Evaporation of Eco-Friendly MoS2 Nanofilm for Interface Engineering in Carbon-Based Sb2(S,Se)3 Solar Cell
Evaporation of Eco-Friendly MoS2 Nanofilm for Interface Engineering in Carbon-Based Sb2(S,Se)3 Solar Cell
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DOI：
10.1021/acsaem.3c01295
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发表时间：
2023-10
影响因子：
6.4
通讯作者：
Limei Lin;Feng-Ying Wu;Zhipeng Huang;Li-Quan Yao;Hu Li;Ren-Yuan Liao;Ai-cheng Chen;Jianmin Li-J
中科院分区：
文献类型：
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作者：
Limei Lin;Feng-Ying Wu;Zhipeng Huang;Li-Quan Yao;Hu Li;Ren-Yuan Liao;Ai-cheng Chen;Jianmin Li-J
已报道的高效硫族锑化合物器件由于其优异的空穴迁移率和足够的能量取向而被有机空穴传输层(HTL，即Spiro-OMeTAD)长期采用。然而，有机HTL的高湿度敏感性和高昂的成本将阻碍其大规模应用。本文采用低成本、稳定的碳电极作为宽禁带Sb_2(S，Se)_3太阳电池的背接触材料，并利用具有合适能带结构和良好载流子迁移率的环保型MoS_2纳米薄膜来调节Sb_2(S，Se)_3/C界面的能级取向和载流子输运。热蒸发MoS2有效地缓解了严重的复合现象，显著提高了宽带隙Sb2(S，Se)3薄膜太阳电池的光电转换效率50%，最终获得了6.1%的光电转换效率，其中VOC0.76V，JSC13.5 mA/cm2，FF59%，是碳基Sb2(S，Se)3太阳电池中效率最高的之一。
The reported high efficiency antimony chalcogenides devices are chronically adopted with organic hole transport layers (HTLs, i.e., Spiro-OMeTAD) because of their superior hole mobility and adequate energetic alignment. However, the high moisture sensitivity and high cost of organic HTLs will hinder their large scale application. Herein, a low-cost and stable carbon electrode is used as the back contact material for wide bandgap Sb2(S,Se)3solar cells, and an eco-friendly MoS2nanofilm with a suitable band structure and excellent carrier mobility is then employed to regulate the interface of Sb2(S,Se)3/carbon in terms of energy level alignment and carrier transportation. The thermal evaporated MoS2effectively alleviates the serious recombination and remarkably improves the photoelectric conversion efficiency of wide bandgap Sb2(S,Se)3thin-film solar cells by 50%, finally achieving an impressive efficiency of 6.1% withVOCof 0.76 V,JSCof 13.5 mA/cm2, and FF of 59%, which is among the highest efficiencies of carbon-based Sb2(S,Se)3solar cells.