中国物理B ›› 2016, Vol. 25 ›› Issue (2): 28402-028402.doi: 10.1088/1674-1056/25/2/028402

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

Improving the performance of perovskite solar cells with glycerol-doped PEDOT:PSS buffer layer

Jian-Feng Li(李建丰), Chuang Zhao(赵创), Heng Zhang(张恒), Jun-Feng Tong(同军锋), Peng Zhang(张鹏), Chun-Yan Yang(杨春燕), Yang-Jun Xia(夏养君), Duo-Wang Fan(范多旺)   

  1. Key Laboratory of Optoelectronic Technology and Intelligent Control of Ministry Education, Lanzhou Jiaotong University, Lanzhou 730070, China
  • 收稿日期:2015-06-25 修回日期:2015-10-22 出版日期:2016-02-05 发布日期:2016-02-05
  • 通讯作者: Jian-Feng Li E-mail:ljfpyc@163.com
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61264002, 61166002, 91333206, and 51463011), the Natural Science Foundation of Gansu Province, China (Grant No. 1308RJZA159), the New Century Excellent Talents in University of Ministry of Education of China (Grant No. NCET-13-0840), the Research Project of Graduate Teacher of Gansu Province, China (Grant No. 2014A-0042), and the Postdoctoral Science Foundation from Lanzhou Jiaotong University, China.

Improving the performance of perovskite solar cells with glycerol-doped PEDOT:PSS buffer layer

Jian-Feng Li(李建丰), Chuang Zhao(赵创), Heng Zhang(张恒), Jun-Feng Tong(同军锋), Peng Zhang(张鹏), Chun-Yan Yang(杨春燕), Yang-Jun Xia(夏养君), Duo-Wang Fan(范多旺)   

  1. Key Laboratory of Optoelectronic Technology and Intelligent Control of Ministry Education, Lanzhou Jiaotong University, Lanzhou 730070, China
  • Received:2015-06-25 Revised:2015-10-22 Online:2016-02-05 Published:2016-02-05
  • Contact: Jian-Feng Li E-mail:ljfpyc@163.com
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61264002, 61166002, 91333206, and 51463011), the Natural Science Foundation of Gansu Province, China (Grant No. 1308RJZA159), the New Century Excellent Talents in University of Ministry of Education of China (Grant No. NCET-13-0840), the Research Project of Graduate Teacher of Gansu Province, China (Grant No. 2014A-0042), and the Postdoctoral Science Foundation from Lanzhou Jiaotong University, China.

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摘要：

In this paper, we investigate the effects of glycerol doping on transmittance, conductivity and surface morphology of poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate)) (PEDOT:PSS) and its influence on the performance of perovskite solar cells．The conductivity of PEDOT:PSS is improved obviously by doping glycerol. The maximum of the conductivity is 0.89 S/cm when the doping concentration reaches 6 wt%, which increases about 127 times compared with undoped. The perovskite solar cells are fabricated with a configuration of indium tin oxide (ITO)/PEDOT:PSS/CH3NH3PbI3/PC61BM/Al, where PEDOT:PSS and PC61BM are used as hole and electron transport layers, respectively. The results show an improvement of hole charge transport as well as an increase of short-circuit current density and a reduction of series resistance, owing to the higher conductivity of the doped PEDOT:PSS. Consequently, it improves the whole performance of perovskite solar cell. The power conversion efficiency (PCE) of the device is improved from 8.57% to 11.03% under AM 1.5 G (100 mW/cm2 illumination) after the buffer layer has been modified.

关键词: glycerol, PEDOT:PSS, perovskite solar cells

Abstract:

In this paper, we investigate the effects of glycerol doping on transmittance, conductivity and surface morphology of poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate)) (PEDOT:PSS) and its influence on the performance of perovskite solar cells．The conductivity of PEDOT:PSS is improved obviously by doping glycerol. The maximum of the conductivity is 0.89 S/cm when the doping concentration reaches 6 wt%, which increases about 127 times compared with undoped. The perovskite solar cells are fabricated with a configuration of indium tin oxide (ITO)/PEDOT:PSS/CH3NH3PbI3/PC61BM/Al, where PEDOT:PSS and PC61BM are used as hole and electron transport layers, respectively. The results show an improvement of hole charge transport as well as an increase of short-circuit current density and a reduction of series resistance, owing to the higher conductivity of the doped PEDOT:PSS. Consequently, it improves the whole performance of perovskite solar cell. The power conversion efficiency (PCE) of the device is improved from 8.57% to 11.03% under AM 1.5 G (100 mW/cm2 illumination) after the buffer layer has been modified.

Key words: glycerol, PEDOT:PSS, perovskite solar cells

中图分类号:  (Photoelectric conversion)

  • 84.60.Jt
88.40.H- (Solar cells (photovoltaics)) 84.60.Bk (Performance characteristics of energy conversion systems; figure of merit)