Issue 82, 2017, Issue in Progress

Vertical Bi2Se3 flake array as a Pt-free counter electrode for dye-sensitized solar cells

Abstract

In dye-sensitized solar cells (DSSCs), the catalytic activity and electrical conductivity of the counter electrodes (CEs) is of great importance for the increase of power conversion efficiency (PCE). Although Pt is the most widely used material for CEs of DSSCs, the high price and low abundance of Pt severely limit its application on a large scale and alternative materials are highly desired. In this paper, Bi2Se3 films of vertically aligned flake arrays fabricated by the vapor deposition technique are exploited as Pt-free CEs in DSSCs. Thanks to the excellent surface conductivity and the large number of catalytic active sites of Bi2Se3 flakes, the DSSC with a Bi2Se3 vertical flake array CE exhibited higher PCE than that with regular Pt CEs. This work provides an opportunity to develop practical Pt-free CEs which could facilitate the large-scale application of DSSCs.

Graphical abstract: Vertical Bi2Se3 flake array as a Pt-free counter electrode for dye-sensitized solar cells

Supplementary files

Article information

Article type
Paper
Submitted
06 May 2017
Accepted
02 Nov 2017
First published
08 Nov 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 51958-51964

Vertical Bi2Se3 flake array as a Pt-free counter electrode for dye-sensitized solar cells

M. Han, S. Lu, J. Ma, H. Xu, Y. Wang, X. Zhang and Y. Liu, RSC Adv., 2017, 7, 51958 DOI: 10.1039/C7RA05117D

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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