Interfacial nanostructuring on the performance of polymer/TiO2 nanorod bulk heterojunction solar cells

Yun Yue Lin, Tsung Hung Chu, Shao Sian Li, Chia Hao Chuang, Chia Hao Chang, Wei Fang Su, Ching Pin Chang, Ming Wen Chu, Chun Wei Chen

Research output: Contribution to journalArticle

287 Citations (Scopus)

Abstract

This work presents polymer photovoltaic devices based on poly(3-hexylthiophene) (P3HT) and TiO 2 nanorod hybrid bulk heterojunctions. Interface modification of a TiO 2 nanorod surface is conducted to yield a very promising device performance of 2.20% with a short circuit current density (J sc) of 4.33 mA/ cm 2, an open circuit voltage (∨ oc) of 0.78 V, and a fill factor (FF) of 0.65 under simulated A.M. 1.5 illumination (100 mW/cm 2). The suppression of recombination at P3HT/TiO 2 nanorod interfaces by the attachment of effective ligand molecules substantially improves device performance. The correlation between surface photo voltage and hybrid morphology is revealed by scanning Kelvin probe microscopy. The proposed method provides a new route for fabricating low-cost, environmentally friendly polymer/inorganic hybrid bulk heterojunction photovoltaic devices.

Original languageEnglish
Pages (from-to)3644-3649
Number of pages6
JournalJournal of the American Chemical Society
Volume131
Issue number10
DOIs
Publication statusPublished - Mar 18 2009
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis
  • Biochemistry
  • Colloid and Surface Chemistry

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    Lin, Y. Y., Chu, T. H., Li, S. S., Chuang, C. H., Chang, C. H., Su, W. F., Chang, C. P., Chu, M. W., & Chen, C. W. (2009). Interfacial nanostructuring on the performance of polymer/TiO2 nanorod bulk heterojunction solar cells. Journal of the American Chemical Society, 131(10), 3644-3649. https://doi.org/10.1021/ja8079143