Optical properties of GaSe semiconducting crystals intercalated by CdTe nanoparticles

• Published in: Semiconductor Physics Quantum Electronics & Optoelectronics
• Date: 2009
• Main Authors: Khalavk, Y.B., Shcherbak, L.P., Pyrlya, M.M., Boledzyuk, V.B., Kovalyuk, Z.D.
• Format: Article
• Language: English
• Published: Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України 2009
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/118866
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Optical properties of GaSe semiconducting crystals
 intercalated by CdTe nanoparticles / Y.B. Khalavka, L.P. Shcherbak, M.M. Pyrlya, V.B. Boledzyuk and Z.D. Kovalyuk // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2009. — Т. 12, № 3. — С. 224-226. — Бібліогр.: 9 назв. — англ.

The transmission spectra of GaSe crystals intercalated by CdTe nanoparticles
 (NPs) from aqueous colloidal solutions were investigated at 77 K in the range of GaSe
 excitonic absorption. Solutions of two types – yellow (with 1-2.5 nm NPs) and orange
 (with 2.5-3.5 nm NPs) – were used for the experiments. Essential GaSe optical density
 intensity growth in proportion to exposition time was observed after intercalation from
 yellow solutions up to 50 days. While the exciton peak position (near 2.1 eV) coincides
 both in “pure” GaSe and GaSe(CdTe) after intercalation from yellow solution, the
 shortwave shift is observed for GaSe(CdTe) intercalated from the orange solutions. The
 results are discussed in assumption of strain effect presence.