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Issue 5, 2011
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Enhanced light harvesting with π-conjugated cyclic aromatic hydrocarbons for porphyrin-sensitized solar cells

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Abstract

Zinc porphyrins in a series bearing a phenylethynyl, naphthalenylethynyl, anthracenylethynyl, phenanthrenylethynyl or pyrenylethynyl substituent, denoted LD1, LD2, LD3a, LD3p or LD4, respectively, were prepared as photosensitizers for dye-sensitized solar cells. The overall efficiencies of the corresponding devices show a trend LD4 > LD3p > LD2 > LD3a > LD1. Significantly, LD4 features JSC/mA cm−2 = 19.627, VOC/V = 0.711, and FF = 0.721, giving an efficiency η = 10.06% of power conversion. This value is superior to that of a N719-based solar cell fabricated under similar experimental conditions. The remarkable performance of the LD4 cell is rationalized to be due to the broader and more red-shifted spectral feature that makes the IPCE spectrum to cover broadly across the entire visible region, 400–800 nm.

Graphical abstract: Enhanced light harvesting with π-conjugated cyclic aromatic hydrocarbons for porphyrin-sensitized solar cells

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Article information


Submitted
14 Dec 2010
Accepted
24 Feb 2011
First published
22 Mar 2011

Energy Environ. Sci., 2011,4, 1788-1795
Article type
Paper

Enhanced light harvesting with π-conjugated cyclic aromatic hydrocarbons for porphyrin-sensitized solar cells

C. Wang, Y. Chang, C. Lan, C. Lo, E. Wei-Guang Diau and C. Lin, Energy Environ. Sci., 2011, 4, 1788
DOI: 10.1039/C0EE00767F

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