期刊
NANO LETTERS
卷 15, 期 4, 页码 2756-2762出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.5b00787
关键词
Graphdiyne doping; perovskite solar tell; PCBM; electrical conductivity; interfacial coverage
类别
资金
- National Natural Science Foundation of China [51202264, 61474125]
- Zhejiang Provincial Natural Science Foundation of China [LR14E030002]
- Hundred Talent Program of Chinese Academy of Sciences
- Ningbo City Natural Science Foundation of China [2014A610037]
Organic-inorganic perovskite solar cells have recently emerged at the forefront of photovoltaics research. Here, for the first time, graphdiyne (GD), a novel two dimension carbon material, is doped into PCBM layer of perovskite solar cell with an inverted structure (ITO/PEDOT:PSS/CH3NH3PbI3-xClx/PCBM:GD/C-60/Al) to improve the electron transport. The optimized PCE of 14.8% was achieved. Also, an average power conversion efficiency (PCE) of PCBM:GD-based devices was observed with 28.7% enhancement (13.9% vs 10.8%) compared to that of pure PCBM-based ones. According to scanning electron microscopy, conductive atomic force microscopy, space charge limited current, and photoluminescence quenching measurements, the enhanced current density and fill factor of PCBM:GD-based devices were ascribed to the better coverage on the perovskite layer, improved electrical conductivity, strong electron mobility, and efficient charge extraction. Small hysteresis and stable power output under working condition (14.4%) have also been demonstrated for PCBM:GD based devices. The enhanced device performances indicated the improvement of film conductivity and interfacial coverage based on GD doping which brought the high PCE of the devices and the data repeatability. In this work, GD demonstrates its great potential for applications in photovoltaic field owing to its networks with delocalized p-systems and unique conductivity advantage.
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