studenyak, A.I. Pogodin, O.P. Kokhan, M. Rajňák, M. Timko, P. Kopčanský // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2019. — Т. 22, № 2. — С. 182-187. — Бібліогр.: 10 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1860480649012445184 |
|---|---|
| author | Izai, V.Yu. Luchynets, M.M. Studenyak, I.P. Pogodin, A.I. Kokhan, O.P. Rajňák, M. Timko, M. Kopčanský, P. |
| author_facet | Izai, V.Yu. Luchynets, M.M. Studenyak, I.P. Pogodin, A.I. Kokhan, O.P. Rajňák, M. Timko, M. Kopčanský, P. |
| citation_txt | Preparation and electrical properties of composites based on (Cu₆PS₅I)₁₋ₓ(Cu₇PS₆)ₓ mixed crystals / V.Yu. Izai, M.M. Luchynets, I.P. Studenyak, A.I. Pogodin, O.P. Kokhan, M. Rajňák, M. Timko, P. Kopčanský // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2019. — Т. 22, № 2. — С. 182-187. — Бібліогр.: 10 назв. — англ. |
| collection | DSpace DC |
| description | (Cu₆PS₅I)₁₋ₓ(Cu₇PS₆)ₓ mixed crystals were grown using the direct crystallization technique from melt (Bridgman–Stockbarger technique). The polymer composites based on (Cu₆PS₅I)₁₋ₓ(Cu₇PS₆)ₓ mixed crystals were prepared. Electrical properties of composites were studied in the frequency range from 10⁻³ Hz to 2·10⁶ Hz at room temperature. The parallel equivalent circuit with a double electric layer assumed at the electrode interface was applied to analyze the frequency dependences of electrical conductivity. It has been shown that the highest value of total electric conductivity is observed for the (Cu₆PS₅I)₀.₇₅(Cu₇PS₆)₀.₂₅-based composite. The further increase of Cu₇PS₆ content leads to the monotonically decreasing values of total electric conductivity. The ratio of total ionic to electronic components demonstrates the highest value for Cu₆PS₅I-based composite.
|
| first_indexed | 2026-03-23T19:03:31Z |
| format | Article |
| fulltext |
ISSN 1560-8034, 1605-6582 (On-line), SPQEO, 2019. V. 22, N 2. P. 182-187.
© 2019, V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine
182
Semiconductor physics
Preparation and electrical properties of composites
based on (Cu6PS5I)1–x(Cu7PS6)x mixed crystals
V.Yu. Izai1, M.M. Luchynets1, I.P. Studenyak1, A.I. Pogodin1, O.P. Kokhan1, M. Rajňák2, M. Timko2,
P. Kopčanský2
1
Uzhhorod National University, Faculty of Physics,
3, Narodna Sq., 88000 Uzhhorod, Ukraine
2
Institute of Experimental Physics, Slovak Academy of Sciences,
Watsonova 47, 040 01 Košice, Slovakia
E-mail: studenyak@dr.com
Abstract. (Cu6PS5I)1–x(Cu7PS6)x mixed crystals were grown using the direct crystallization
technique from melt (Bridgman–Stockbarger technique). The polymer composites based on
(Cu6PS5I)1–x(Cu7PS6)x mixed crystals were prepared. Electrical properties of composites
were studied in the frequency range from 10–3 Hz to 2·106 Hz at room temperature.
The parallel equivalent circuit with double electric layer assumed at the electrode interface
was applied to analyze the frequency dependences of electrical conductivity. It has
been shown that the highest value of total electric conductivity is observed for the
(Cu6PS5I)0.75(Cu7PS6)0.25-based composite. The further increase of Cu7PS6 content leads to
the monotonically decreasing values of total electric conductivity. The ratio of total ionic to
electronic components demonstrates the highest value for Cu6PS5I-based composite.
Keywords: mixed crystals, polymer composites, electrical conductivity, Nyquist plot,
compositional dependence.
https://doi.org/10.15407/spqeo22.02.182
PACS 78.40.Ha, 77.80.Bh
Manuscript received 04.05.19; revised version received 24.05.19; accepted for publication
19.06.19; published online 27.06.19.
