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Aqueous-solution-processable metal oxides for high-performance organic and perovskite solar cells
Nanoscale ( IF 5.8 ) Pub Date : 2017-08-18 00:00:00 , DOI: 10.1039/c7nr04692h
Yan-Hui Lou 1, 2, 3, 4, 5 , Zhao-Kui Wang 1, 2, 3, 4, 5
Affiliation  

Poly(3,4-ethylene dioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) is a widely utilized hole-transporting material (HTM) in planar photovoltaic devices, such as organic solar cells (OSCs) and perovskite solar cells (PSCs). However, the hygroscopic nature of PEDOT:PSS aqueous dispersions may restrict their future application. Therefore, it is necessary to develop other effective and stable HTMs to achieve high-performance photovoltaic devices. Herein, we demonstrate a facile route to deposit solution-processed MoO3, GeO2, V2O5 and CrO3 thin films as hole-transporting layers by directly dissolving their commercial powders in deionized water. Among these, the solution-processed V2O5 (sV2O5) film exhibited the highest work function of 5.2 eV, and the best hydrophobicity, with a contact angle of 77.2°. The sV2O5-based OSCs and PSCs presented power conversion efficiencies (PCEs) of 8.36% and 14.13%, respectively. Notably, the PEDOT:PSS V2O5 composite HTM based device obtained a maximum PCE of 18.03% with a Voc exceeding 1.0 V. These aqueous-solution-processed HTMs have potential applications in green and low-cost photovoltaic devices by virtue of their simple and ecofriendly preparations.

中文翻译:

用于高性能有机和钙钛矿太阳能电池的水溶液可加工金属氧化物

聚(3,4-乙撑二氧噻吩):聚(4-苯乙烯磺酸盐)(PEDOT:PSS)是在平面光伏设备中广泛使用的空穴传输材料(HTM),例如有机太阳能电池(OSC)和钙钛矿太阳能电池( PSC)。但是,PEDOT:PSS水性分散液的吸湿性可能会限制其未来的应用。因此,有必要开发其他有效且稳定的HTM来实现高性能的光伏设备。在本文中,我们证明了通过将溶液处理的MoO 3,GeO 2,V 2 O 5和CrO 3薄膜直接沉积在去离子水中来作为空穴传输层的简便方法。其中,固溶处理的V 2 O5 s V 2 O 5)薄膜具有5.2 eV的最高功函和最佳的疏水性,接触角为77.2°。基于s V 2 O 5的OSC和PSC的功率转换效率(PCE)分别为8.36%和14.13%。值得注意的是,基于PEDOT:PSS V 2 O 5复合HTM的器件在V oc超过1.0 V时获得的最大PCE为18.03%。这些水溶液处理的HTM由于具有以下优点而在绿色和低成本光伏器件中具有潜在的应用他们简单而环保的准备工作。
更新日期:2017-09-21
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