Chinese Journal of Applied Chemistry ›› 2020, Vol. 37 ›› Issue (6): 695-702.DOI: 10.11944/j.issn.1000-0518.2020.06.190329

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Preparation of TiO2 Branched Nanorod Array to Improve the Performance of Polymer Hybrid Solar Cell

QIAN Jin,HAO Yanzhong(),LI Jingqi,PEI Juan,LI Yingpin   

  1. College of Sciences,Hebei University of Science and Technology,Shijiazhuang 050018,China
  • Received:2019-12-10 Accepted:2020-03-19 Published:2020-06-01 Online:2020-06-08
  • Contact: HAO Yanzhong
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21173065, No.21603035), the Natural Science Foundation of Hebei Province of China(No.B2014208062, No.B2014208066)

Abstract:

TiO2 nanorod arrays (NRA) and branched TiO2 nanorod arrays (B-NRA) were prepared on conducting glass (FTO) by one-step hydrothermal method and two-step hydrothermal method, respectively. Sb2S3 nanoparticles (NPs) are deposited on TiO2 NRA and TiO2 B-NRA substrates by low temperature chemical bath deposition (CBD). Poly(3-hexylthiophene-2,5-diyl) and 2,2',7,7'-tetrakis-(N,N-di-p-methoxyphenylamine)-9,9'-spirobifluorene (P3HT and Spiro-OMeTAD) are spin-coated on the TiO2/Sb2S3 composite membrane successively to form TiO2(NRA)/Sb2S3/P3HT/Spiro-OMeTAD films and TiO2(B-NRA)/Sb2S3/P3HT/Spiro-OMeTAD films as photoactive layers of hybrid solar cells. The results show that the power conversion efficiency (PCE) of the hybrid solar cell assembled with TiO2(B-NRA)/Sb2S3/P3HT/Spiro-OMeTAD composite membrane structure is 2.92%, and the PCE of the hybrid solar cell assembled with TiO2(B-NRA)/Sb2S3/P3HT/Spiro-OMeTAD composite membrane structure is improved to 4.67%.

Key words: TiO2 branched nanorods, Sb2S3 nanoparticles, hybrid solar cell