1. Introduction
Mixed crystals in Cu6PS5I-Cu7PS6 system belong to the
argyrodite family of superionic conductors and
demonstrate high values of conductivity at room
temperature [1, 2]. The representatives of this family are
promising materials for applications in solid state ionics
as the materials for solid state batteries, supercapacitors
and electrochemical sensors. At room temperature, pure
Cu6РS5I and Cu7PS6 crystallize in the cubic crystal
system ( mF 34 and P213 space groups, respectively). The
most investigated in this family are Cu6РS5I crystals,
showing a high value of electric conductivity at room
temperature, comparable with the conductivity of the best
solid electrolytes [2]. At low temperatures, the Cu6РS5I
crystal undergoes two phase transitions (PTs), one of
them being the first-order superionic and ferroelastic PT
at TI = 144…169 K, while another is the second-order
structural PT at ТII = (269±2) K [3, 4].
The phase diagram of a quasi-binary Cu2S–P4S10
system was studied in Ref. [5]. Cu7PS6 compound is
formed with a large excess of S2–
anions and in a
simplified case its structure can be viewed as the Cu2S
matrix containing isolated [PS4]
3–
ions. In Cu7PS6, PT
is observed at 515 K from the high-temperature phase
with mF 34 symmetry to the low-temperature phase
with P213 symmetry. Calorimetric studies of Cu7PS6
showed no phase transitions within the temperature range
100...400 K [6]. Electrical properties of Cu7PS6 crystal
grown using direct crystallization were studied in
the frequency range 10…1010 Hz and temperature
interval 296…351 K in Ref. [7]. Two processes were
observed, which cause two conductivity dispersions and
a dielectric dispersion. At room temperature and at 1 kHz
frequency, the conductivity value is 1.77·10−3 S/m, while
at high frequency of 1 GHz the conductivity reaches
5 S/m.
SPQEO, 2019. V. 22, N 2. P. 182-187.
Izai V.Yu., Luchynets M.M., Studenyak I.P. et al. Preparation and electrical properties …
183
Argyrodite-based composites were studied in
several works (e.g., [8-10]). It was shown that for
Cu6PS5I-based composites with polyvinylacetate, the
electric conductivity value was 7.2·10–2 S/m at 106 Hz
[8], while for the composites of Cu6PS5I nanoparticles in
the 6CB liquid crystal it was increased up to 4.8·10–6 S/m
at 106 Hz [9]. The polymer composites based on
(Ag1–xCux)7GeS5I mixed crystals were recently prepared
from the above mentioned mixed crystals grown using
the Bridgman–Stockbarger method [10]. It should be
noted that substitution of Ag atoms with the Cu ones
leads to a sharp increase of electronic conductivity,
decrease of ionic conductivity as well as decrease of the
ratio of ionic to electronic conductivities [10].
In this paper, we report on the technology
development for new polymer composites based on
(Cu6PS5I)1–x(Cu7PS6)x superionic conductors with
argyrodite structure as well as their electrical properties.
2. Experimental
Cu6PS5I-Cu7PS6 superionic mixed crystals were obtained
by the solid state reaction between finely grinded and
mixed crystalline powders of pure Cu6PS5I and Cu7PS6
taken in corresponding proportions. The mixtures were
sintered at the temperature 1173 K for 120 h. As a result,
intense recrystallization of material was observed.
(Cu6PS5I)1–x(Cu7PS6)x mixed crystals were grown
using the direct crystallization technique from the melt
(Bridgman–Stockbarger method). Synthesis of
(Cu6PS5I)1–x(Cu7PS6)x compounds was performed by the
following procedure: heating at a rate of 50 K/h to
(673 ± 5) K, ageing at this temperature for 24 h, then
heating of the “hot” zone to (1330 ± 5) K and the “cold”
zone to (973 ± 5) K, ageing at this temperature for 72 h
and further heating of the melting zone up to
(1380 ± 5) K (50 K above the melting point) with 24-h
ageing. Seeding was performed for 48 h in the lower part
of the container. The crystallization front rate was
3 mm/day. The ampoule with the crystal was
subsequently annealed in the “cold” zone at (973±5) K
for 48 h.
XRD studies confirmed formation of continuous
series of (Cu6PS5I)1–x(Cu7PS6)x solid solutions. The
changes of lattice parameter follow the Vegard law.
