Single-Wall Carbon Nanotube Films for Photocurrent Generation. A Prompt Response to Visible-Light Irradiation

Electrophoretically deposited single-wall carbon nanotube (SWCNT) films on optically transparent electrodes are photoelctrochemically active and generate photocurrent upon visible excitation. A low photon-to-current conversion efficiency of 0.15% suggests that most of the photogenerated charge carri...

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Bibliographic Details
Published in:The journal of physical chemistry. B 2004-11, Vol.108 (44), p.17015-17018
Main Authors: Barazzouk, Said, Hotchandani, Surat, Vinodgopal, K, Kamat, Prashant V
Format: Article
Language:English
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Summary:Electrophoretically deposited single-wall carbon nanotube (SWCNT) films on optically transparent electrodes are photoelctrochemically active and generate photocurrent upon visible excitation. A low photon-to-current conversion efficiency of 0.15% suggests that most of the photogenerated charge carriers are lost in the recombination process. Time-resolved transient absorption experiments confirm the charge separation following the laser-pulse excitation of SWCNTs. Relaxation of photogenerated charge carriers in the SWCNT to the lowest energy gap occurs in ∼1 ps.
ISSN:1520-6106
1520-5207
DOI:10.1021/jp0458405