Liquid medium annealing for fabricating durable perovskite solar cells with improved reproducibility

doi:10.1126/science.abh3884

GSTDTAP > 气候变化

DOI	10.1126/science.abh3884
	Liquid medium annealing for fabricating durable perovskite solar cells with improved reproducibility
	Nengxu Li; Xiuxiu Niu; Liang Li; Hao Wang; Zijian Huang; Yu Zhang; Yihua Chen; Xiao Zhang; Cheng Zhu; Huachao Zai; Yang Bai; Sai Ma; Huifen Liu; Xixia Liu; Zhenyu Guo; Guilin Liu; Rundong Fan; Hong Chen; Jianpu Wang; Yingzhuo Lun; Xueyun Wang; Jiawang Hong; Haipeng Xie; Devon S. Jakob; Xiaoji G. Xu; Qi Chen; Huanping Zhou
	2021-07-30
发表期刊	Science
出版年	2021
英文摘要	The conversion of precursors into the active layer of perovskite solar cells normally occurs by heating the underlying substrate. Conversion tends to occur near the top of the film, where solvent is lost, and unwanted preheating of reactants occurs near the substrate before the reaction. Li et al. show that the use of a surrounding heat transfer oil (anisole) leads to more rapid and even heating, removes solvent, and avoids air and water contamination effects. The larger grains and more uniform films led a much greater retention of efficiency in moving from small-area to large-area devices. Science , abh3884, this issue p. [561][1] Solution processing of semiconductors is highly promising for the high-throughput production of cost-effective electronics and optoelectronics. Although hybrid perovskites have potential in various device applications, challenges remain in the development of high-quality materials with simultaneously improved processing reproducibility and scalability. Here, we report a liquid medium annealing (LMA) technology that creates a robust chemical environment and constant heating field to modulate crystal growth over the entire film. Our method produces films with high crystallinity, fewer defects, desired stoichiometry, and overall film homogeneity. The resulting perovskite solar cells (PSCs) yield a stabilized power output of 24.04% (certified 23.7%, 0.08 cm2) and maintain 95% of their initial power conversion efficiency (PCE) after 2000 hours of operation. In addition, the 1-cm2 PSCs exhibit a stabilized power output of 23.15% (certified PCE 22.3%) and keep 90% of their initial PCE after 1120 hours of operation, which illustrates their feasibility for scalable fabrication. LMA is less climate dependent and produces devices in-house with negligible performance variance year round. This method thus opens a new and effective avenue to improving the quality of perovskite films and photovoltaic devices in a scalable and reproducible manner. [1]: /lookup/doi/10.1126/science.abh3884
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/335541
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Nengxu Li,Xiuxiu Niu,Liang Li,et al. Liquid medium annealing for fabricating durable perovskite solar cells with improved reproducibility[J]. Science,2021.
APA	Nengxu Li.,Xiuxiu Niu.,Liang Li.,Hao Wang.,Zijian Huang.,...&Huanping Zhou.(2021).Liquid medium annealing for fabricating durable perovskite solar cells with improved reproducibility.Science.
MLA	Nengxu Li,et al."Liquid medium annealing for fabricating durable perovskite solar cells with improved reproducibility".Science (2021).