Polymer composites based on (Cu6PS5I)1–x(Cu7PS6)x
mixed crystals were prepared from polycrystalline
powders previously finely grinded in agate mortar. The
obtained powders were ultrasonically dispersed in ethyl
acetate. The solution of EVA bonding polymer (ethylene-
vinyl-acetate copolymer) in ethyl acetate was added to
powder dispersion in amount of 1:9 by mass and further
dispersed in ultrasonic bath for 10 min. Thus, the
composite consisted of 10% of EVA binder and 90% of
superionic active material. The obtained mixture was
evaporated in air with continuous mixing to prevent
sedimentation and enhance homogeneity of particles and
dried at 60 °C for 24 h. Dry cake was grinded in agate
mortar and pressed in 8 mm in diameter hardened steel
mold at room temperature. The calculated pressure inside
the mold was around 7800 bar. As a result hard tablets
8 mm in diameter have been obtained. The electrodes
were spray deposited onto both disk faces using
Cramolin Graphite conductive paint based on colloidal
graphite. Thus, the obtained electrodes were expected to
demonstrate ion blocking effect at DC.
The impedance measurements were performed in
the wide frequency range from 10–3 Hz to 2·106 Hz with
no DC bias and 10 mV AC voltage, applied to the
samples. Agilent E4980A Precision LCR Meter was used
for 20…2·106 Hz frequency range. The measurements
within the frequency range 10–3…20 Hz were performed
using the lab-scale system. The analysis of obtained
frequency dependences was carried out in Scribner
ZView software.
3. Results and discussion
On the frequency dependence of electrical conductivity
for Cu7PS6-based composite, the single dispersion region
is observed (Fig. 1). It results in a broadened semicircle
in the Nyquist plot that cannot be fitted with one single
RC-circuit (Fig. 2a). The fitting can be performed using
the equivalent circuit (Fig. 2a) composed on the
assumption that Cu7PS6 have both ionic and electronic
(hole) components of conductivity. Thus, the low-
frequency part of the semicircle is defined generally by
electronic conductivity and capacitance of double layer
capacitor formed at the interface of irreversible electrode
and solid electrolyte. The high-frequency part is affected
by the ion transfer across the grain boundaries. The
frequency relaxation associated with bulk conductivity
and capacitance of the grains is expected in the high-
frequency region above 100 MHz and can’t be observed
on the plots under investigation. The capacity value
obtained for the double electric layer is too low, but it
can be explained by the poor contact area between
graphite and Cu7PS6 particles. This approach leads us to
comparable values of electronic and ionic component and
indicates the mixed character of conductivity in the
samples under investigations.
Fig. 1. Frequency dependences of the real part of electric
conductivity σ' for (Cu6PS5I)1–x(Cu7PS6)x-based polymer
composites with the various content of Cu7PS6: (1) x = 0,
(2) 0.25, (3) 0.5, (4) 0.75, (5) 1.
SPQEO, 2019. V. 22, N 2. P. 182-187.
Izai V.Yu., Luchynets M.M., Studenyak I.P. et al. Preparation and electrical properties …
184
Fig. 3. Nyquist plot for (Cu6PS5I)0.5(Cu7PS6)0.5-based polymer
composite and results of fitting made by using the parallel
equivalent circuit with a double electric layer assumed at the
electrode interface.
The similar analysis can be also performed for pure
Cu6PS5I-based composite, though the frequency behavior
of electric conductivity (Fig. 1) as well as the impedance
(Fig. 2b) is almost the same with only difference in
higher values of impedance and, thus, lower values of
electric conductivity and dielectric permittivity obtained.
On the frequency dependences of electric conductivity
of composites based on (Cu6PS5I)1–x(Cu7PS6)x mixed
crystals, one more dispersion in the low-frequency region
appears (Fig. 1). It results in a small additional semicircle
observed to the right in the low-frequency part of the
Fig. 4. Compositional dependences of electronic σe and total
(grains with grain boundaries) ionic σg+b components of electric
conductivity for (Cu6PS5I)1–x(Cu7PS6)x-based polymer
composites. Inset shows the compositional dependence of total
ionic to electronic components ratio σg+b/σe.
Nyquist plot after the main semicircle (Fig. 3). Taking
into account the low frequencies corresponding to the
observed semicircle, the latter is associated with a double
electric layer capacitance and electronic conductivity that
is comparatively large in the objects under investigation.
