Synthesis and photoelectric properties of visible sensitive SnS2-linked graphene composites

Title
Synthesis and photoelectric properties of visible sensitive SnS2-linked graphene composites
Author(s)
강미숙곽병섭이호정
Keywords
LITHIUM-ION BATTERIES; LIGHT PHOTOCATALYTIC ACTIVITY; SOLAR-CELLS; SNS2 NANOFLAKES; ANODE MATERIALS; TIN DISULFIDE; CONVERSION EFFICIENCY; OXIDE NANOCOMPOSITES; ELECTRON-TRANSPORT; CARBON NANOTUBES
Issue Date
201411
Publisher
ELSEVIER SCIENCE SA
Citation
CHEMICAL ENGINEERING JOURNAL, v.255, pp.613 - 622
Abstract
SnS2-linked graphene (SnS2-rGO) was synthesized from graphene and SnCl2 under mild reducing conditions. X-ray diffraction and transmission electron microscopy of the SnS2-rGO samples confirmed the presence of SnS2 nanoplates that were highly dispersed and well linked onto the thin layered graphene. The SnS2-rGO was introduced as a working electrode into dye-sensitized solar cells (DSSCs) because of its good transparency and electric conductivity. The SnS2-rGO was mixed with p-25 TiO2 powders to make an anode electrode of DSSCs. The graphene and SnS2 exhibited a synergistic effect. Compared to p-25 TiO2-double layered DSSC, the SnS2-rGO-TiO2(upper)/TiO2(bottom) double layered anode film enhanced the energy conversion efficiency considerably; the efficiency for the 1.0 wt.% SnS2-rGO-TiO2(top)/TiO2 (bottom)-DSSC was approximately 5.47%. A potential energy model for electron transfer among TiO2, SnS2-rGO-TiO2, and dye was suggested on the basis of ultraviolet visible spectroscopy and cyclic voltammetry which showed a good relationship with the photovoltaic efficiency. (C) 2014 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/30522http://dx.doi.org/10.1016/j.cej.2014.05.103
ISSN
1385-8947
Appears in Collections:
이과대학 > 화학생화학부 > Articles
문과대학 > 중국언어문화학과 > Articles
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