High Performance of 3D Symmetric Flowerlike Sb2S3 Nanostructures in Dye‐Sensitized Solar Cells. Issue 44 (9th July 2018)

• Record Type: Journal Article
• Authors: Li, Xuemin; Bai, Jinwu; Zhou, Bo; Yuan, Xianfeng; Zhang, Xiao; Liu, Lu
• Is Part Of: Chemistry. Volume 24:Issue 44(2018)
• Page Start: 11444
• Page End: 11450
• Publication Date: 2018-07-09
• Subjects: antimony -- dyes/pigments -- electrochemistry -- semiconductors -- solar cells; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201802048
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: Antimony sulfide (Sb2 S3 ) is an important chalcogenide belonging to Group V–VI that is suitable for application as a photoelectric material in the fields of photocatalysis, photoconductive detectors, ion conductor materials, and solar energy conversion materials. Herein, a facile, one‐step hydrothermal method is used to synthesize a 3D, symmetric, flowerlike Sb2 S3 nanostructure. The structure was composed of numerous nanoneedles, which provided a large void fraction and specific surface area. Characteristic mesoporous structures of the samples contribute to excellent performance. If they were used as counter electrode materials in dye‐sensitized solar cells, the photoelectric conversion efficiency was as high as 7.12 %, whereas the photoelectric conversion efficiency of platinum was only 6.46 %. Furthermore, according to the results of cyclic voltammetry, electrochemical impedance spectra, and Tafel polarization testing, the obtained Sb2 S3 samples have better electrocatalytic activity and charge‐transfer ability than that of Pt, and thus, can be regarded as good substitutes for precious metals. Abstract : Built to perform : A facile, one‐step hydrothermal method is used to synthesize a 3D, symmetric, flowerlike Sb2 S3 nanostructure (see figure) for application as a photoelectric material. The structure is composed of numerous nanoneedles, which provided a large void fraction and specific surface area, and has better electrocatalytic activity and charge‐transfer ability than that of platinum.