材料科学
钙钛矿(结构)
热稳定性
复合数
半导体
制作
太阳能电池
硅
化学工程
光电子学
纳米技术
复合材料
医学
替代医学
病理
工程类
作者
Niansheng Xu,Yuyan Zhang,Lingyi Fang,Tianyu Li,Xinrui Xie,Jing Zhang,Peng Wang
出处
期刊:ACS materials letters
[American Chemical Society]
日期:2021-11-24
卷期号:4 (1): 11-20
被引量:12
标识
DOI:10.1021/acsmaterialslett.1c00670
摘要
Despite the efficiency comparable to crystalline silicon photovoltaics, it is still a severe concern on the long-term stability under the stress of heat, light, and bias potential for perovskite solar cell (PSC). Here, we report a triple aza[6]helicene-based molecular semiconductor (TBTA[6]H) characteristic of a fully fused conjugated backbone. TBTA[6]H presents superior solubility and glass-transition temperature (Tg). An air-doped composite of TBTA[6]H with a high electrical conductivity of 353 μS cm–1 is still featured by a Tg of 112 °C, enabling the fabrication of 22% efficiency, 85 °C durable PSCs. The TBTA[6]H composite not only exhibits an excellent morphology stability at 85 °C in PSCs, but also remarkably attenuates the thermal degradation of photoactive perovskite layer. The cell with TBTA[6]H also displays an excellent operation stability under the continuous full sunlight soaking at 55 °C.
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