题目：

Solution-Processable Ultrathin Black Phosphorus as an Effective Electron Transport Layer in Organic Photovoltaics

作者：

Shenghuang Lin,^1,2 Shenghua Liu,¹ Zhibin Yang,¹ Yanyong Li,¹ Tsz Wai Ng,³ Zaiquan Xu,² Qiaoliang Bao,^2,4 Jianhua Hao, Chun-Sing Lee, ³Charles Surya, ⁵Feng Yan,^*1 and Shu Ping Lau^*1

单位：

¹Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China

²Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China

³Center of Super-Diamond and Advanced Film (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, P. R. China

⁴Department of Materials Science and Engineering, Monash University, Clayton, VIC 3800, Australia

⁵ Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, P. R. China

摘要：

2D van der Waals crystals, possessing excellent electronic and physical properties, have been intriguing building blocks for organic optoelectronic devices. Most of the 2D materials are served as hole transport layers in organic devices. Here,it is reported that solution exfoliated few layers black phosphorus (BP) can be served as an effective electron transport layer (ETL) in organic photovoltaics (OPVs) for the first time. The power conversion efficiencies (PCEs) of the BP-incorporated OPVs can be improved to 8.18% in average with the relative enhancement of 11%. The incorporation of BP flakeswith the optimum thickness of 10 nm can form cascaded band structure in OPVs, which can facilitate electron transport and enhance the PCEs of the devices. This study opens an avenue in using solution exfoliated BP as a highly efficient ETL for organic optoelectronics.

影响因子：

11.805

分区情况：

1区

链接：

http://onlinelibrary.wiley.com/doi/10.1002/adfm.201503273/full