Effects of Mg salt-modified TiO2 on the photovoltaic performance of dye-sensitized solar cells

Title
Effects of Mg salt-modified TiO2 on the photovoltaic performance of dye-sensitized solar cells
Author(s)
박수경[박수경]김참[김참]김재홍배재영[배재영]한윤수[한윤수]
Keywords
SHELL NANOPOROUS ELECTRODE; RECOMBINATION; IMPROVEMENT; EFFICIENCY; CONVERSION; CIRCUIT; LAYERS; FILMS; CORE
Issue Date
201101
Publisher
ELSEVIER SCIENCE BV
Citation
CURRENT APPLIED PHYSICS, v.11, no.1, pp.S131 - S135
Abstract
This work reports on the preparation of Mg salts [MS; MgCO3 and Mg(CH3COO)2]-modified TiO2 electrodes by very simple dip coating and effects on the photovoltaic properties of dye-sensitized solar cells (DSSCs) with them. The DSSC with MS-modified TiO2 layer showed an increase in short-circuit current (J(SC)) and open-circuit voltage (V-OC), resulting in a power conversion efficiency (PCE) of 8.48% compared to that (7.27%) of reference device with bare TiO2. The improved J(SC) value was attributed to the increased dye adsorption. Electrochemical impedance spectroscopy, dark currente-voltage and incident photon-to-current conversion efficiency studies revealed that the V-OC enhancement was caused by the conduction band edge shift of TiO2 to a more negative potential due to the formation of a surface dipole. (c) 2010 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/25722http://dx.doi.org/10.1016/j.cap.2010.11.087
ISSN
1567-1739
Appears in Collections:
공과대학 > 화학공학부 > Articles
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