中国物理B ›› 2012, Vol. 21 ›› Issue (11): 118401-118401.doi: 10.1088/1674-1056/21/11/118401

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

Application of TiO2 with different structures in solar cells

张天慧, 朴玲钰, 赵谡玲, 徐征, 吴谦, 孔超   

  1. a National Center for Nanoscience and Technology, Beijing 100190, China;
    b Key Laboratory of Luminescence and Optical Information of the Ministry of Education Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
  • 收稿日期:2012-01-15 修回日期:2012-06-11 出版日期:2012-10-01 发布日期:2012-10-01
  • 基金资助:
    Project supported by the Ministry of Science and Technology of China (Grant No. 2011CB932802), the National Natural Science Foundation of China (Grant No. 60978060), and the Beijing Municipal Science & Technology Commission, China (Grant No. Z090803044009001).

Application of TiO2 with different structures in solar cells

Zhang Tian-Hui (张天慧), Piao Ling-Yu (朴玲钰), Zhao Su-Ling (赵谡玲), Xu Zheng (徐征), Wu Qian (吴谦), Kong Chao (孔超 )   

  1. a National Center for Nanoscience and Technology, Beijing 100190, China;
    b Key Laboratory of Luminescence and Optical Information of the Ministry of Education Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
  • Received:2012-01-15 Revised:2012-06-11 Online:2012-10-01 Published:2012-10-01
  • Contact: Piao Ling-Yu, Zhao Su-Ling E-mail:piaoly@nanoctr.cn; slzhao@bjtu.edu.cn
  • Supported by:
    Project supported by the Ministry of Science and Technology of China (Grant No. 2011CB932802), the National Natural Science Foundation of China (Grant No. 60978060), and the Beijing Municipal Science & Technology Commission, China (Grant No. Z090803044009001).

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摘要： The applications of TiO2-based devices are mainly dependent on their crystalline structure, morphology, size, and exposed facets. Two kinds of TiO2 with different structures, namely TiO2 pompons and TiO2 nanotubes, have been prepared by hydrothermal method. The TiO2 with different structures is characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Brunauer-Emmett-Teller (BET) surface area analysis. Solar cells based on poly(3-hexylthiophene) (P3HT) and TiO2 with different structures are fabricated. In the device ITO/TiO2/P3HT/Au, the P3HT is designed to act as the electron donor, and TiO2 pompons and TiO2 nanotubes act as the electron acceptor. The effects of TiO2 structure on the performance of hybrid heterojunction solar cells are investigated. The device with TiO2 pompons has an open circuit voltage (Voc) of 0.51 V, a short circuit current (Jsc) of 0.21 mA/cm2, and a fill factor (FF) of 28.3%. Another device with TiO2 nanotubes has a Voc of 0.5 V, Jsc of 0.27 mA/cm2, and FF of 28.4%. The results indicate that the TiO2 nanotubes with unidimensional structure have better carrier transport and light absorption properties than TiO2 pompons. Consequently, the solar cell based on TiO2 nanotubes has better performance.

关键词: TiO2 pompons, TiO2 nanotubes, heterojunction solar cell

Abstract: The applications of TiO2-based devices are mainly dependent on their crystalline structure, morphology, size, and exposed facets. Two kinds of TiO2 with different structures, namely TiO2 pompons and TiO2 nanotubes, have been prepared by hydrothermal method. The TiO2 with different structures is characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Brunauer-Emmett-Teller (BET) surface area analysis. Solar cells based on poly(3-hexylthiophene) (P3HT) and TiO2 with different structures are fabricated. In the device ITO/TiO2/P3HT/Au, the P3HT is designed to act as the electron donor, and TiO2 pompons and TiO2 nanotubes act as the electron acceptor. The effects of TiO2 structure on the performance of hybrid heterojunction solar cells are investigated. The device with TiO2 pompons has an open circuit voltage (Voc) of 0.51 V, a short circuit current (Jsc) of 0.21 mA/cm2, and a fill factor (FF) of 28.3%. Another device with TiO2 nanotubes has a Voc of 0.5 V, Jsc of 0.27 mA/cm2, and FF of 28.4%. The results indicate that the TiO2 nanotubes with unidimensional structure have better carrier transport and light absorption properties than TiO2 pompons. Consequently, the solar cell based on TiO2 nanotubes has better performance.

Key words: TiO2 pompons, TiO2 nanotubes, heterojunction solar cell

中图分类号:  (Photoelectric conversion)

  • 84.60.Jt
88.40.-j (Solar energy) 88.40.jr (Organic photovoltaics) 81.05.Hd (Other semiconductors)