Effect of the Copper Content on the Kinetics of the Microwave Photoconductivity of CIGS Solid Solutions
- Authors: Novikov G.F.1,2, Rabenok E.V.1, Orishina P.S.1,2, Gapanovich M.V.1, Odin I.N.2
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Affiliations:
- Institute of Problems of Chemical Physics, Russian Academy of Sciences
- Moscow State University
- Issue: Vol 53, No 3 (2019)
- Pages: 304-309
- Section: Electronic Properties of Semiconductors
- URL: https://journals.rcsi.science/1063-7826/article/view/205822
- DOI: https://doi.org/10.1134/S106378261903014X
- ID: 205822
Cite item
Abstract
The kinetics of the photoresponse of microwave photoconductivity (9 GHz, TE101-type cavity) on excitation by laser light pulses with a wavelength of 337 nm and a duration of 8 ns in copper-deficient Cu1 –x(In0.7Ga0.3)Se2 (CIGS) (0 < x ≤ 0.4) solid solutions with the chalcopyrite structure is investigated in a wide light intensity range. With an increase in the laser radiation density to ~5 × 1014 photon/cm2 per pulse, the photoresponse acquires, along with the previously revealed skin effect, the effect of the filling of traps created by VCu vacancies and Cu+2 · VCu defect associates, the concentration of which increases with a decrease in x in the CIGS formula.
About the authors
G. F. Novikov
Institute of Problems of Chemical Physics, Russian Academy of Sciences; Moscow State University
Author for correspondence.
Email: gfnovikov@gmail.com
Russian Federation, Chernogolovka, Moscow oblast, 142432; Moscow, 119991
E. V. Rabenok
Institute of Problems of Chemical Physics, Russian Academy of Sciences
Email: gfnovikov@gmail.com
Russian Federation, Chernogolovka, Moscow oblast, 142432
P. S. Orishina
Institute of Problems of Chemical Physics, Russian Academy of Sciences; Moscow State University
Email: gfnovikov@gmail.com
Russian Federation, Chernogolovka, Moscow oblast, 142432; Moscow, 119991
M. V. Gapanovich
Institute of Problems of Chemical Physics, Russian Academy of Sciences
Email: gfnovikov@gmail.com
Russian Federation, Chernogolovka, Moscow oblast, 142432
I. N. Odin
Moscow State University
Email: gfnovikov@gmail.com
Russian Federation, Moscow, 119991