期刊
ACS ENERGY LETTERS
卷 4, 期 11, 页码 2683-2688出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.9b01949
关键词
-
类别
资金
- National 973 Program [2015CB932204]
- National Science Foundation of China [51673165, 91733302]
- Key Technology R&D Program of Science and Technology Department of Jiangsu Province [BE2014147-1]
Amelioration of the mobility and, in particular, the thermal stability of a hole-transporting molecular semiconductor is a practicable strategy to attain the enhancement of both power conversion efficiency (PCE) and operational durability of perovskite solar cells (PSCs). Here a cost-effective double-[4]helicene-based molecular semiconductor (DBC-OMeDPA) is synthesized for a solution-deposited thin film, exhibiting an improved hole mobility in comparison with state-of-the-art spiro-OMeTAD control. X-ray crystallographic analysis and theoretical calculation reveal the three-dimensional molecular stacking and multidirectional hole-transporting property of DBC-OMeDPA, clarifying the microscopic mechanism of the hole-transport process. A better PCE of 22% at the AM 1.5G conditions is achieved for PSCs with DBC-OMeDPA as the hole-transporter. Moreover, PSCs using DBC-OMeDPA characteristic of an elevated intrinsic glass transition temperature of 154 degrees C maintain a stable PCE output for hundreds of hours at 60 degrees C under equivalent full sunglight soaking.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据