Effect of solvent on dye-adsorption process and photovoltaic properties of dendritic organic dye on TiO2 electrode of dye-sensitized solar cells

Title
Effect of solvent on dye-adsorption process and photovoltaic properties of dendritic organic dye on TiO2 electrode of dye-sensitized solar cells
Author(s)
전병철김명석조민주[조민주]최동훈[최동훈]안광순김재홍
Keywords
HIGH-EFFICIENCY; COUMARIN DYES; FILMS; PERFORMANCE; VOLTAGE; RAMAN
Issue Date
201402
Publisher
ELSEVIER SCIENCE SA
Citation
SYNTHETIC METALS, v.188, pp.130 - 135
Abstract
Correlation between the photovoltaic activity and adsorption characteristics of a TiO2 electrode coated with an organo-dendritic dye containing three chromophores in one molecule ((2E,2'E,2"E)-3,3',3"-(10,10',10"-(6,6',6"-(4,4',4"-(ethane-1,1,1-triyl)tris(benzene-4,1-diyl))tris (oxy)tris(hexane-6,1-diyl))tris(10H-phenothiazine-10,3-diyl)tris(2-cyanoacrylic acid), triple-PTZ) was investigated by applying it in dye-sensitized solar cells (DSSCs). The photovoltaic performance of the DSSCs utilizing the Triple-PTZ dyes varied based on the solvent conditions employed for adsorbing the dye on the TiO2 electrode surface. Aggregation of the Triple-PTZ dyes on the electrode surface was induced in the poor solvent system, with a consequent increase in the total amount of Triple-PTZ dye, which is directly adsorbed on the TiO2 surface. However, incomplete tethering of the Triple-PTZ dye molecules onto the TiO2 surface substantially reduced the short-circuit current (J(sc)). A good solvent promoted uniform adsorption of the Triple-PTZ dye on the TiO2 surface, with a consequent enhancement of the power conversion efficiency (PCE) of the fabricated DSSCs up to 4.90%, which is much higher than the PCE of 1.93% obtained from the DSSC fabricated using the poor solvent system. The correlation between the adsorption properties of the photosensitizing Triple-PTZ dyes on the TiO2 electrode and the photovoltaic performance was intensively investigated with the help of ATR-FT-IR spectroscopy, the incident photon-to-electron conversion efficiency (IPCE), and electrochemical impedance spectroscopy (EIS) analysis. (C) 2013 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/33265http://dx.doi.org/10.1016/j.synthmet.2013.12.006
ISSN
0379-6779
Appears in Collections:
중앙도서관 > rims journal
공과대학 > 화학공학부 > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE