Modulation of photocarrier dynamics in indoline dye-modified TiO 2 nanorod array/P3HT hybrid solar cell with 4- tert -butylpridine

Shu Chien Hsu, Wen Pin Liao, Wan Hsien Lin, Jih Jen Wu

研究成果: Article同行評審

22 引文 斯高帕斯(Scopus)

摘要

The influences of the 4-tert-butylpridine (TBP) treatment prior to the P3HT infiltration on the performance of the D149-modified TiO2 nanorod (NR) array/P3HT solar cell are investigated in this work. The efficiency of the D149-modified TiO2 NR array/P3HT hybrid solar cell is enhanced from 1.58% to 1.83% through the TBP treatment for a proper duration. With the cell characteristic of both D149 and P3HT contributing to the photocurrent, the short-circuit current density of the hybrid solar cell is enhanced by 30% with the TBP treatment. Absorption spectra indicate desorption of D149 molecules from TiO2 NRs with TBP treatment, suggesting that part of the TiO 2 NR surface is passive by TBP molecules. Time-resolved photoluminescence and electrochemical impedance spectroscopy are employed to investigate the photocarrier dynamics of the hybrids. The results indicate that the photocarrier dynamics are modulated to decrease both the photocarrier generation rate and the recombination rate at the interface of D149-modified TiO2 NR and P3HT when TBP molecules are adsorbed on TiO2 NRs after the treatment. The enrichment of the photocurrent in the D149-modified TiO2 NR array/P3HT hybrid solar cell is, therefore, achievable with an appropriate ratio of D149 and TBP coadsorbed on the TiO2 NR array.

原文English
頁(從 - 到)25721-25726
頁數6
期刊Journal of Physical Chemistry C
116
發行號49
DOIs
出版狀態Published - 2012 十二月 13

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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