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Organic Sensitizers with Bridged Triphenylamine Donor Units for Efficient Dye-Sensitized Solar Cells

Cai, Liping, Tsao, Hoi Nok, Zhang, Wei, Wang, Long, Xue, Zhaosheng, Grätzel, Michael and Liu, Bin (2013) Organic Sensitizers with Bridged Triphenylamine Donor Units for Efficient Dye-Sensitized Solar Cells Advanced Energy Materials, 3 (2). pp. 200-205.

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Abstract

Bridged triphenylamine was chosen as the donor unit for metal-free organic sensitizers in dye-sensitized solar cells (DSSCs). The easily constructed alkene linkage between the donor and the spacer improves the molecule's delocalization and causes a large red shift in its absorption peaks. Planarization of the donor and the use of alkene linkage have proven powerful in extending the red light response of the sensitizer, leading to a significant enhancement in photocurrent density of the device. As a result, devices sensitized with target sensitizers LC-2 (η = 7.51%) and LC-3 (η = 8.00%) exhibited more than 70% efficiency increase over devices sensitized with the reference sensitizer LC-1 (η = 4.44%).

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
NameEmailORCID
Cai, LipingUNSPECIFIEDUNSPECIFIED
Tsao, Hoi NokUNSPECIFIEDUNSPECIFIED
Zhang, Weiwz0003@surrey.ac.ukUNSPECIFIED
Wang, LongUNSPECIFIEDUNSPECIFIED
Xue, ZhaoshengUNSPECIFIEDUNSPECIFIED
Grätzel, MichaelUNSPECIFIEDUNSPECIFIED
Liu, BinUNSPECIFIEDUNSPECIFIED
Date : February 2013
Identification Number : https://doi.org/10.1002/aenm.201200435
Copyright Disclaimer : © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Depositing User : Clive Harris
Date Deposited : 02 Jun 2017 10:27
Last Modified : 05 Jun 2017 09:32
URI: http://epubs.surrey.ac.uk/id/eprint/841278

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