Luminescent characterization of eu-doped lattices
In the present paper a comparative spectral study - steady state and time-resolved photoluminescence (PhL) and radioluminescence (RL) - of Eu-doped phosphors in different host lattices: BaFCl, Sr3(PO4)2, Y2O2S, Y2O3 is reported. Steady state and time-resoived (induced by X-ray tube, N2-Iaser and hig...
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| Дата: | 2001 |
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| Автори: | , , , , |
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| Мова: | Англійська |
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Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2001
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Репозитарії
Surface| _version_ | 1869291149935509504 |
|---|---|
| author | Ignatovych, M. Kelemen, A. Peto, A. Ogenko, V. Chuiko, O. |
| author_facet | Ignatovych, M. Kelemen, A. Peto, A. Ogenko, V. Chuiko, O. |
| author_institution_txt_mv | [
{
"author": "M. Ignatovych",
"institution": "Інститут хімії поверхні НАН України"
},
{
"author": "A. Kelemen",
"institution": "Institute for Isotope and Surface Chemistry"
},
{
"author": "A. Peto",
"institution": "Institute for Isotope and Surface Chemistry"
},
{
"author": "V. Ogenko",
"institution": "Інститут хімії поверхні НАН України"
},
{
"author": "O. Chuiko",
"institution": "Інститут хімії поверхні НАН України"
}
] |
| author_sort | Ignatovych, M. |
| baseUrl_str | |
| collection | OJS |
| datestamp_date | 2018-11-27T09:42:39Z |
| description | In the present paper a comparative spectral study - steady state and time-resolved photoluminescence (PhL) and radioluminescence (RL) - of Eu-doped phosphors in different host lattices: BaFCl, Sr3(PO4)2, Y2O2S, Y2O3 is reported. Steady state and time-resoived (induced by X-ray tube, N2-Iaser and high-energy accelerated electrons respectively) PhL and RL measurements were performed. Bright monoband and fine-structure line emissions in the blue-green and orange-red region were recorded in PhL and RL for all phosphors.
The spectroscopic investigation permits ode to deduce the following conclusions:
The spectral patterns, decay curves and life-times observed in both PhL and RL are basically the same for all phosphors. On these observations it was assumed that similar luminescent species are involved in the both PhL and RL processes namely: mono-species Eu2+ and Eu3+ and their clusters.
Strong host-lattice influence on the status of Eu in the samples under consideration reflected in the spectral pattern, life-time and quantum efficiency was revealed.
|
| first_indexed | 2025-09-24T17:44:39Z |
| format | Article |
| fulltext |
LUMII\{Е sс ЕlчT CttARA CTЕRIZATION oF Е u.D oPЕ,D
LATTIСЕs
М. tgnator,Усhl, A. KеlemеП2, A.Pеto2, V. ogenkol, and o. Chuikol
1 Iпsti tutе oJ^ Suфсе С hеmistry,. N аtionаl Асаdеmу of Sс i еnсе s'
2Irt'stitutе.f or',',iiii:''у''*'#;i,'r;ii;н"#жof Sсiеncеs,
Abstrасt есtгal studу - stеadу statе and timе.rеsolved
,n*",*,l|l.g::"Ё JfilJ ;il'',:fiirJiJ:;; iЬ- - Ьг в^u аopеd |hosphors in diffeгеnt
Ьost iattiсеs' BaFCl, 5,.iгoo),' v,o:l,.y,o.-i,'.йoпеd.-Stеadу statе anа timе-гesolvеd
(induсеd bу Х-raу tuье,.ш,-tasеr and high.еn.igf u."Ъt..utеd еlесtrons геspeсtivelу) PhL and
RL mеasurеm"n,, *",. p.Ъ,..a. вrigt't moйband and finе-struсturе linе еmissions in thе
bluе-gгееn und o,ung.-,;;;;;;;;:;;fu*o in PlrL and RL foг allphosphors.
