Effects of potential shift and efficiency of charge collection on nanotube-based porphyrin-sensitized solar cells with conjugated links of varied length

Liyang Luo, Chia Jung Lin, Chen Shiung Hung, Chen Fu Lo, Ching Yao Lin, Wei-Guang Diau

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

For dye-sensitized solar-cell devices fabricated from porphyrin sensitizers with links of varied length (PE1-PE4) adsorbed on anodic titanium-oxide nanotube arrays, we measured induced photocurrent and photovoltage decays under constant bias illumination; the evaluated efficiencies of charge collection of the devices show a systematic trend PE4 > PE3 > PE2 > PE1 at a large short-circuit current, implying that a long link would improve the charge separation if the electrons were effectively injected into the semiconductor.

Original languageEnglish
Pages (from-to)12973-12977
Number of pages5
JournalPhysical Chemistry Chemical Physics
Volume12
Issue number40
DOIs
StatePublished - 28 Oct 2010

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