硫系化合物
带隙
化学浴沉积
材料科学
热液循环
太阳能电池
碳纤维
沉积(地质)
纳米技术
能量转换效率
光电子学
制作
化学工程
复合材料
医学
古生物学
替代医学
病理
沉积物
复合数
工程类
生物
作者
Peng Tang,Zi-Heng Huang,Y. C. Chen,Hu Li,Liquan Yao,Hui Li,Limei Lin,Jin‐Rui Cai,Yan Zhan,Dong Wei,Shuiyuan Chen,Daqin Chen,Guilin Chen
标识
DOI:10.1016/j.cej.2023.146722
摘要
In recent years, significant progress has been made in the fabrication of sulfoselenide Sb2(S,Se)3 solar cells using a widely adopted hydrothermal method. However, the record efficiency is still far behind the theoretical values partly due to an unfavorable spatial bandgap distribution, which is induced by the complicated chalcogenide growth kinetics of the hydrothermal synthesis. Herein, a novel solution growth method, called Injection Chemical Bath Deposition (ICBD), is developed to prepare Sb2(S,Se)3 alloys for the first time. With this open CBD process, the selenium (Se) source is facilely incorporated during intermediate stages of reaction, and then successfully constructing a V-shaped bandgap via carefully tailoring the vertical gradients in chemical constituents, which synergistically enhances light absorption and carrier separation in the Sb2(S,Se)3 absorber. As a result, the solar cell with a full-inorganic FTO/CdS/Sb2(S,Se)3/Carbon structure achieves an impressive conversion efficiency of 7.63 %, which is among the highest efficiency of carbon-based Sb2(S,Se)3 solar cells based on CBD method. This study demonstrates a flexible strategy for manipulating the gradient band gap for highly efficient Sb2(S,Se)3 solar cells.
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