Red-blue effect in Cu(In,Ga)Se-2-based devices revisited
Igalson, M; Urbaniak, A; Zabierowski, P; Abdelmaksoud, Heba; Buffiere, M; Barreau, N; Spiering, S;
Abstract
The controversial issue of a source for the fill factor losses in Cu(In,Ga)Se2-based solar cells observed under red light is discussed. Experimental evidence is presented that removal of the fill factor loss by blue light is accompanied by a decrease in capacitance. Similar kinetics for both effects are observed. This effect is demonstrated not only on CdS-buffered devices but also on Zn(O,S)- and In2S3-buffered cells. The explanation, supported by simulations, is based on a model of a reduction of the p + layer by holes photogenerated in the buffer. This effect might be differentiated from the effect of a photosensitive secondary barrier in the buffer-window part of the junction by a sign of the capacitance change under blue light. © 2012 Elsevier B.V.
Other data
| Title | Red-blue effect in Cu(In,Ga)Se-2-based devices revisited | Authors | Igalson, M; Urbaniak, A; Zabierowski, P; Abdelmaksoud, Heba ; Buffiere, M; Barreau, N; Spiering, S | Keywords | CIGS;Solar cells;Fill factor;Capacitance;Alternative buffers;ZNO/CDS/CU(IN,GA)SE-2 SOLAR-CELLS;FILL FACTOR;PERFORMANCE | Issue Date | 2013 | Publisher | ELSEVIER SCIENCE SA | Journal | Thin Solid Films | Volume | 535 | Start page | 302 | End page | 306 | ISSN | 0040-6090 | DOI | 10.1016/j.tsf.2012.11.040 | Scopus ID | 2-s2.0-84878182020 | Web of science ID | WOS:000318973600067 |
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