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Flexible Cu2ZnSn(S,Se)4 solar cells with over 10% efficiency and methods of enlarging the cell area

Title
Flexible Cu2ZnSn(S,Se)4 solar cells with over 10% efficiency and methods of enlarging the cell area
Authors
Yang, Kee-JeongKim, SammiKim, Se-YunAhn, KwangseokSon, Dae-HoKim, Seung-HyunLee, Sang-JuKim, Young-illPark, Si-NaeSung, Shi-JoonKim, Dae-HwanEnkhbat, TemujinKim, JunHoJeon, Chan-WookKang, Jin-Kyu
DGIST Authors
Yang, Kee-Jeong; Son, Dae-Ho; Lee, Sang-Ju; Sung, Shi-JoonKim, Dae-HwanKang, Jin-Kyu
Issue Date
2019-07
Citation
Nature Communications, 10(1)
Type
Article
Article Type
Article
Keywords
EARTH-ABUNDANTZN-SNKESTERITE CU2ZNSNS4LOW-COSTALLOYSFILMS
ISSN
2041-1723
Abstract
For kesterite copper zinc tin sulfide/selenide (CZTSSe) solar cells to enter the market, in addition to efficiency improvements, the technological capability to produce flexible and large-area modules with homogeneous properties is necessary. Here, we report a greater than 10% efficiency for a cell area of approximately 0.5 cm2 and a greater than 8% efficiency for a cell area larger than 2 cm2 of certified flexible CZTSSe solar cells. By designing a thin and multi-layered precursor structure, the formation of defects and defect clusters, particularly tin-related donor defects, is controlled, and the open circuit voltage value is enhanced. Using statistical analysis, we verify that the cell-to-cell and within-cell uniformity characteristics are improved. This study reports the highest efficiency so far for flexible CZTSSe solar cells with small and large areas. These results also present methods for improving the efficiency and enlarging the cell area. © 2019, The Author(s).
URI
http://hdl.handle.net/20.500.11750/10294
DOI
10.1038/s41467-019-10890-x
Publisher
Nature Publishing Group
Related Researcher
  • Author Sung, Shi-Joon  
  • Research Interests Compound Semiconductor Materials & Processes
Files:
Collection:
Division of Energy Technology1. Journal Articles


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