Molecular design of donor-acceptor-type cruciform dyes for efficient dyes-sensitized solar cells

Title
Molecular design of donor-acceptor-type cruciform dyes for efficient dyes-sensitized solar cells
Author(s)
조민주[조민주]박성수[박성수]양유석[양유석]김재홍최동훈[최동훈]
Keywords
ORGANIC-DYES; TIO2 FILMS; CONJUGATION
Issue Date
201008
Publisher
ELSEVIER SCIENCE SA
Citation
SYNTHETIC METALS, v.160, no.15-16, pp.1754 - 1760
Abstract
Novel donor-acceptor (D-A) type cruciform dyes were synthesized for use in a dye-sensitized solar cell. The geometries and electronic structures of the dyes were designed by the results of density functional theory (DFT) calculations. Two phenothiazine units in these dyes act as electron donors, while two cyanoacrylic acid groups act as electron acceptors. The solubility of these compounds is increased because of the presence of the hexyl groups in the phenothiazine rings. The photovoltaic properties of 14D-25A and 12A-45D were measured to identify the effects of the dye having two electron donors and two electron acceptors on the DSSC performance. The 12A-45D dye showed a power conversion efficiency of 4.5% under AM 1.5 illumination (100 mW cm(-2)) in an photoactive area of 0.42 cm(2). short circuit current density of 10.8 mA cm(-2), open circuit photovoltage of 0.65 V and a fill factor of 64%. (C) 2010 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/23814http://dx.doi.org/10.1016/j.synthmet.2010.06.013
ISSN
0379-6779
Appears in Collections:
공과대학 > 화학공학부 > Articles
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