Thе spесtrоsсoрiс invЪstigation pеrmits odе to dеduсе thе following оonclusions:
(i)Thеspесtгalpattегns,dесavсun,еs.uuo-tiг.-tl.n.'observеdinbothPhLandRLarе
basiсailу thе samе
'",!].lь".,г;i;; '
o: й* oь'.*ations it was assumеd that similar
luminеsсеnt spесiеs u,. iiuotТ.а in thе both PhL and RL proсessеs namе1у: mono-spесiеs Еu,-
""a
в".i,]"J,:Ж
;lH:::tiсе influеnсе on.thе status оf Еu in thе samplеs under сonsidеration
геflесtеd in thе sресtгal pattеrn, riг..'i*. and quantum еffrсiеnсy was геvеalеd'
lntroduсtion .'''..iaлr сtrosсopiс studiеs. Thе.....-Ъu,opium-dopеd
phosphoгs-",:^:::j:Т''::#3 }Т\'J..Eainеd bу thеiг uniquе
:al::;J}::';iJfi i"li.:J"#1".HёilHJ.iiч*i:":'"1-:":т*;lln::нж;;
геsеarсh suсh as . il nutu,. ы.i..t,oni..t,unsitions and luminеsсrnсе сеntrеs ii)mесhanism and
kinеtiсs of ехсitation, еnеrgу transfеr unа.п1i,",ion |,й''"'.'1r]..The sесond rеason is thеiг
ехtгеmеly important p,u"ii.ы apрliсations in.iiuJ."'".nt ligьting and in еnvironmеntal,
o",'"""ж':x;i*";T;iH.';-"1,;*"ч, litетaturе оt^l::::'.Т:::',-:?i'l:T:l;:::::::l
matегials is distinguish.Jl.ь..""iньution of G.. Blassе геsеarсh gгoup [1,5]. Howеver' onе сan
сonс.ludе that just ,h" ;;;i;;; iu",,ion, ot вu iuыn"sсеnсе . thе naturе of emission сеntrе,
time.сhaгaсtеristiсsandquantum.еffiсiеnсу.arеstillthеmosttоpiсalanddisсussеd[5,.
Rесеnt detailеd studie] i,iа."."а about thе сomplех struсturе of Еu luminеsсеnсе сеntгes
whiсh inсlude Еu-dimеrs, сlustегs and Еu.-o .';;;;;; t6l By timе-rеsolvеd and sitе.sеleсtivе
spесtгo sсopу sеvеral'yp.'- Ji" .еntrеs hа.vе, b ееn d i sсriminatеd [7].
Тhе goal of this papеr is thе соmparatr;;Ь;";"; кL invеsiigation of Еu inсoгporatеd
in diffеrеnt host.lattrсеsliй. ,tuау is aimеd at rеvеaling the sitе-struсturе (oxidation statе.
sуmmеtry) and kinеticЪiaraсtепstiсs of Еu-spесiеs, involvеd in PhL and RL proсrssеs.
]JU
)PЕD
huikor
::mе-resolvеd
:s in diffегеnt
:lmе-resolvеd
..еiу) PhL and
:ssions in thе
з
; -sions:
'_ and RL arе
:; :hat similaг
. -11I:. )pесlеs tru
r : эnsidеration
-. зalеd.
pс .:'rdiеs. Thе
tr :,..еir uniquе
E -rrinеsсеnсе
fu,::anism and
t, .::'icП is thеiг
] :. ::onmеntal,
: Еu-doped
ег, onе сaп
)ilon сeшrе'
: .'.ussеd [5].
'.: :.се cеntrеs
r.sеlесtivе
Еxpеrimental
IvIаtеriаI.g fouг saпrplеs of Еu-сontaining phosphoгs suсh as BaFCl:Еu,
Sг3(Poa)2:Еu, Y2o2S:Еu, Y2o3.Еu have bееn studiеd' Еuropium.dopеd polyсrystallinе
powdегs weге laboratory obtainеd by thе сonvеntional solid statе reaсtion' сonсrntration of Еu
nеaг 0.5 mo| Yo in all samplеs'
Foг thе invеstigation thе following tесhniquеs weге usеd:
| ' |-imе-rеsolvеd photoluminеsсеncе (PhD ,'pectтosсopу' Kinеtiс mеasurеmеnts wеге
pегfoгmеd on a spесtгosсopiс set.up with an ехсitation pulsе of N2 lasег (337 nm); half-width
of pulsе was еqual 8 ns; timе геsolution 2 ns.
