Photocurrent enhancement of interlocked LB film dye layers in a p-CuSCN sensitised photoelectrochemical cell

FERNANDO, C. A. N., PRIYANKARA, W. T. C. and DHARMADASA, I. M. (2002). Photocurrent enhancement of interlocked LB film dye layers in a p-CuSCN sensitised photoelectrochemical cell. Renewable Energy, 25 (1), 69-79.

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Link to published version:: 10.1016/S0960-1481(00)00205-6

Abstract

Dye sensitised photoelectrochemical (PEC) cells based on Cu/p-CuSCN/LB films have been studied with mixed Langmuir Blodgett (LB) films as the dye layer. The effects of mixed layers were investigated in detail by observing the changes of optical absorption and photocurrent in a PEC cell configuration. Enhancements in both optical absorption and photocurrent were found when a mixture of octadecyl methylviolet-C-18 (M-C-18) and dioctadecyl rhodamine (C-18-R-C-18) were deposited using the LB technique on p-CuSCN wide band gap semiconductor. The maximum photocurrent quantum efficiency of the PEC cell reached approximate to 36% in KI (10(-2) M)+I-2 (10(-4) M) electrolyte solution when mixed LB films were used as the dye layer. Photocurrent enhancement is believed to be the enhancement of light absorption of the dye layers due to the interlocking of M-C-18 between the double C-18 chains of rhodamine. (C) 2001 Elsevier Science Ltd. All rights reserved.

Item Type: Article
Research Institute, Centre or Group: Materials and Engineering Research Institute > Thin Films Research Centre > Electronic Materials and Sensors Research Group
Identification Number: 10.1016/S0960-1481(00)00205-6
Depositing User: Ann Betterton
Date Deposited: 08 Mar 2010 17:06
Last Modified: 08 Mar 2010 17:06
URI: http://shura.shu.ac.uk/id/eprint/1275

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