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Title: Iron pyrite thin film counter electrodes for dye-sensitized solar cells : high efficiency for iodine and cobalt redox electrolyte cells
Authors: Loc, Nguyen Huu
Shukla, Sudhanshu
Boix, Pablo Perez
Koh, Teck Ming
Prabhakar, Rajiv Ramanujam
Hemant Kumar, Mulmudi
Zhang, Jun
Chen, Shi
Ng, Chin Fan
Huan, Cheng Hon Alfred
Mathews, Nripan
Sritharan, Thirumany
Xiong, Qihua
Keywords: DRNTU::Engineering::Materials::Microelectronics and semiconductor materials::Thin films
Issue Date: 2014
Source: Shukla, S., Loc, N. H., Boix, P. P., Koh, T. M., Prabhakar, R. R., Mulmudi, H. K., et al. (2014). Iron pyrite thin film counter electrodes for dye-sensitized solar cells : high efficiency for iodine and cobalt redox electrolyte cells. ACS nano, 8(10), 10597-10605.
Series/Report no.: ACS nano
Abstract: Iron pyrite has been the material of interest in the solar community due to its optical properties and abundance. However, the progress is marred due to the lack of control on the surface and intrinsic chemistry of pyrite. In this report, we show iron pyrite as an efficient counter electrode (CE) material alternative to the conventional Pt and poly(3,4-ethylenedioxythiophene (PEDOT) CEs in dye-sensitized solar cells (DSSCs). Pyrite film CEs prepared by spray pyrolysis are utilized in I3–/I– and Co(III)/Co(II) electrolyte-mediated DSSCs. From cyclic voltammetry and impedance spectroscopy studies, the catalytic activity is found to be comparable with that of Pt and PEDOT in I3–/I– and Co(III)/Co(II) electrolyte, respectively. With the I3–/I– electrolyte, photoconversion efficiency is found to be 8.0% for the pyrite CE and 7.5% for Pt, whereas with Co(III)/Co(II) redox DSSCs, efficiency is found to be the same for both pyrite and PEDOT (6.3%). The excellent performance of the pyrite CE in both the systems makes it a distinctive choice among the various CE materials studied.
ISSN: 1936-0851
DOI: 10.1021/nn5040982
Rights: © 2014 American Chemical Society. This is the author created version of a work that has been peer reviewed and accepted for publication by ACS Nano, American Chemical Society. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
ERI@N Journal Articles
MSE Journal Articles
SPMS Journal Articles

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