Article (Scientific journals)
Synthesis, Characterization, and Electronic Structure of Single-Crystal SnS, Sn2S3, and SnS2
Burton, Lee A.; Colombara, Diego; Abellon, Ruben D. et al.
2013In Chemistry of Materials, 25 (24), p. 4908-4916
Peer reviewed
 

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Keywords :
Semiconductor; Earth-abundant; Photovoltaic; Tin sulfide; Workfunction
Abstract :
[en] Tin sulfide is being widely investigated as an earth-abundant light harvesting material, but recorded efficiencies for SnS fall far below theoretical limits. We describe the synthesis and characterization of the single-crystal tin sulfides (SnS, SnS2, and Sn2S3) through chemical vapor transport, and combine electronic structure calculations with time-resolved microwave conductivity measurements to shed light on the underlying electrical properties of each material. We show that the coexistence of the Sn(II) and Sn(IV) oxidation states would limit the performance of SnS in photovoltaic devices due to the valence band alignment of the respective phases and the ''asymmetry'' in the underlying point defect behavior. Furthermore, our results suggest that Sn2S3, in addition to SnS, is a candidate material for low-cost thin-film solar cells.
Disciplines :
Chemistry
Author, co-author :
Burton, Lee A.;  University of Bath > Department of Chemistry > Centre for Sustainable Chemical Technologies
Colombara, Diego ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Abellon, Ruben D.;  Delft University of Technology > Department of Chemical Engineering > Opto-Electronic Materials Section
Grozema, Ferdinand C.;  Delft University of Technology > Department of Chemical Engineering > Opto-Electronic Materials Section
Peter, Laurence M.;  University of Bath > Department of Chemistry
Savenije, Tom J.;  Delft University of Technology > Department of Chemical Engineering > Opto-Electronic Materials Section
Dennler, Gilles;  IMRA Europe SAS, Sophia Antipolis Cedex, France > Department Energy and the Environment
Walsh, Aron;  University of Bath > Department of Chemistry > Centre for Sustainable Chemical Technologies
Language :
English
Title :
Synthesis, Characterization, and Electronic Structure of Single-Crystal SnS, Sn2S3, and SnS2
Publication date :
27 November 2013
Journal title :
Chemistry of Materials
ISSN :
0897-4756
Publisher :
American Chemical Society, Washington, United States - District of Columbia
Volume :
25
Issue :
24
Pages :
4908-4916
Peer reviewed :
Peer reviewed
Funders :
Royal Society University Research Fellowship
EPSRC Grants No. EP/G03768X/1, EP/J017361/1 and EP/I019693/1
EPSRC Grant No. EP/F029624/1 (SuperGen: Photovoltaic Materials for the 21st Century)
EPSRC Grant No. EP/F067496 (HPC Materials Chemistry Consortium)
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