Nanoscale localized contacts for high fill factors in polymer-passivated perovskite solar cells

doi:10.1126/science.abb8687

GSTDTAP > 气候变化

DOI	10.1126/science.abb8687
	Nanoscale localized contacts for high fill factors in polymer-passivated perovskite solar cells
	Jun Peng; Daniel Walter; Yuhao Ren; Mike Tebyetekerwa; Yiliang Wu; The Duong; Qiaoling Lin; Juntao Li; Teng Lu; Md Arafat Mahmud; Olivier Lee Cheong Lem; Shenyou Zhao; Wenzhu Liu; Yun Liu; Heping Shen; Li Li; Felipe Kremer; Hieu T. Nguyen; Duk-Yong Choi; Klaus J. Weber; Kylie R. Catchpole; Thomas P. White
	2021-01-22
发表期刊	Science
出版年	2021
英文摘要	In perovskite solar cells, the insulating nature of passivation layers needed to boost open-circuit voltage also increases the series resistance of the cell and limits the fill factor. Most improvements in power conversion efficiency have come from higher open-circuit voltage, with most fill factor improvements reported for very small-area cells. Peng et al. used a nanostructured titanium oxide electron transport layer to boost the fill factor of larger-area cells (1 square centimeter) to 0.84 by creating local regions with high conductivity. Science , this issue p. [390][1] Polymer passivation layers can improve the open-circuit voltage of perovskite solar cells when inserted at the perovskite–charge transport layer interfaces. Unfortunately, many such layers are poor conductors, leading to a trade-off between passivation quality (voltage) and series resistance (fill factor, FF). Here, we introduce a nanopatterned electron transport layer that overcomes this trade-off by modifying the spatial distribution of the passivation layer to form nanoscale localized charge transport pathways through an otherwise passivated interface, thereby providing both effective passivation and excellent charge extraction. By combining the nanopatterned electron transport layer with a dopant-free hole transport layer, we achieved a certified power conversion efficiency of 21.6% for a 1-square-centimeter cell with FF of 0.839, and demonstrate an encapsulated cell that retains ~91.7% of its initial efficiency after 1000 hours of damp heat exposure. [1]: /lookup/doi/10.1126/science.abb8687
领域	气候变化 ; 资源环境
URL	查看原文
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/312366
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Jun Peng,Daniel Walter,Yuhao Ren,et al. Nanoscale localized contacts for high fill factors in polymer-passivated perovskite solar cells[J]. Science,2021.
APA	Jun Peng.,Daniel Walter.,Yuhao Ren.,Mike Tebyetekerwa.,Yiliang Wu.,...&Thomas P. White.(2021).Nanoscale localized contacts for high fill factors in polymer-passivated perovskite solar cells.Science.
MLA	Jun Peng,et al."Nanoscale localized contacts for high fill factors in polymer-passivated perovskite solar cells".Science (2021).