The equivalent circuit shown in Fig. 3 gives adequate
values of fitted parameters and, thus, was used for further
analysis. It should be emphasized that only the total ionic
conductivity value (including both grains and grain
boundaries) can be obtained from the analyzed plots due
to the upper frequency limit of the measurements.
Fig. 2. Nyquist plots for Cu7PS6-based polymer composite (a) and Cu6PS5I-based polymer composite (b) demonstrate results of
fitting the used parallel equivalent circuit with double electric layer assumed at the electrode interface.
SPQEO, 2019. V. 22, N 2. P. 182-187.
Izai V.Yu., Luchynets M.M., Studenyak I.P. et al. Preparation and electrical properties …
185
Anyway, this value is more important for practical
applications than internal conductivity of grains itself and
should be used in further comparison.
As can be seen from Fig. 1, the highest values of
total electric conductivity are observed for the
(Cu6PS5I)0.75(Cu7PS6)0.25 (it rises rapidly with increase of
Cu7PS6 content). The further increase of Cu7PS6 content
leads to the monotonically decreasing values of total
electric conductivity. While the frequency dependences
of electric conductivity are not sufficiently informative or
quantative analysis (only low-frequency plateau is
observed), our comparison was performed between
parameters obtained from fitting the used equivalent
circuit with a double electric layer assumed at the
electrode interface to hold the equal approach for all the
samples under investigation. The results of fitting are
given in Table, where Re, σe, Cdl, Rg+b, σg+b, Cgb are the
values of electronic resistance, electronic component of
conductivity, double electric layer capacitance, total ionic
resistance (assuming grains and grain boundaries
connected in series), total ionic conductivity and
capacitance of grain boundaries, respectively.
A sharp increase of electronic component of
conductivity at the concentration x = 0.25 of Cu7PS6 is
changed with its monotonous decrease together with
further increase of Cu7PS6 content (Fig. 4). Nevertheless,
the electronic conductivity of pure Cu7PS6 based
composite remains at higher level comparing to pure
Cu6PS5I based composite. From the other hand, the value
of total ionic conductivity decreases for composites
based on mixed crystals in comparison with those based
on pure Cu6PS5I and Cu7PS6. In spite of the fact that
the total ionic conductivity of Cu7PS6-based composite
(8.24·10–5 S/cm) is somewhat greater than that of
Cu6PS5I-based composite (6.45·10–5 S/cm), the ratio of
total ionic to electronic components demonstrates
the highest value for Cu6PS5I-based composite. A sharp
decrease of ionic component and increase of the
electronic one can be explained by the compositional
disordering effects usually observed in solid solutions.
Thus, the break of ionic conductivity channels and
enhanced overlapping of electron density functions may
occur due to compositional disordering in crystal
lattice resulting in domination of electronic com-
ponent of conductivity in composites based on
(Cu6PS5I)1–x(Cu7PS6)x mixed crystals. As a result, pure
Cu6PS5I and Cu7PS6 superionic composites remain the
best materials from the chosen series of mixed crystals
for possible electrochemical applications.
4. Conclusions
Cu6PS5I)1–x(Cu7PS6)x mixed crystals were grown using
the direct crystallization technique. Polymer composites
based on (Cu6PS5I)1–x(Cu7PS6)x mixed crystals were
prepared from the polycrystalline powders and consisted
of 10% of EVA (ethylene-vinyl-acetate copolymer)
binder and 90% of superionic active material. The
impedance measurements for (Cu6PS5I)1–x(Cu7PS6)x-
based composites were carried out in the wide frequency
range from 10–3 Hz to 2·106 Hz. The parallel equivalent
circuit with double electric layer assumed at the electrode
interface was applied to analyze the frequency
dependences of electrical conductivity. This approach
leads us to comparable values of electronic and ionic
components and indicates the mixed character of
conductivity in the samples under investigations.
The highest value of total electric conductivity is
observed for the (Cu6PS5I)0.75(Cu7PS6)0.25-based
composite (it rises rapidly with increase of Cu7PS6
content). The further increase of Cu7PS6 content leads to
the monotonically decreasing values of total electric
conductivity. The comparison was performed between
parameters obtained from fitting the used equivalent
circuit with double electric layer assumed at the electrode
interface.
In spite of the fact that the total ionic conductivity
of Cu7PS6-based composite (8.24·10–5 S/cm) is
somewhat higher than that of Cu6PS5I-based composite
(6.45·10–5 S/cm), the ratio of total ionic to electronic
components demonstrates the highest value for Cu6PS5I-
based composite. A sharp decrease of ionic component
and increase of the electronic can be explained by
compositional disordering effects usually observed in
solid solutions.
