Aggregation control of organic sensitizers for panchromatic dye co-sensitized solar cells

Title
Aggregation control of organic sensitizers for panchromatic dye co-sensitized solar cells
Author(s)
이치환김상아정미란안광순한윤수[한윤수]김재홍
Keywords
NANOCRYSTALLINE TIO2; CHARGE-TRANSFER; HIGH-EFFICIENCY; PHOTOVOLTAIC PERFORMANCE; RUTHENIUM SENSITIZERS; MOLECULAR DESIGN; LIGHT; CONVERSION; ABSORPTIVITY; ADSORPTION
Issue Date
201407
Publisher
IOP PUBLISHING LTD
Citation
JAPANESE JOURNAL OF APPLIED PHYSICS, v.53, no.8
Abstract
The photovoltaic properties of dye co-sensitized solar cells were compared with those of mono-sensitized devices. Co-sensitized TiO2 photoelectrodes were prepared from a phenothiazine chromophore for the RED dye and a squaraine chromophore for the BLUE dye to achieve panchromatic light absorption in dye co-sensitized solar cells (DSSCs). Co-sensitization on the TiO2 photo-electrode could reduce the aggregation of the BLUE dye adsorbed on the TiO2 surface, which led to an enhancement of the short circuit current (J(SC)) of the co-sensitized solar cells. The dye co-sensitized solar cells with the RED and BLUE dyes optimized according to the dipping time showed an increase in the photon-to-current efficiency compared to that of the solar cell with a mono-sensitized photo-electrode. The photovoltaic and aggregation properties of the DSSCs were examined by measuring the current-voltage curve, incident photon-to-current efficiency, and electrochemical impedance spectra. (C) 2014 The Japan Society of Applied Physics
URI
http://hdl.handle.net/YU.REPOSITORY/31590http://dx.doi.org/10.7567/JJAP.53.08NC04
ISSN
0021-4922
Appears in Collections:
중앙도서관 > rims journal
공과대학 > 화학공학부 > Articles
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