期刊
CHEMSUSCHEM
卷 9, 期 18, 页码 2567-2571出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201600762
关键词
additive free; hole-transport material; perovskite solar cells; polymer; stability
资金
- Marie Skodowska Curie fellowship, H2020 Grant [665667]
- European Union's Seventh Framework Programme [291771]
- European Union of the MESO [604032]
- Swiss National Science Foundation under NRP 70 [407040_154056]
- Swiss National Science Foundation (SNF) [407040_154056] Funding Source: Swiss National Science Foundation (SNF)
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.
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