用于无铅钙钛矿太阳能电池的嵌入MXene的聚（3,4-乙撑二氧噻吩）：聚苯乙烯磺酸空穴传输材料
MXene-Embedded PEDOT:PSS Hole-Transport Material for Lead-Free Perovskite Solar Cells.
作者信息
Ling JinKiong, Cuzzupè Daniele T, Din Muhammad Faraz Ud, Stepura Anastasiia, Burgard Tom, Temitmie Yekitwork Abebe, Majkova Eva, Omastova Maria, Jose Rajan, Schmidt-Mende Lukas, Fakharuddin Azhar
机构信息
Department of Physics and Zunkunftskolleg, University of Konstanz, 78457 Konstanz, Germany.
Institute of Photovoltaic, 18 Boulevard Thomas Gobert, 91120 Palaiseau, France.
出版信息
ACS Appl Energy Mater. 2024 Aug 23;7(17):7152-7158. doi: 10.1021/acsaem.3c02928. eCollection 2024 Sep 9.
Improving the energy alignment between charge-transport layers and the perovskite is crucial for further enhancing the photovoltaic performance of tin-based perovskite solar cells (PSCs). Herein, the role of TiCT MXene in a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hole transport layer (HTL) on the photovoltaic properties of PSCs is investigated as a function of its concentration. An improved perovskite film formation with reduced pinhole density and a more uniform contact potential difference is noted when MXene is embedded in the PEDOT:PSS HTL. The work function of the HTL is increased according to photoelectronic measurements, leading to a favorable energy alignment with the HOMO of PEAFASnI perovskite. PSCs fabricated using a MXene-embedded PEDOT:PSS HTL delivered a power conversion efficiency (PCE) of 8.35% compared to 7.35% from the pristine counterpart, while retaining ∼90% of its initial PCE after 450 h of storage in a N atmosphere.
改善电荷传输层与钙钛矿之间的能量匹配对于进一步提高锡基钙钛矿太阳能电池（PSC）的光伏性能至关重要。在此，研究了TiCT MXene在聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT:PSS）空穴传输层（HTL）中对PSC光伏性能的作用，并将其作为浓度的函数进行研究。当MXene嵌入PEDOT:PSS HTL中时，可观察到钙钛矿薄膜形成得到改善，针孔密度降低，接触电势差更加均匀。根据光电子测量结果，HTL的功函数增加，从而与PEAFASnI钙钛矿的HOMO形成有利的能量匹配。使用嵌入MXene的PEDOT:PSS HTL制备的PSC的功率转换效率（PCE）为8.35%，而原始对应物的PCE为7.35%，并且在N气氛中储存450小时后仍保留其初始PCE的约90%。
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