2' Steаdу-stаtе rаdioluminesсеnсe (RL) spectra wеге mеasuгеd using eхсitation of Х-raу tubе
at 20 kV.
З' Time-resolvеd rаdioluminеsсеncе (RL). Ехcitation was induсеd by high-еnегgy
еleсtron pulsеs of linеar еlесtгon aссеlегator (LINAС) with - 2.6 ms duratiоn and
dosе, timе геsolutiоn 1ms.
Both PhL and RL mеasuгеmеnts wеге pегГoгmеd at гoom tempеraturе.
Rеsults and disсussion
Fig. la shows PhL speсtrum for BaFCl:Еu samplе' Fig' 2a displays thе same data for
YuozS:Еu phosphoг. In Fig 1b and 2b arе rеpгеsеntеd thе dесay сuгv'еs of thеsе two phosphoгs
геspесtivеly. Fig. 3 сontains RL spесtгa foг all phosphors invеstigatеd. Fig 4a-с геpresеnts thе
RL dесaу сuгvеs obtainеd undег high-еnеrgy (a МеV) еlесtron ехсitation,
-l-шliЕ|r,dtn
-.tрrfu'пcr1,dф'
Photolumlпоrgпсr d*rу ol BrFC|:Еu
(a ).1300 n.п)
г
сt.!{iФ
lrtggtirFol Trmе [rs]
Fig. l. Photoluminеsсеnсе spесtra of BaFCl:Еu (a) and dесay at }'=390 nm (D)
As it is sееn fгom thе pгеsеntеd ехpегimеntal data thе studiеd phosphoгs show:
a) monoband еmission PhL and RL @aFCl:Еu, Sr3(Poa)2:Еu, and Y2o2S:Еu);
b) fine-struсtuге linе еmission in PhL and RL in thе сasе of Yzoз:Еu.
It is impoгtant to notiсе that thе spесtгal shapеs геgistегеd in PhL and RL aге
praсtiсally thе samе for all invеstigatеd samplеs of a/ group. It was also obsеrvеd that for thеsе
(4 Мev)
-i00 Gу
aa
J
t
a
э
g
э
D
o
u
a
0
д
a
f
!,{
Ia
s
g
aс
э
t
RI
E
iI
Рtdtttrпitеtсшe spedlа d 8аIйЕu
thгее phоsрhoгs thе kinеtiс fеatuгеs . llio{lОе;tрoflеntial dесa-vs anсi lifе-тi,nе valuеs - аrе similaт
гor tьЬ samе samplе in time.гesоlvеd PhL and RL,
мlнtffi'}ItпolY'\*u PhфlЦ.riшfiш drсry оl Yp':fu
{аt i'410 nm)
l5o ?oJ
T mв [nt)
Е
l
_ 08
Ф
=901
a"
Е
I
m
tl
.: v,
Е
э
J
Fig.,
linе .
Y,oз
Fig"2'PhotoluminesсеnсеSpесtгumofYloз:Еu(a)anddесaуati:410nm(b)
Howеvег thе prеsеntеd spесtral сhаraсtегistiсs of thе studiеd phosphors rеvеal also а
сегtain differenсes. оirегеnt u.. ih" sресtral pattегns of timе.rеsolvеd PhL and stеadу statе RL
foг Yzol:Еu that will bе disсussеd fi.rпhег. Bеsidеs, as it is еvidеnt iгom Fig З RL intеnsitiеs
arе сonsidеrabty difГеrеni ior invеstigatеd Еu-dopеd рhosphors. A.s it сan bе sееn from thе
summarizing Тablе thе lЬ ti.., oгln. епtittirrg Еu Ъp..i.' aге also еssеntiallу diffегеnt -
ranging from nanosесonds to milliseсоnds.