Table. Values of fitted parameters and conductivities for (Cu6PS5I)1–x(Cu7PS6)x-based polymer composites with various
content of Cu7PS6.
Composite
Re
(Ω)
σe
(S/cm)
Cdl
(F)
Rg+b
(Ω)
σg+b
(S/cm)
Cgb
(F)
Cu6PS5I 31020 2.70·10–5 7.72·10–11 12962 6.45·10–5 1.56·10–9
(Cu6PS5I)0.75(Cu7PS6)0.25 6163 1.58·10–4 1.82·10–5 87406 1.12·10–5 1.69·10–10
(Cu6PS5I)0.5(Cu7PS6)0.5 8920 9.70·10–5 1.28·10–6 47863 1.81·10–5 8.21·10–10
(Cu6PS5I)0.25(Cu7PS6)0.75 10110 7.62·10–5 1.31·10–6 97552 7.89·10–6 2.79·10–10
Cu7PS6 13648 6.56·10–5 5.51·10–11 10873 8.24·10–5 8.51·10–10
Note. Re – electronic resistance, σe – electronic component of conductivity, Cdl – double electric layer capacitance, Rg+b – total ionic
resistance (assuming grains and grain boundaries connected in series), σg+b – total ionic conductivity, Cgb – capacitance of grain
boundaries.
SPQEO, 2019. V. 22, N 2. P. 182-187.
Izai V.Yu., Luchynets M.M., Studenyak I.P. et al. Preparation and electrical properties …
186
Acknowledgement
This work was supported by the Slovak Academy of
Sciences, in the framework of projects VEGA 2/0016/17,
the Slovak Research and Development Agency under the
contract No. APVV-015-0453, EURONANOMED II
MAGBBRIS and M-ERA.NET 2 – FMF.
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Authors and CV
Ihor P. Studenyak, born in 1960,
defended his Dr. Sc. degree in Physics
and Mathematics in 2003 and became
full professor in 2004. Vice-rector for
research at the Uzhhorod National
University, Ukraine. Authored over
200 publications, 120 patents, 15
textbooks. The area of his scientific
interests includes physical properties of semiconductors,
ferroics and superionic conductors.
Artem I. Pogodin, born in 1988,
defended his PhD thesis in inorganic
chemistry in 2016. Senior researcher
at the Uzhhorod National University.
Authored over 35 articles and 25
patents. The area of his scientific
interests includes solid state
chemistry, crystal growth, and
materials science.
Oleksandr P. Kokhan, born in 1958,
defended his PhD thesis in inorganic
chemistry in 1996 and became docent
in 2002. Associate professor of
Inorganic Chemistry department at
the Uzhhorod National University.
Authored over 80 articles and 40
patents. The area of his scientific
interests includes inorganic chemistry, solid state
chemistry, crystal growth, materials science.
Vitaliy Yu. Izai, defended his PhD
thesis in Physics and Mathematics in
2013. Senior researcher at Uzhhorod
National University. Authored over 35
articles and 20 patents. The area of
scientific interests is electrical and
optical properties of semiconductors
and superionic conductors.
Mykhailo M. Luchynets, born in
1994. Currently he is PhD student of
the Uzhhorod National University on
Faculty of Physics. Authored 17
scientific publications and 2 patents.
The area of scientific interests is
electrical and optical properties of
superionic conductors.
SPQEO, 2019. V. 22, N 2. P. 182-187.
Izai V.Yu., Luchynets M.M., Studenyak I.P. et al. Preparation and electrical properties …
187
Michal Rajňák, defended his PhD
thesis in Physics of Condensed Matter
in 2015. Currently he is working as a
senior researcher at Institute of Expe-
rimental Physics, Slovak Academy of
Science. He focused on dielectric
properties of nanocomposite systems.
Milan Timko, PhD in solid state
physics. Senior researcher of Institute
of Experimental Physics, Slovak Aca-
demy of Science. Authored over 220
articles, 4 patents and 3 textbooks.
The area of his scientific interests
includes solid state physics, magnetic
fluids and their magnetic, dielectric
and hyperthermia properties.
