Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (12): 128402-128402.doi: 10.1088/1674-1056/22/12/128402

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Effects of NPB anode buffer layer on charge collection in ZnO/MEH-PPV hybrid solar cells

龚伟a b, 徐征a b, 赵谡玲a b, 刘晓东a b, 樊星a b, 杨倩倩a b, 孔超a b   

  1. a Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing 100044, China;
    b Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
  • 收稿日期:2013-07-24 修回日期:2013-08-19 出版日期:2013-10-25 发布日期:2013-10-25
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant No. 2010CB327704), the National Natural Science Foundation of China (Grant No. 51272022), the Program for New Century Excellent Talents in University of Ministry of Education of China (Grant No. NCET-10-0220), the Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20120009130005), and the Fundamental Research Funds for the Central Universities, China (Grant No. 2012JBZ001).

Effects of NPB anode buffer layer on charge collection in ZnO/MEH-PPV hybrid solar cells

Gong Wei (龚伟)a b, Xu Zheng (徐征)a b, Zhao Su-Ling (赵谡玲)a b, Liu Xiao-Dong (刘晓东)a b, Fan Xing (樊星)a b, Yang Qian-Qian (杨倩倩)a b, Kong Chao (孔超)a b   

  1. a Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing 100044, China;
    b Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
  • Received:2013-07-24 Revised:2013-08-19 Online:2013-10-25 Published:2013-10-25
  • Contact: Xu Zheng E-mail:zhengxu@bjtu.edu.cn
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant No. 2010CB327704), the National Natural Science Foundation of China (Grant No. 51272022), the Program for New Century Excellent Talents in University of Ministry of Education of China (Grant No. NCET-10-0220), the Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20120009130005), and the Fundamental Research Funds for the Central Universities, China (Grant No. 2012JBZ001).

摘要: We investigate the effects of (N,N’-diphenyl)-N,N’-bis(1-naphthyl)-1,1’-biphenyl-4,4’-diamine (NPB) buffer layers on charge collection in inverted ZnO/MEH-PPV hybrid devices. The insertion of a 3-nm NPB thin layer enhances the efficiency of charge collection by improving charge transport and reducing the interface energy barrier, resulting in better device performances. S-shaped light J–V curve appears when the thickness of the NPB layer reaches 25 nm, which is induced by the inefficient charge extraction from MEH-PPV to Ag. Capacitance–voltage measurements are performed to further investigate the influence of the NPB layer on charge collection from both simulations and experiments.

关键词: NPB, capacitance–, voltage measurement, charge collection, buffer layer

Abstract: We investigate the effects of (N,N’-diphenyl)-N,N’-bis(1-naphthyl)-1,1’-biphenyl-4,4’-diamine (NPB) buffer layers on charge collection in inverted ZnO/MEH-PPV hybrid devices. The insertion of a 3-nm NPB thin layer enhances the efficiency of charge collection by improving charge transport and reducing the interface energy barrier, resulting in better device performances. S-shaped light J–V curve appears when the thickness of the NPB layer reaches 25 nm, which is induced by the inefficient charge extraction from MEH-PPV to Ag. Capacitance–voltage measurements are performed to further investigate the influence of the NPB layer on charge collection from both simulations and experiments.

Key words: NPB, capacitance–voltage measurement, charge collection, buffer layer

中图分类号:  (Photoelectric conversion)

  • 84.60.Jt
84.37.+q (Measurements in electric variables (including voltage, current, resistance, capacitance, inductance, impedance, and admittance, etc.)) 82.45.Mp (Thin layers, films, monolayers, membranes)