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Large area growth of MoTe2 films as high performance counter electrodes for dye-sensitized solar cells

Title
Large area growth of MoTe2 films as high performance counter electrodes for dye-sensitized solar cells
Author
Supriya A. Patil
Keywords
HIGH CATALYTIC-ACTIVITY; LOW-COST
Issue Date
2017-12
Publisher
NATURE PUBLISHING GROUP
Citation
SCIENTIFIC REPORTS, v. 8, Article no. 29
Abstract
A cost effective and efficient alternative counter electrode (CE) to replace commercially existing platinum (Pt)-based CEs for dye-sensitized solar cells (DSSCs) is necessary to make DSSCs competitive. Herein, we report the large-area growth of molybdenum telluride (MoTe2) thin films by sputteringchemical vapor deposition (CVD) on conductive glass substrates for Pt-free CEs of DSSCs. Cyclic voltammetry (CV), Tafel curve analysis, and electrochemical impedance spectroscopy (EIS) results showed that the as-synthesized MoTe2 exhibited good electrocatalytic properties and a low charge transfer resistance at the electrolyte-electrode interface. The optimized MoTe2 CE revealed a high power conversion efficiency of 7.25% under a simulated solar illumination of 100 mW cm(-2) (AM 1.5), which was comparable to the 8.15% observed for a DSSC with a Pt CE. The low cost and good electrocatalytic properties of MoTe2 thin films make them as an alternative CE for DSSCs.
URI
https://www.nature.com/articles/s41598-017-18067-6https://repository.hanyang.ac.kr/handle/20.500.11754/116750
ISSN
2045-2322
DOI
10.1038/s41598-017-18067-6
Appears in Collections:
RESEARCH INSTITUTE[S](부설연구소) > ETC
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