TY - JOUR
T1 - Fabrication and photovoltaic characterization of bio-sensitized solar cells using myoglobin-based sensitizers
AU - Chang, Chih Wei
AU - Chang, Chin Hao
AU - Lu, Hsueh Pei
AU - Wu, Tung Kung
AU - Wei-Guang Diau, Eric
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2009/3
Y1 - 2009/3
N2 - Myoglobin (Mb), reconstituted zinc protoporphyrin-apomyoglobin (ZnMb), and eosin-modified ZnMb (EoZnMb) were used as photosensitizers to functionalize TiO 2 nanocrystalline films for bio-sensitized solar-cell (BSSC) applications. For the Mb-sensitized SC, the poor cell performance was due to a reduction Fe(lll) - Fe(ll) that produces a photocurrent density of the device smaller than its unsensitized counterpart. The efficiencies of power conversion of both ZnMb and EoZnMb-sensitized SC were enhanced about ten times due to superior charge separation between TiO 2 and the protein, and due to smaller current leakage between TiO2 and the electrolyte. The cell performances of the BSSC devices are discussed in terms of an equivalent-circuit model.
AB - Myoglobin (Mb), reconstituted zinc protoporphyrin-apomyoglobin (ZnMb), and eosin-modified ZnMb (EoZnMb) were used as photosensitizers to functionalize TiO 2 nanocrystalline films for bio-sensitized solar-cell (BSSC) applications. For the Mb-sensitized SC, the poor cell performance was due to a reduction Fe(lll) - Fe(ll) that produces a photocurrent density of the device smaller than its unsensitized counterpart. The efficiencies of power conversion of both ZnMb and EoZnMb-sensitized SC were enhanced about ten times due to superior charge separation between TiO 2 and the protein, and due to smaller current leakage between TiO2 and the electrolyte. The cell performances of the BSSC devices are discussed in terms of an equivalent-circuit model.
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U2 - 10.1166/jnn.2009.SI05
DO - 10.1166/jnn.2009.SI05
M3 - Article
C2 - 19435026
AN - SCOPUS:66349085031
VL - 9
SP - 1688
EP - 1695
JO - Journal of Nanoscience and Nanotechnology
JF - Journal of Nanoscience and Nanotechnology
SN - 1533-4880
IS - 3
ER -