Email this article Defect Structure and Photogenerated Carrier Loss Processes in Cu1 –x(In0.7Ga0.3)Se2 (0 ≤ x ≤ 0.30) Chalcopyrite Solid Solutions
- Authors: Gapanovich M.V.1, Odin I.N.2, Rabenok E.V.1, Orishina P.S.2, Novikov G.F.1,2
-
Affiliations:
- Institute of Problems of Chemical Physics, Russian Academy of Sciences
- Moscow State University
- Issue: Vol 55, No 7 (2019)
- Pages: 648-652
- Section: Article
- URL: https://journal-vniispk.ru/0020-1685/article/view/158718
- DOI: https://doi.org/10.1134/S0020168519070057
- ID: 158718
Cite item
Open Access
Access granted
Subscription Access
Abstract
Cu1 –x(In0.7Ga0.3)Se2 (0 ≤ x ≤ 0.30) copper-deficient solid solutions with the chalcopyrite structure have been synthesized and their unit-cell parameters have been determined as functions of composition. Their 78-K cathodoluminescence spectra show a band centered at 1.13 eV, which is most likely due to Cu2+ ⋅ VCu defect associates. Microwave photoconductivity data demonstrate that the defect associates act as electron traps, considerably reducing the lifetime of photogenerated current carriers.
About the authors
M. V. Gapanovich
Institute of Problems of Chemical Physics, Russian Academy of Sciences
Email: i.n.odin@mail.ru
Russian Federation, pr. Akademika Semenova 1, Chernogolovka, Moscow oblast, 142432
I. N. Odin
Moscow State University
Author for correspondence.
Email: i.n.odin@mail.ru
Russian Federation, Moscow, 119991
E. V. Rabenok
Institute of Problems of Chemical Physics, Russian Academy of Sciences
Email: i.n.odin@mail.ru
Russian Federation, pr. Akademika Semenova 1, Chernogolovka, Moscow oblast, 142432
P. S. Orishina
Moscow State University
Email: i.n.odin@mail.ru
Russian Federation, Moscow, 119991
G. F. Novikov
Institute of Problems of Chemical Physics, Russian Academy of Sciences; Moscow State University
Email: i.n.odin@mail.ru
Russian Federation, pr. Akademika Semenova 1, Chernogolovka, Moscow oblast, 142432; Moscow, 119991
Supplementary files
