Suppression of SnS2 Secondary Phase on Cu2ZnSnS4 Solar Cells Using Multi-Metallic Stacked Nanolayers

Fang-I Lai; Jui-Fu Yang; Jia-En Li; Yu-Chao Hsu; Shou-Yi Kuo

doi:10.3390/nano13030432

Suppression of SnS₂ Secondary Phase on Cu₂ZnSnS₄ Solar Cells Using Multi-Metallic Stacked Nanolayers

Nanomaterials (Basel). 2023 Jan 20;13(3):432. doi: 10.3390/nano13030432.

Authors

Fang-I Lai¹, Jui-Fu Yang¹, Jia-En Li¹, Yu-Chao Hsu^{2

3}, Shou-Yi Kuo^{2

4}

Affiliations

¹ Department of Electrical Engineering Program C, Yuan-Ze University, 135 Yuan-Tung Road, Chung-Li 32003, Taiwan.
² Department of Urology, Chang Gung Memorial Hospital, Linkou, No. 5, Fuxing Street, Kwei-Shan, Taoyuan 333, Taiwan.
³ School of Medicine, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan, Taoyuan 333, Taiwan.
⁴ Department of Electronic Engineering, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan, Taoyuan 333, Taiwan.

Abstract

In Cu₂ZnSnS₄ (CZTS) solar cells, it is crucial to suppress the generation of and remove the SnS₂ secondary phase to improve the solar cell characteristics, as the SnS₂ secondary phase affects the barrier for carrier collection and diode characteristics of the device. In this study, the nano-metallic precursor was modified to effectively suppress the generation of the SnS₂ secondary phase on the surface and simultaneously improve the uniformity and quality of the thin film. The CZTS bifacial solar cells prepared via the proposed method exhibited significantly improved junction-rectifying characteristics, as the efficiency was improved to 1.59%. The proposed method to figurremove SnS₂ is effective, simple, and environmentally friendly.

Keywords: CZTS; bifacial solar cell; nano multi-metallic stacked.

Grants and funding

This research was funded by Chang Gung Memorial Hospital (BMRP 956) and the National Science Council (MOST 111-2112-M-182-001, MOST 110-2221-E-155-053-MY3).