Efficient electron collection in hybrid polymer solar cells: In-situ-generated ZnO/poly(3-hexylthiophene) scaffolded by a TiO2 nanorod array

Wen Pin Liao, Jih-Jen Wu

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A nanoarchitectural hybrid polymer solar cell, integrating the ordered and the bulk heterojunction hybrid polymer solar cells, is fabricated by infiltrating the diethylzinc/poly(3-hexylthiophene) (P3HT) solution into the interstices of the TiO2 nanorod (NR) array. An inorganic network composed of tiny ZnO nanocrystals is constructed in the in-situ-generated hybrid within the interstice of the single-crystalline TiO2 NRs. The TiO2 NR array, which possesses a longer electron lifetime and an appropriate electron-transport rate, serves not only as an electron transporter/collector extended from fluorine-doped tin oxide (FTO) electrode to sustain the efficient electron collection but also as a scaffold to hold the sufficient amount of ZnO/P3HT hybrid. The in-situ-generated ZnO/P3HT hybrid layer with superior charge separation efficiency can therefore be thickened in the presence of a TiO2 NR array for increasing the light-harvesting efficiency. A notable efficiency of 2.46% is therefore attained in the TiO 2 NR-ZnO/P3HT hybrid solar cell.

Original languageEnglish
Pages (from-to)1983-1988
Number of pages6
JournalJournal of Physical Chemistry Letters
Volume4
Issue number11
DOIs
Publication statusPublished - 2013 Jun 26

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physical and Theoretical Chemistry

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