Fabrication and photovoltaic characterization of bio-sensitized solar cells using myoglobin-based sensitizers

Chih Wei Chang; Chin Hao Chang; Hsueh Pei Lu; Tung Kung Wu; Eric Wei-Guang Diau

doi:10.1166/jnn.2009.SI05

Fabrication and photovoltaic characterization of bio-sensitized solar cells using myoglobin-based sensitizers

Chih Wei Chang, Chin Hao Chang, Hsueh Pei Lu, Tung Kung Wu, Eric Wei-Guang Diau

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1688-1695
Number of pages	8
Journal	Journal of Nanoscience and Nanotechnology
Volume	9
Issue number	3
DOIs	https://doi.org/10.1166/jnn.2009.SI05
Publication status	Published - 2009 Mar

All Science Journal Classification (ASJC) codes

Bioengineering
Chemistry(all)
Biomedical Engineering
Materials Science(all)
Condensed Matter Physics

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title = "Fabrication and photovoltaic characterization of bio-sensitized solar cells using myoglobin-based sensitizers",

abstract = "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.",

author = "Chang, {Chih Wei} and Chang, {Chin Hao} and Lu, {Hsueh Pei} and Wu, {Tung Kung} and {Wei-Guang Diau}, Eric",

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AU - Chang, Chih Wei

AU - Chang, Chin Hao

AU - Lu, Hsueh Pei

AU - Wu, Tung Kung

AU - Wei-Guang Diau, Eric

PY - 2009/3

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