FordisсussingthепaturеofluminеsсеntЕusресiеsгеsponsiЬlefoгPhrLandRLofthе
invеstigated pьospt,,o,, uir ti.," eхpегimеntal o*u n.,uu bе tatеn into оonsidеration' First oГ
all, attеntion should ь. р.ij'lЬ.-.г*t tьut thе obsеn,еd speсtral pattеrns and kinеtiс data of
еmitting spесiеs tbr pЬotoluminеsсеnсе and radioluminеscеnсе for thе samе samplе arе
basicallу thе same for most of invеstigаtеd phosрhoгs ехcеpt Yzoз.Bu. Thus thе numегous
litеratuгеоnoptiсalspесtrosсoр}'oг.u,oplun-,spесiеsсanbеusеdfoгassignmеntoГ
luminеsсеnt сеntrеs [1,5], . г-. ^.^^:^. ^.,-.l tЬр nяtrrre оf thе
At thе сonsidеrition of thе oxidatiоn Statе of Еu-spесiеs and thе naturе of thс
tгansitions connесtеd *i,ь tь. obsеn,еd ,p..i,.. *. havе dеtесted thе follorving. Мonoband
bluееmissionpеakrngu.звs.зsоnminPhLunакl-sресtraofBaFСl:Еuсanbеattributеdtо
4F65D>4F]transitionofmono-spесiеsоfЕu2+[8]Рositiоn.oflurninеsсrnсеbands,thеir
mono-eХрonеntial dесay and
-valuе
fоr this ,u,ipt. niЁеly сoin^сioе in PhL and RL sресtгa and
also with thе data рuйь.а foг thе,ingl..ny,iui phospiоr.of ]h." ''u-.
сhemiсal сompositiсln
[9]. Еmisston ,p.".*. ois,.(po.,),.в.iai.pruу, if" .1d^:Цft of thе luminеsсеnсе band and thе
сonsidегablу fastег еmission deсa1, as сomparеd to BaFCl'Еu,
ZЭ:'
il
: sltnilar
а 15фЕсiiBlJ
2. lФ0
.е
|А
c
.g
n00
!
t
I
t
!
Бг'0
, f U
F
i!
vy8vеlеnqth (nnr)
Fig. 3. Radioluminеsсеnс.е spесtгa оf Еu-dopеd phоsphors gеnегatеd by Х-гay eхсitation: sоlid
Чь;.io.l;Еu;
dashеd linе - SnРo;;ъ;.dottес l;;--;;Ь.;Ъu; dash-dottеd linе .
Rзdloiшiшсrcr dвqу o' в.Fсl Eu
(1r.3ф m)
o,a
gсc
i 0,"
a
.Е o,.
E
яq.J
у cr
E
зq'
q0
Rмцr*Е|Е фФl ol Yрl(ЕuJ
dl*7 ffi kaфil|ф t<., ol Y,ol(ru,
(r1l{в m)
;Г
I
;:l
"."j
'*l
;
!
I
I
E
i
a
Fig 4. Radioluminеsсеnсе dесay сuгvеs
497 nm (D) and at 626 nm (c)
of BaFCl:Еu at З90 nm (a); Y2o3:Еu
2ЗЗ
It was гepoгted that thе оlustегing of Еu2'in sеvеral host lattiсеs t'',as followеd with thе
сonsidегablе геj shift of еmission bаnd ItO, 11] thus it is vеry геasonaЬlе that сhangеs in thе
Еu'--spесiеs aggгegation status is геsponsiblе fог thеsе obsеп,ations' Еmission ol Yzoз Еu
lьo,pt,o, dispйуs ih.
