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亚稳的Dion-Jacobson二维结构实现高效和稳定的钙钛矿型太阳能电池
作者:小柯机器人 发布时间:2021/11/28 13:17:56

2021年11月25日,《科学》杂志在线发表了美国国家可再生能源实验室Kai Zhu等研究人员的最新合作成果,该研究发现,亚稳的Dion-Jacobson二维结构实现高效和稳定的钙钛矿型太阳能电池。

研究人员最大限度地提高了亚稳Dion-Jacobson(DJ)二维过氧化物层上的空穴传输,这调整了不对称有机分子的方向排列。空穴传输的能量屏障降低使平面外传输率增加了4-5倍,n=1二维钙钛矿型太阳电池(PSC)的功率转换效率(PCE)为4.9%。
有了亚稳DJ二维表面层,三种常见的三维PSC的PCE提高了~12-16%,可以达到~24.7%。对于三阳离子混合卤化物PSC来说,在N2中~40°C的条件下,经过1000小时的1次日照操作,90%的初始PCE得以保留。
 
据悉,三维有机-无机卤化物PSC的性能可以通过使用具有高效电荷传输的二维层状过氧化物的表面处理而得到提高。
 
附:英文原文

Title: Metastable Dion-Jacobson 2D structure enables efficient and stable perovskite solar cells

Author: Fei Zhang, So Yeon Park, Canglang Yao, Haipeng Lu, Sean P. Dunfield, Chuanxiao Xiao, Soňa Uliná, Xiaoming Zhao, Linze Du Hill, Xihan Chen, Xiaoming Wang, Laura E. Mundt, Kevin H. Stone, Laura T. Schelhas, Glenn Teeter, Sean Parkin, Erin L. Ratcliff, Yueh-Lin Loo, Joseph J. Berry, Matthew C. Beard, Yanfa Yan, Bryon W. Larson, Kai Zhu

Issue&Volume: 2021-11-25

Abstract: The performance of three-dimensional (3D) organic-inorganic halide perovskite solar cells (PSCs) can be enhanced by surface treatment with 2D layered perovskites that have efficient charge transport. We maximized hole transport across the layers of a metastable Dion-Jacobson (DJ) 2D perovskite that tuned the orientational arrangements of asymmetric bulky organic molecules. The reduced energy barrier for hole transport increased out-of-plane transport rates by a factor of 4 to 5, and the power conversion efficiency (PCE) for the n=1 2D PSC was 4.9%. With the metastable DJ 2D surface layer, the PCE of three common 3D PSCs was enhanced by ~12–16% and could reach ~24.7%. For a triple-cation-mixed-halide PSC, 90% of the initial PCE was retained after 1000-hours of 1-sun operation at ~40°C in N2.

DOI: abj2637

Source: https://www.science.org/doi/10.1126/science.abj2637

 

期刊信息

Science:《科学》,创刊于1880年。隶属于美国科学促进会,最新IF:41.845
官方网址:https://www.sciencemag.org/
投稿链接:https://cts.sciencemag.org/scc/#/login