中国物理B ›› 2018, Vol. 27 ›› Issue (1): 17804-017804.doi: 10.1088/1674-1056/27/1/017804

所属专题: SPECIAL TOPIC — New generation solar cells

• SPECIAL TOPIC—Non-equilibrium phenomena in soft matters • 上一篇    下一篇

Electron transport properties of TiO2 shell on Al2O3 core in dye-sensitized solar cells

Dongmei Xie(解东梅), Xiaowen Tang(唐小文), Yuan Lin(林原), Pin Ma(马品), Xiaowen Zhou(周晓文)   

  1. 1 Beijing National laboratory for Molecular Sciences, Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2017-09-30 修回日期:2017-11-13 出版日期:2018-01-05 发布日期:2018-01-05
  • 通讯作者: Yuan Lin E-mail:linyuan@iccas.ac.cn
  • 基金资助:
    Project supported by the National Materials Genome Project of China (Grant No. 2016YFB0700600) and the National Natural Science Foundation of China (Grant No. 51673204).

Electron transport properties of TiO2 shell on Al2O3 core in dye-sensitized solar cells

Dongmei Xie(解东梅)1,2, Xiaowen Tang(唐小文)1,2, Yuan Lin(林原)1,2, Pin Ma(马品)1,2, Xiaowen Zhou(周晓文)1,2   

  1. 1 Beijing National laboratory for Molecular Sciences, Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-09-30 Revised:2017-11-13 Online:2018-01-05 Published:2018-01-05
  • Contact: Yuan Lin E-mail:linyuan@iccas.ac.cn
  • Supported by:
    Project supported by the National Materials Genome Project of China (Grant No. 2016YFB0700600) and the National Natural Science Foundation of China (Grant No. 51673204).

摘要: The performance of dye-sensitized solar cells (DSSCs) is strongly affected by the properties of semiconductor nanoparticles. In this work, we used TiO2 particles prepared by TiCl4 hydrolysis n times on Al2O3 films (A/T(n)), and investigated morphology, photoelectric, and electron transport properties of A/T(n). The TiO2 shell was composed of 10-20 nm nanoparticles and the number of nanoparticles increased with increasing TiCl4 treatment times. The highest photoelectric conversion efficiency of 3.23% was obtained as A/T(4). IMPS results indicated that electron transport rate was high enough to conduct current, and was not the dominating effect to limit the Jsc. Jsc was mainly determined by dye loading on TiO2 and the interconnection of TiO2. These may provide a new strategy for preparing semiconductor working electrodes for DSSC.

关键词: dye-sensitized solar cell, electron transportation, core-shell structure, intensity-modulated photocurrent spectroscopy

Abstract: The performance of dye-sensitized solar cells (DSSCs) is strongly affected by the properties of semiconductor nanoparticles. In this work, we used TiO2 particles prepared by TiCl4 hydrolysis n times on Al2O3 films (A/T(n)), and investigated morphology, photoelectric, and electron transport properties of A/T(n). The TiO2 shell was composed of 10-20 nm nanoparticles and the number of nanoparticles increased with increasing TiCl4 treatment times. The highest photoelectric conversion efficiency of 3.23% was obtained as A/T(4). IMPS results indicated that electron transport rate was high enough to conduct current, and was not the dominating effect to limit the Jsc. Jsc was mainly determined by dye loading on TiO2 and the interconnection of TiO2. These may provide a new strategy for preparing semiconductor working electrodes for DSSC.

Key words: dye-sensitized solar cell, electron transportation, core-shell structure, intensity-modulated photocurrent spectroscopy

中图分类号:  (Porous materials)

  • 78.55.Mb
72.20.Jv (Charge carriers: generation, recombination, lifetime, and trapping) 84.60.Jt (Photoelectric conversion) 88.40.H- (Solar cells (photovoltaics))