'o*t
сompliсatЬd spесtгal pattегn' in timе.rеsolv^еd PhL it сonsists of
Ьonoьuno p"atЬа at 41O nm and linе finе struсturеd sресtrum in the 460-710 nm геgiоn (Fig,
2a) It should bе noticеd that the bluе band at 4lO nm disappеars in PhL spесtrum aftеr 1
miсrosесond dеlaу. Kinеtiс mеasuгеmеnts (sеe сuгvE 2b) revеalеd the fast dесaу of, this
еmission - evaluatеd life-timе is equal 41 ns' Тhis shoгt.living Еu spесies wеге not obsегvеd in
thе stеady statе of RL spесtrum (iее Fig. 3) AJso it was not dеtесtеd in thе timе-геsolved Rl,
as thе timе геsolution оf sеt-up usеd is in miсrosесonds rangе.
Thе diffегеnсеs of linЬ sрес1Ia in the PhL and stеadу statе RL of Yzoз.Еu desеrvеs
fuгthег attеntion' Rеd RL is геgistегеd mainly in thе 580-7l0 nm (sее fig 3) rvhilе in thе PhL
,p...*. ftnе.struсturеd linе ейission is obsегved also in the 460-560 пm (sее Fig 2a) Thе
si..t,al рattern disрlayеd in RL of Yzoз'Еu сlosеly rеsеmb1еs thе wеll.knorvn сhaгaсtегistrс
tinе е.ltilng tгansitions'Do.''Fo, 'Do.,'F',
,Do.,'Е, of Еuз- сеntгеs. In this сasе thе most
intеnsivе line in the кl- ,рЪ"t*. is dеtесtеd at 620 nm that сoгresponds to thе ,Do ., 'F,
еlесtгiсdipolеtгansitionofYzoз'Еuspeс.iеswiththеlowsitеsymmеtг}',
Tаblе
Spесtral сhaгaсteгistiсs of Еu-dopеd phosphors
sА]'РLЕ РltoToLUМIЬ{ЕsсЕNСЕ RADIOLLъ4INЕSсЕNCЕ LI-\4INЕsCЕNТ sРЕсIЕS
max (nm) lifе-timе lv{aх (nm) lifе-timе
BaFCl:Еu
Srз(Po+)::Еu
Yzo:S'Еu
Y:oз:Еu
t:=l0 2 рs
Ь=4000 рs
t2=6б'9 рs
385
420
585 *
410
510
580
620
700
6'3 рs
32 ns
67 ns
tr=41 ns
i90
425
б00+
510
580
оlo
710
5,7 цs
tr=8'9 рs
....::::.-);
-E,u- monospесlеs
Еu2-monospесiеs +
Еu2. pairs
-)+E,u- oг/anо
-
l+ 'E,u. сlustегs
tstl
Supегposition of Еu.-
monospесiеs of diffеге:
Ll-a r v sitе svmmеt
r*.y ь.м ,nгesolvеd band in thе 500 -750 nm геgton
** сannot bе mеasurеd with thе faсilitiеs usеd
**+ finе stгuсturе linе еmissiоn in thе rеgion 460-560 nm tеntativеly is attгibutеd to transittons
from thе фhеr ехсitеd lеvеls
,Dr.з'
Lеss сommon obsеrvatIon in PhL spесtral pattегn was, in paгtiсular, linе emissions bluе-shifted
;;Ы;i;о, r.".rj. iеntativеty wе attгibutе thеsе transitions from thе highеr ехitеd
lеvеls: 5D,.з to ?Fga' Pтсviouslу suсh transitions wеге rеgistеrеd in PhL sресtfa of Еuз- doped
rarе-еaгth oхyсhloгidеs in [9] and quite rесеntly in othег Еuз--aсtivated matегials [12.15]. So it
;;pъ;;' that for Yzoз:Еu pЪospьor thе pattегn in stеady-statе RL is сausеd bу thе most.
1'эЧ
: l,'.ith thе
-:s in thе
. \'.oз'Еu
^]ns1Sts oг
; rn (Fig
'.- зf}ег 1
:lГ thiS
::r'есi in
. rJ Rl"
- : : .г\'еS
. PШ,
.- Тhе
I : .li,!
