Ke Qi Bin, Wu Jia-Ren, Lin Chia-Chen, Chang Sheng Hsiung
Department of Physics, Chung Yuan Christian University, Taoyuan 320314, Taiwan.
R&D Center for Membrane Technology and Center for Nano Technology, Chung Yuan Christian University, Taoyuan 320314, Taiwan.
Polymers (Basel). 2022 Feb 21;14(4):823. doi: 10.3390/polym14040823.
The power conversion efficiencies (PCEs) of metal-oxide-based regular perovskite solar cells have been higher than 25% for more than 2 years. Up to now, the PCEs of polymer-based inverted perovskite solar cells are widely lower than 23%. PEDOT:PSS thin films, modified PTAA thin films and P3CT thin films are widely used as the hole transport layer or hole modification layer of the highlyefficient inverted perovskite solar cells. Compared with regular perovskite solar cells, polymer-based inverted perovskite solar cells can be fabricated under relatively low temperatures. However, the intrinsic characteristics of carrier transportation in the two types of solar cells are different, which limits the photovoltaic performance of inverted perovskite solar cells. Thanks to the low activation energies for the formation of high-quality perovskite crystalline thin films, it is possible to manipulate the optoelectronic properties by controlling the crystal orientation with the different polymer-modified ITO/glass substrates. To achieve the higher PCE, the effects of polymer-modified ITO/glass substrates on the optoelectronic properties and the formation of perovskite crystalline thin films have to be completely understood simultaneously.
基于金属氧化物的常规钙钛矿太阳能电池的功率转换效率（PCE）超过25%已有两年多时间。到目前为止，基于聚合物的倒置钙钛矿太阳能电池的PCE普遍低于23%。聚（3,4-乙撑二氧噻吩）：聚苯乙烯磺酸盐（PEDOT:PSS）薄膜、改性聚（三苯胺-alt-4,4'-二(咔唑-9)-三联苯）（PTAA）薄膜和聚（3-己基噻吩）（P3CT）薄膜被广泛用作高效倒置钙钛矿太阳能电池的空穴传输层或空穴修饰层。与常规钙钛矿太阳能电池相比，基于聚合物的倒置钙钛矿太阳能电池可以在相对较低的温度下制备。然而，这两种太阳能电池中载流子传输的内在特性不同，这限制了倒置钙钛矿太阳能电池的光伏性能。由于形成高质量钙钛矿晶体薄膜的活化能较低，通过用不同的聚合物改性氧化铟锡（ITO）/玻璃基板控制晶体取向来操纵光电特性成为可能。为了实现更高的PCE，必须同时全面了解聚合物改性ITO/玻璃基板对光电特性和钙钛矿晶体薄膜形成的影响。
