Cited 24 time in webofscience Cited 26 time in scopus

Efficient Nanostructured TiO2/SnS Heterojunction Solar Cells

Title
Efficient Nanostructured TiO2/SnS Heterojunction Solar Cells
Authors
Yun, Hyun-SungPark, Byung-wookChoi, Yong ChanIm, JinoShin, Tae JooSeok, Sang Il
DGIST Authors
Choi, Yong Chan
Issue Date
2019-09
Citation
Advanced Energy Materials, 9(35)
Type
Article
Article Type
Article
Author Keywords
hot carrier Ar gasrapid formation techniqueSnSsolution processingtin chalcogenide
Keywords
ATOMIC LAYER DEPOSITIONSNS
ISSN
1614-6832
Abstract
Tin sulfide (SnS) is one of the most promising solar cell materials, as it is abundant, environment friendly, available at low cost, and offers long-term stability. However, the highest efficiency of the SnS solar cell reported so far remains at 4.36% even using the expensive atomic layer deposition process. This study reports on the fabrication of SnS solar cells by a solution process that employs rapid thermal treatment for few seconds under Ar gas flow after spin-coating a precursor solution of SnCl2 and thiourea dissolved in dimethylformamide onto a nanostructured thin TiO2 electrode. The best-performing cell exhibits power conversion efficiency (PCE) of 3.8% under 1 sun radiation conditions (AM1.5G). Moreover, secondary treatment using SnCl2 results in a significant improvement of 4.8% in PCE, which is one of the highest efficiencies among SnS-based solar cells, especially with TiO2 electrodes. The thin film properties of SnS after SnCl2 secondary treatment are analyzed using grazing-incidence wide-angle X-ray scattering, and high-resolution transmittance electron microscopy. © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
URI
http://hdl.handle.net/20.500.11750/10643
DOI
10.1002/aenm.201901343
Publisher
Wiley-VCH Verlag
Related Researcher
  • Author Choi, Yong Chan  
  • Research Interests Solar Cells; Chalcohalides; chalcohalides; sulfides; selenides
Files:
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Collection:
Division of Energy Technology1. Journal Articles


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