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Growth of a WSe2/W counter electrode by sputtering and selenization annealing for high-efficiency dye-sensitized solar cells

Title
Growth of a WSe2/W counter electrode by sputtering and selenization annealing for high-efficiency dye-sensitized solar cells
Author
Supriya A. Patil
Keywords
WSe2; Sputtering; Counter electrode; DSSC
Issue Date
2017-01
Publisher
ELSEVIER SCIENCE BV
Citation
APPLIED SURFACE SCIENCE, v. 406, page. 84-90
Abstract
A chemically active and stable WSe2/W structure was prepared by sputtering and selenization annealing in order to replace a high-cost Pt counter electrode in dye-sensitized solar cells. The CV, EIS analysis, and Tafel curve measurements indicated that the WSe2/W electrode possesses high conductivity, low charge transfer resistance at the electrolyte-electrode interface, good electrocatalytic activity, and fast reaction kinetics for the a iodide/triiodide redox reaction, which are due to the synergistic effect of W and WSe2 in combination. The DSSC with a novel WSe2/W counter electrode achieved a high power conversion efficiency of 8.22% under standard light illumination, which is comparable to that with a platinum (Pt)-coated FTO electrode (8.20%). (C) 2017 Elsevier B.V. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0169433217304749?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/112477
ISSN
0169-4332; 1873-5584
DOI
10.1016/j.apsusc.2017.02.111
Appears in Collections:
RESEARCH INSTITUTE[S](부설연구소) > ETC
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