Additive-Free Transparent Triarylamine-Based Polymeric Hole-Transport Materials for Stable Perovskite Solar Cells

作者：Matsui Taisuke; Petrikyte Ieva; Malinauskas Tadas; Domanski Konrad; Daskeviciene Maryte; Steponaitis Matas; Gratia Paul; Tress Wolfgang; Correa Baena Juan Pablo; Abate Antonio; Hagfeldt Anders; Gratzel Michael; Nazeeruddin Mohammad Khaja; Getautis Vytautas^*; Saliba Michael^*

来源：Chemsuschem, 2016, 9(18): 2567-2571.

DOI：10.1002/cssc.201600762

• additive free
• hole-transport material
• perovskite solar cells
• polymer
• stability

Triarylamine-based polymers with different functional groups were synthetized as hole-transport materials (HTMs) for perovskite solar cells (PSCs). The novel materials enabled efficient PSCs without the use of chemical doping (or additives) to enhance charge transport. Devices employing poly(triarylamine) with methylphenylethenyl functional groups (V873) showed a power conversion efficiency of 12.3%, whereas widely used additive-free poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) demonstrated 10.8%. Notably, devices with V873 enabled stable PSCs under 1sun illumination at maximum power point tracking for approximately 40h at room temperature, and in the dark under elevated temperature (85 degrees C) for more than 140h. This is in stark contrast to additive-containing devices, which degrade significantly within the same time frame. The results present remarkable progress towards stable PSC under real working conditions and industrial stress tests.

• 出版日期2016-9-22