. г-
intеnsivе tгansitions fгom 5D6 lеvеl of only on. llp: of Еuз*spесiеs whilе thе spесtrum oг timе-геsolved PhL inсludes also tгansitions {iоm thе highег ехсitеd lеvеls - ,Dr-з of sеvегal types ofЕuз*spесiеs,
Алalуzing thе spесtгal pattern of Fuз'еspесiallу in PhL it sееms that in ouг сasе it iscausеd by thе suрегposition. of sеvеral Еu3- spесiеs.oг аirе.еnt si* ,i.'.'.y. Additional pгoofof thrs supposition сan bе obtainеd in сompliсatеd luminеsсеnсe dесay for diffеrеntwavеlеngths that rеvеals thе prеsеnсе of еmitting spесiеs with сonsiJегаbly diffеrеnt life-timеs(sее Тablе)'
Тhеsе data ailow to сonсludе thе followins:
i.For thе same phosphoг thе spесtгal pattегns, dеБay сu.uеs and life-times obsеrvеd in thе bоthPhL and RL aге basiсally thе samе foi all invеstigatЬd phospho''. on.iь"," obsеrvations it wasassumеd that similar luminеsсеnt
'speсies
arе involvеd in thе both PhL and RL pгoсеssеsnamеly: mono-spесiеs Еu2* and Еuз- and thеir сlustегs'
ii. Тhe statе of еuгopium, dopеd in thе diffеrеnt host-lattiсеs, whiсh is геsеmblеd in theiгspеctral and kinеtiс сhaгactегistiсs, is substantiallу diffегеnt.
It is impoпant to notiсe that thе diffегеnt statе of Еu speсiеs influenсеd by thе hostlattiсe сausеs thе diffеrеnt еmitting еffiсienсy in RL of thе phosphoгs invеstigatеd (Fig' 3)
Aсknowlеdgements
This study was pеrfoгmеd in thе Ггamе of thе Agrееmеnt foг sсlеntifiс сollaborationbеtwееn thе Aсadеmiеs of Sсiеnсеs оf Ukгainе and Нunlary and wаs also in paгt finanсially
s.uppoгtеd by thе Hungaгian Sсiеnсе Foundation (oТKA N; T 02601О). Spесial thanks arеdue to thе LPR-4 elесtron aссеlегatoг staff'
Rеfеrеnсеs
l. Blassе G' and GraЬmaiег B.С. Luminеsсеnt Мatеrials // Spгinglег Vеrlag, Bеrlin, 1994'2 Gurviсh A М , lv{yakhova М G ' Rudigеr J., and kaй.o'a v.P Phosphoгs foгconvеntional and соmputеd radiogгaрhy i/ NuсI. Тгaсks Radiat. Меas'- 1993. - У.2,I' -P 29-33.
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| id | oai:ojs.pkp.sfu.ca:article-62 |
| institution | Surface |
| keywords_txt_mv | keywords |
| language | English |
| last_indexed | 2025-09-24T17:44:39Z |
| publishDate | 2001 |
| publisher | Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine |
| record_format | ojs |
| resource_txt_mv | surfacezbircomua/9c/b3bf3612bdef2f4e94a889a4f188a59c.pdf |
| spelling | oai:ojs.pkp.sfu.ca:article-622018-11-27T09:42:39Z Luminescent characterization of eu-doped lattices Luminescent characterization of eu-doped lattices Luminescent characterization of eu-doped lattices Ignatovych, M. Kelemen, A. Peto, A. Ogenko, V. Chuiko, O. In the present paper a comparative spectral study - steady state and time-resolved photoluminescence (PhL) and radioluminescence (RL) - of Eu-doped phosphors in different host lattices: BaFCl, Sr3(PO4)2, Y2O2S, Y2O3 is reported. Steady state and time-resoived (induced by X-ray tube, N2-Iaser and high-energy accelerated electrons respectively) PhL and RL measurements were performed. Bright monoband and fine-structure line emissions in the blue-green and orange-red region were recorded in PhL and RL for all phosphors. The spectroscopic investigation permits ode to deduce the following conclusions: The spectral patterns, decay curves and life-times observed in both PhL and RL are basically the same for all phosphors. On these observations it was assumed that similar luminescent species are involved in the both PhL and RL processes namely: mono-species Eu2+ and Eu3+ and their clusters. Strong host-lattice influence on the status of Eu in the samples under consideration reflected in the spectral pattern, life-time and quantum efficiency was revealed. In the present paper a comparative spectral