Peter Kopčanský, Professor in solid
state physics. Director of Institute of
Experimental Physics, Slovak Acade-
my of Science. Authored over 250 ar-
ticles, 6 patents and 5 textbooks. The
area of his scientific interests includes
solid state physics, especially magne-
tism, transport properties in disor-
dered systems, magnetic fluids, their
magnetic and dielectric properties and
composite systems with liquid
crystals.
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| id | nasplib_isofts_kiev_ua-123456789-215467 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1560-8034 |
| language | English |
| last_indexed | 2026-03-23T19:03:31Z |
| publishDate | 2019 |
| publisher | Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України |
| record_format | dspace |
| spelling | Izai, V.Yu. Luchynets, M.M. Studenyak, I.P. Pogodin, A.I. Kokhan, O.P. Rajňák, M. Timko, M. Kopčanský, P. 2026-03-18T11:39:51Z 2019 Preparation and electrical properties of composites based on (Cu₆PS₅I)₁₋ₓ(Cu₇PS₆)ₓ mixed crystals / V.Yu. Izai, M.M. Luchynets, I.P. Studenyak, A.I. Pogodin, O.P. Kokhan, M. Rajňák, M. Timko, P. Kopčanský // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2019. — Т. 22, № 2. — С. 182-187. — Бібліогр.: 10 назв. — англ. 1560-8034 PACS: 78.40.Ha, 77.80.Bh https://nasplib.isofts.kiev.ua/handle/123456789/215467 https://doi.org/10.15407/spqeo22.02.182 (Cu₆PS₅I)₁₋ₓ(Cu₇PS₆)ₓ mixed crystals were grown using the direct crystallization technique from melt (Bridgman–Stockbarger technique). The polymer composites based on (Cu₆PS₅I)₁₋ₓ(Cu₇PS₆)ₓ mixed crystals were prepared. Electrical properties of composites were studied in the frequency range from 10⁻³ Hz to 2·10⁶ Hz at room temperature. The parallel equivalent circuit with a double electric layer assumed at the electrode interface was applied to analyze the frequency dependences of electrical conductivity. It has been shown that the highest value of total electric conductivity is observed for the (Cu₆PS₅I)₀.₇₅(Cu₇PS₆)₀.₂₅-based composite. The further increase of Cu₇PS₆ content leads to the monotonically decreasing values of total electric conductivity. The ratio of total ionic to electronic components demonstrates the highest value for Cu₆PS₅I-based composite. This work was supported by the Slovak Academy of Sciences, in the framework of projects VEGA 2/0016/17, the Slovak Research and Development Agency under the contract No. APVV-015-0453, EURONANOMED II MAGBBRIS and M-ERA.NET 2 – FMF. en Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України Semiconductor Physics Quantum Electronics & Optoelectronics Semiconductor physics Preparation and electrical properties of composites based on (Cu₆PS₅I)₁₋ₓ(Cu₇PS₆)ₓ mixed crystals Article published earlier |
| spellingShingle | Preparation and electrical properties of composites based on (Cu₆PS₅I)₁₋ₓ(Cu₇PS₆)ₓ mixed crystals Izai, V.Yu. Luchynets, M.M. Studenyak, I.P. Pogodin, A.I. Kokhan, O.P. Rajňák, M. Timko, M. Kopčanský, P. Semiconductor physics |
| title | Preparation and electrical properties of composites based on (Cu₆PS₅I)₁₋ₓ(Cu₇PS₆)ₓ mixed crystals |
| title_full | Preparation and electrical properties of composites based on (Cu₆PS₅I)₁₋ₓ(Cu₇PS₆)ₓ mixed crystals |
| title_fullStr | Preparation and electrical properties of composites based on (Cu₆PS₅I)₁₋ₓ(Cu₇PS₆)ₓ mixed crystals |
| title_full_unstemmed | Preparation and electrical properties of composites based on (Cu₆PS₅I)₁₋ₓ(Cu₇PS₆)ₓ mixed crystals |
| title_short | Preparation and electrical properties of composites based on (Cu₆PS₅I)₁₋ₓ(Cu₇PS₆)ₓ mixed crystals |
| title_sort | preparation and electrical properties of composites based on (cu₆ps₅i)₁₋ₓ(cu₇ps₆)ₓ mixed crystals |
| topic | Semiconductor physics |
| topic_facet | Semiconductor physics |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/215467 |
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