Fabrication of Sb2S3 solar cells by close space sublimation and enhancing the efficiency via co-selenization. (May 2022)

• Record Type: Journal Article
• Authors: Xie, Yue; Li, Kelin; Li, Xiuling; Gao, Fengying; Xiong, Xiaoyong; Zeng, Guanggeng; Li, Bing
• Is Part Of: Materials science in semiconductor processing. Volume 142(2022)
• Publication Date: 2022-05
• Subjects: Solar cell -- Sb2S3 -- CSS -- Co-sublimation -- Co-selenization; Semiconductors -- Periodicals; Integrated circuits -- Materials -- Periodicals; Semiconducteurs -- Périodiques; Circuits intégrés -- Matériaux -- Périodiques; Electronic journals; 621.38152
• DOI: 10.1016/j.mssp.2022.106451
• Languages: English
• ISSNs: 1369-8001

Abstract

Abstract: As a new-type absorber material, antimony sulfide (Sb2 S3 ) possesses the advantages of earth-abundant elemental contents, low-toxic constituents, appropriate photoelectric properties, and unique one-dimensional crystal structure. We utilized the close space sublimation technique to deposit high-quality Sb2 S3 thin-film with ( hk 1)-preferred orientation by controlling source temperature. Then, Sb2 S3 thin film solar cells with the superstrate structure of FTO/CdS/Sb2 S3 /Au were fabricated, achieving a conversion efficiency of 2.86%. To further enhance efficiency, co-selenization process was employed in the Sb2 S3 thin films by co-sublimation, which improve the crystallinity of films, increase grain size and form stronger ( hk 1)-preferred orientation. In addition, co-selenization process can adjust band gap value and enhance junction quality. By these approaches, we enhanced the short circuit current density (Jsc) of Sb2 S3 solar cell efficiently. The Sb2 S3 solar cell fabricated by CSS achieved an efficiency of 4.45% using co-selenization process. These methods can be applied to other chalcogenides thin-film solar cells, providing a practical way for the device performance improvement. Highlights: Close space sublimation was employed to prepar Sb2 S3 thin film. Sb2 S3 underwent the co-selenization process was synthesized by co-sublimation for the first time. Sb2 S3 thin film solar cell obtained the efficiency of 2.86% by controlling the source temperature. Se–Sb2 S3 soar cell fabricated by CSS achieved the efficiency of 4.45%, obtained an enhancement of 55.6%.