Electrodeposition of single phase CuInSe2 for solar energy harvesting: Role of different acidic additives

JOURNAL OF ALLOYS AND COMPOUNDS

卷:591

Article

Sun, Juan¹  Batabyal, Sudip K.²  Tran, Phong D.²  Wong, Lydia H.¹ 

[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

[2] Nanyang Technol Univ, Energy Res Inst NTU ERI N, Singapore 639798, Singapore

关键词: Thin film solar cells;    Single phase;    Electrodeposition;    Cu-complex;    CIGS;   

DOI  :  10.1016/j.jallcom.2013.12.178

来源: Elsevier

【 摘 要 】

Single phase CuInSe2 (CIS) absorber material is required for producing high quality thin film solar cells, as the presence of impurity Cu2-xSe leads to short circuit of the cells. Traditionally, the deposition of single phase CIS requires the use of a suitable chelating agent to shift the Cu2+/Cu redox couple towards the redox potential of the In3+/In couple, and also an acid to adjust the pH of deposition bath around 2. We propose a novel idea of using suitable acids that could concurrently also serve as the chelating agent. Oxalic acid, acetic acid and hydrochloric acid were investigated on their ability to serve this dual function. We found that oxalic acid is the most promising additive because the CIS film deposited was densest and yielded the highest photocurrent. (C) 2013 Elsevier B.V. All rights reserved.

【 授权许可】

Free