中国物理B ›› 2014, Vol. 23 ›› Issue (3): 38405-038405.doi: 10.1088/1674-1056/23/3/038405

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

UV-ozone-treated MoO3 as the hole-collecting buffer layer for high-efficiency solution-processed SQ：PC71BM photovoltaic devices

杨倩倩a b, 杨道宾c, 赵谡玲a b, 黄艳c, 徐征a b, 龚伟a b, 樊星a b, 刘志方a b, 黄清雨a b, 徐叙瑢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;
    c College of Chemistry, Sichuan University, Chengdu 610064, China
  • 收稿日期:2013-07-24 修回日期:2013-09-01 出版日期:2014-03-15 发布日期:2014-03-15
  • 基金资助:
    Project supported by the Program for New Century Excellent Talents in University of Ministry of Education of China (Grant No. NCET-10-0220), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20120009130005), and the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. 2012JBZ001).

UV-ozone-treated MoO3 as the hole-collecting buffer layer for high-efficiency solution-processed SQ：PC71BM photovoltaic devices

Yang Qian-Qian (杨倩倩)a b, Yang Dao-Bin (杨道宾)c, Zhao Su-Ling (赵谡玲)a b, Huang Yan (黄艳)c, Xu Zheng (徐征)a b, Gong Wei (龚伟)a b, Fan Xing (樊星)a b, Liu Zhi-Fang (刘志方)a b, Huang Qing-Yu (黄清雨)a b, Xu Xu-Rong (徐叙瑢)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;
    c College of Chemistry, Sichuan University, Chengdu 610064, China
  • Received:2013-07-24 Revised:2013-09-01 Online:2014-03-15 Published:2014-03-15
  • Contact: Zhao Su-Ling, Huang Yan E-mail:slzhao@bjtu.edu.cn;huangyan@scu.edu.cn
  • Supported by:
    Project supported by the Program for New Century Excellent Talents in University of Ministry of Education of China (Grant No. NCET-10-0220), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20120009130005), and the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. 2012JBZ001).

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摘要： The enhanced performance of a squaraine compound, with 2,4-bis[4-(N,N-diisobutylamino)-2,6-dihydroxyphenyl] squaraine as the donor and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) as the acceptor, in solution-processed organic photovoltaic devices is obtained by using UV-ozone-treated MoO3 as the hole-collecting buffer layer. The optimized thickness of the MoO3 layer is 8 nm, at which the device shows the best power conversion efficiency (PCE) among all devices, resulting from a balance of optical absorption and charge transport. After being treated by UV-ozone for 10 min, the transmittance of the MoO3 film is almost unchanged. Atomic force microscopy results show that the treated surface morphology is improved. A high PCE of 3.99% under AM 1.5 G illumination (100 mW/cm2) is obtained.

关键词: organic photovoltaic devices, hole-collecting buffer layer, MoO3, UV-ozone

Abstract: The enhanced performance of a squaraine compound, with 2,4-bis[4-(N,N-diisobutylamino)-2,6-dihydroxyphenyl] squaraine as the donor and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) as the acceptor, in solution-processed organic photovoltaic devices is obtained by using UV-ozone-treated MoO3 as the hole-collecting buffer layer. The optimized thickness of the MoO3 layer is 8 nm, at which the device shows the best power conversion efficiency (PCE) among all devices, resulting from a balance of optical absorption and charge transport. After being treated by UV-ozone for 10 min, the transmittance of the MoO3 film is almost unchanged. Atomic force microscopy results show that the treated surface morphology is improved. A high PCE of 3.99% under AM 1.5 G illumination (100 mW/cm2) is obtained.

Key words: organic photovoltaic devices, hole-collecting buffer layer, MoO3, UV-ozone

中图分类号:  (Photoelectric conversion)

  • 84.60.Jt
85.60.Bt (Optoelectronic device characterization, design, and modeling) 88.40.hj (Efficiency and performance of solar cells) 88.40.jr (Organic photovoltaics)