Fabricating over 7%-efficient Sb2(S,Se)3 thin-film solar cells by vapor transport deposition using Sb2Se3 and Sb2S3 mixed powders as the evaporation source
Fabricating over 7%-efficient Sb2(S,Se)3 thin-film solar cells by vapor transport deposition using Sb2Se3 and Sb2S3 mixed powders as the evaporation source
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制造%20over%207%-效率%20Sb-2(S,Se)(3)%20薄膜%20太阳能%20细胞%20by%20蒸气%20运输%20沉积%20使用%20Sb2Se3%20和%20Sb2S3%20混合%20粉末%20as
DOI：
10.1016/j.jpowsour.2021.229737
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发表时间：
2021-03-07
影响因子：
9.2
通讯作者：
Akiyama, Hidefumi
中科院分区：
文献类型：
--
作者：
Hu, Xiaobo;Tao, Jiahua;Akiyama, Hidefumi
本研究以Sb_2Se_3和Sb_2S_3的混合粉末为蒸发源，采用气相传输沉积（VTD）法制备了Sb-2（S，Se）_3薄膜。相应的玻璃/ITO/CdS/Sb-2（S，Se）（3）/Au太阳能电池的性能被发现与Sb_2S_3与总粉末混合物之间的质量比相关。比较了四种不同Sb_2S_3质量比（x = 0.1，0.25，0.5和0.75）的Sb-_2（S，Se）_3薄膜和电池器件的性能。此外，电性能-从黑暗和光明的J-V测量;结构特性-从X射线衍射和扫描电子显微镜测量;和载流子复合率在缓冲/吸收界面的空间电荷区（SCR）和准中性区-从温度照明依赖的开路电压（VOC）测量-进行比较。结果表明，Sb_2S_3质量比为0.25时，Sb-2（S，Se）_3太阳电池的结晶度最佳，深陷阱密度最低，界面载流子复合率最小，效率最高，为7.31%。
In this study, Sb-2(S,Se)(3) thin films are fabricated using the vapor transport deposition (VTD) method, with Sb2Se3 and Sb2S3 mixed powders as the evaporation source. The performance of the corresponding glass/ITO/CdS/Sb-2(S,Se)(3)/Au solar cells are found to be correlated to the mass ratio between Sb2S3 and the overall powder mixture. The properties of the Sb-2(S,Se)(3) thin films and cell devices adopting four different Sb2S3 mass ratios (x = 0.1, 0.25, 0.5 and 0.75) are compared. Further, the electrical properties - from dark and light J-V measurements; structural properties - from X-ray diffraction and scanning electron microscope measurements; and carrier-recombination rates at the buffer/absorber interface in the space-charge region (SCR) and in the quasineutral region - from temperature-illumination-dependent open-circuit voltage (VOC) measurements - are compared. It is found that a Sb-2(S,Se)(3) solar cell with a Sb2S3 mass ratio of 0.25 had optimal crystallinity, the lowest density of deep traps and the smallest carrier-recombination rates at the interface, leading to a high efficiency of 7.31%.