Title :
Improved FF of CIGS thin-film mini-modules with Zn(O,S,OH)x buffer by post-depostion light soaking
Author :
Kushiya, Katsumi ; Tachiyuki, Muneyori ; Kase, Takahisa ; Nagoya, Yoshinori ; Miura, Tadayuki ; Okumura, Daisuke ; Satoh, Masao ; Sugiyama, Lchirou ; Yamase, Osamu
Author_Institution :
Central RD Lab., Showa Shell Sekiyu K.K., Kanagawa, Japan
fDate :
29 Sep-3 Oct 1997
Abstract :
In order to explain the observations on the post-deposition light soaking and understand this unique and valuable effect, a model is proposed and confirmed to work well. Based on the model, released H2O molecules through the dehydration of Zn(OH)2 in the Zn(O,S,OH)x buffer during the light soaking is considered as a major player to affect the form factor (FF). The most striking result in this study is the post-deposition light soaking effect can be controlled from reversible to irreversible by adjusting the light soaking conditions. Approach to reduce the Zn(OH)2 concentration in the buffer contributes to make a better p-n heterojunction and improve the yield
Keywords :
copper compounds; gallium compounds; indium compounds; p-n heterojunctions; semiconductor device testing; semiconductor thin films; solar cell arrays; CIGS thin-film solar cells; CuInGaSe2; Zn(O,S,OH)x buffer; Zn(OH)2 concentration; form factor improvement; light soaking conditions; mini-modules; p-n heterojunction; post-depostion light soaking; yield improvement; Annealing; Buffer storage; Circuit simulation; Degradation; Humidity; Sun; Testing; Time measurement; Transistors; Zinc oxide;
Conference_Titel :
Photovoltaic Specialists Conference, 1997., Conference Record of the Twenty-Sixth IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-3767-0
DOI :
10.1109/PVSC.1997.654094
