Highly efficient and stable planar heterojunction solar cell based on sputtered and post-selenized Sb2Se3 thin film

Rong Tang, Zhuang-Hao Zheng, Zheng-Hua Su, Xue-Jin Li, Ya-Dong Wei, Xiang-Hua Zhang, Yong-Qing Fu, Jing Ting Luo, Ping Fan, Guang-Xing Liang

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69 Citations (Scopus)
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Abstract

Antimony selenide (Sb2Se3) is regarded as one of the key alternative absorber materials for conventional thin film solar cells due to its excellent optical and electrical properties. Here, we proposed a Sb2Sethin film solar cell fabricated using a two-step process magnetron sputtering followed by a post-selenization treatment, which enabled us to optimize the best quality of both the Sb2Sethin film and the Sb2Se3/CdS heterojunction interface. By tuning the selenization parameters, a Sb2Sethin film solar cell with high efficiency of 6.06% was achieved, the highest reported power conversion efficiency of sputtered Sb2Seplanar heterojunction solar cells. Moreover, our device presented an outstanding open circuit voltage (VOC) of 494 mV which is superior to those reported Sb2Sesolar cells. State and density of defects showed that proper selenization temperature could effectively passivate deep defects for the films and thus improve the device performance.
Original languageEnglish
Article number103929
JournalNano Energy
Volume64
Early online date26 Jul 2019
DOIs
Publication statusPublished - 1 Oct 2019

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