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Issue 38, 2015
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An intermediate band dye-sensitised solar cell using triplet–triplet annihilation

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Abstract

A new mechanism of charge photogeneration is demonstrated for the first time, based on organic molecular structures. This intermediate band approach, integrated into a dye-sensitised solar cell configuration is shown to generate charges upon illumination with low energy photons. Specifically 610 nm photoexcitation of Pt porphyrins, through a series of energy transfer steps and triplet–triplet annihilation, excites a higher energy absorption onset molecule, which is then capable of charge injection into TiO2. Transient absorption measurements reveal further detail of the processes involved.

Graphical abstract: An intermediate band dye-sensitised solar cell using triplet–triplet annihilation

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Supplementary files

Article information


Submitted
14 Aug 2015
Accepted
19 Aug 2015
First published
19 Aug 2015

Phys. Chem. Chem. Phys., 2015,17, 24826-24830
Article type
Paper
Author version available

An intermediate band dye-sensitised solar cell using triplet–triplet annihilation

C. Simpson, T. M. Clarke, R. W. MacQueen, Y. Y. Cheng, A. J. Trevitt, A. J. Mozer, P. Wagner, T. W. Schmidt and A. Nattestad, Phys. Chem. Chem. Phys., 2015, 17, 24826
DOI: 10.1039/C5CP04825G

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