A simple chemical route for composition graded Cu(In,Ga)S2 thin film solar cells: Multi-stage paste coating

Se Jin Park, Hee Sang An, Ji Eun Kim, Hyo Sang Jeon, Sam S. Yoon, Yun Jeong Hwang, Jihyun Kim, Dong Wook Kim, Byoung Koun Min

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In order to realize the modulation of band-gap profile in low-cost and printable CuInxGa1-xS2 thin-film solar cells, a simple chemical route, namely a multi-stage paste coating method, was developed. In particular, with this method, multiple coatings with two precursor solution pastes with different compositions were applied. Elemental analysis techniques confirmed the formation of three different graded Ga distributions (front, back, and front-and-back gradient) throughout the absorber films depending on the coating sequence with two different pastes. The back gradient cell showed the largest power conversion efficiency of 7.29%, which was almost two times larger than those of the non-graded cells.

Original languageEnglish
Pages (from-to)103439-103444
Number of pages6
JournalRSC Advances
Volume5
Issue number125
DOIs
Publication statusPublished - 2015 Nov 26

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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    Park, S. J., An, H. S., Kim, J. E., Jeon, H. S., Yoon, S. S., Hwang, Y. J., Kim, J., Kim, D. W., & Min, B. K. (2015). A simple chemical route for composition graded Cu(In,Ga)S2 thin film solar cells: Multi-stage paste coating. RSC Advances, 5(125), 103439-103444. https://doi.org/10.1039/c5ra20751g