244 0

Stepwise cosensitization for high efficiency dye-sensitized solar cells utilizing solid-state polymer electrolytes

Title
Stepwise cosensitization for high efficiency dye-sensitized solar cells utilizing solid-state polymer electrolytes
Author
강용수
Keywords
Solid-state polymer electrolytes; Stepwise cosensitization; Dye-sensitized solar cells; Light harvesting; Charge collection
Issue Date
2015-12
Publisher
ELSEVIER SCIENCE BV
Citation
MATERIALS LETTERS, v. 161, Page. 435-438
Abstract
Mesoporous TiO2 surface engineering is a field to be still advanced toward highly efficient dye-sensitized solar cells (DSCs) utilizing solid-state polymer electrolytes. Herein, a facile and stepwise cosensitization method is applied for ruthenium C106 dye and organic D131 dye. After the C106 dyes were adsorbed, D131 dyes were subsequently coadsorbed onto empty sites of the mesoporous TiO2 surface without desorption of the C106 dyes, and their amount was controlled by varying the concentration of the D131 dye solution. At the optimal concentration of the D131 dye solution, a remarkable energy conversion efficiency of 8.4% was attained under 1 sun illumination conditions, as a result of a noticeable rise in photocurrent density. According to the photovoltaic characterization, both the light harvesting and the charge collection efficiencies for DSCs prepared by the stepwise cosensitization process were greatly superior to those of individual C106 or D131 dyes. (C) 2015 Elsevier B.V. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S0167577X15305309?via%3Dihubhttp://hdl.handle.net/20.500.11754/29540
ISSN
0167-577X; 1873-4979
DOI
10.1016/j.matlet.2015.09.019
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > 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