study - steady state and time-resolved photoluminescence (PhL) and radioluminescence (RL) - of Eu-doped phosphors in different host lattices: BaFCl, Sr3(PO4)2, Y2O2S, Y2O3 is reported. Steady state and time-resoived (induced by X-ray tube, N2-Iaser and high-energy accelerated electrons respectively) PhL and RL measurements were performed. Bright monoband and fine-structure line emissions in the blue-green and orange-red region were recorded in PhL and RL for all phosphors. The spectroscopic investigation permits ode to deduce the following conclusions: The spectral patterns, decay curves and life-times observed in both PhL and RL are basically the same for all phosphors. On these observations it was assumed that similar luminescent species are involved in the both PhL and RL processes namely: mono-species Eu2+ and Eu3+ and their clusters. Strong host-lattice influence on the status of Eu in the samples under consideration reflected in the spectral pattern, life-time and quantum efficiency was revealed. In the present paper a comparative spectral study - steady state and time-resolved photoluminescence (PhL) and radioluminescence (RL) - of Eu-doped phosphors in different host lattices: BaFCl, Sr3(PO4)2, Y2O2S, Y2O3 is reported. Steady state and time-resoived (induced by X-ray tube, N2-Iaser and high-energy accelerated electrons respectively) PhL and RL measurements were performed. Bright monoband and fine-structure line emissions in the blue-green and orange-red region were recorded in PhL and RL for all phosphors. The spectroscopic investigation permits ode to deduce the following conclusions: The spectral patterns, decay curves and life-times observed in both PhL and RL are basically the same for all phosphors. On these observations it was assumed that similar luminescent species are involved in the both PhL and RL processes namely: mono-species Eu2+ and Eu3+ and their clusters. Strong host-lattice influence on the status of Eu in the samples under consideration reflected in the spectral pattern, life-time and quantum efficiency was revealed. Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine 2001-06-10 Article Article application/pdf https://surfacezbir.com.ua/index.php/surface/article/view/62 Surface; No. 4-6 (2001): Chemistry, Physics and Technology of Surface; 230-236 Поверхность; № 4-6 (2001): Химия, физика и технология поверхности; 230-236 Поверхня; № 4-6 (2001): Хімія, фізика та технологія поверхні; 230-236 3154-8091 3154-8083 en https://surfacezbir.com.ua/index.php/surface/article/view/62/61 Авторське право (c) 2001 M. Ignatovych, A. Kelemen, A. Peto, V. Ogenko, A. Chuiko |
| spellingShingle | Ignatovych, M. Kelemen, A. Peto, A. Ogenko, V. Chuiko, O. Luminescent characterization of eu-doped lattices |
| title | Luminescent characterization of eu-doped lattices |
| title_alt | Luminescent characterization of eu-doped lattices Luminescent characterization of eu-doped lattices |
| title_full | Luminescent characterization of eu-doped lattices |
| title_fullStr | Luminescent characterization of eu-doped lattices |
| title_full_unstemmed | Luminescent characterization of eu-doped lattices |
| title_short | Luminescent characterization of eu-doped lattices |
| title_sort | luminescent characterization of eu-doped lattices |
| url | https://surfacezbir.com.ua/index.php/surface/article/view/62 |
| work_keys_str_mv | AT ignatovychm luminescentcharacterizationofeudopedlattices AT kelemena luminescentcharacterizationofeudopedlattices AT petoa luminescentcharacterizationofeudopedlattices AT ogenkov luminescentcharacterizationofeudopedlattices AT chuikoo luminescentcharacterizationofeudopedlattices |