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Application of UV-absorbing silver(I) luminescent down shifter for PTB7 organic solar cells for enhanced efficiency and stability

Moudam, O. and Bristow, N. and Chang, S.W. and Horie, M. and Kettle, J. (2015) Application of UV-absorbing silver(I) luminescent down shifter for PTB7 organic solar cells for enhanced efficiency and stability. RSC Advances, 5. pp. 12397-12402. DOI: 10.1039/C4RA14794D

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Abstract

Presented in this work is the application of a new silver(I) complex [Ag(POP)(Bphen)](BF4) (denoted AgPOP) to provide a means for down-shifting incident ultraviolet (UV) light into the visible range for PTB7-based organic solar cells. The synthesis, material, and optical characterisation of the AgPOP with PTB7 are reported. This material was applied to the OPV light-incident surface without the need for a host polymer. The luminescent down shifting layer serves two purposes. Firstly it improves the photocurrent of the OPV, and thus the efficiency through enhancement of the UV spectral response of the device. This is corroborated by external quantum efficiency data showing enhanced performance at UV wavelengths. Secondly, the AgPOP layer reduces the effect of degradation that originates from UV exposure, which leads to enhanced lifetime.

Item Type: Article
Subjects: Research Publications
Departments: College of Physical and Applied Sciences > School of Electronic Engineering
Date Deposited: 24 Mar 2015 03:31
Last Modified: 23 Sep 2015 02:50
ISSN: 2046-2069
URI: http://e.bangor.ac.uk/id/eprint/3673
Identification Number: DOI: 10.1039/C4RA14794D
Publisher: Royal Society of Chemistry
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