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Solvent influenced synthesis of single-phase SnS2 nanosheets for solution-processed photodiode fabrication

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Abstract

The effect of variant high boiling point solvent combinations in the synthesis and photo-sensing characteristics of tin disulfide (SnS2) thin nanosheets were investigated. Solvent dependent single-phase formation was observed by powder X-ray diffractometry (XRD), and results were verified with Raman spectroscopy measurements. Particles synthesized with only oleylamine show a mixed-phase, and two other solvent combinations such as oleylamine + oleic acid + n-octadecene, and oleylamine + oleic acid, show single-phase 2H–SnS2, without phase contamination. Scanning and transmission electron microscopes were used to verify the orbicular and hexagonal shape of synthesized SnS2 nanosheets. Well-characterized samples were employed to fabricate heterojunction photosensitive diodes using a p-type silicon substrate. Light-responsive measurement results of fabricated diodes indicate that the oleylamine + oleic acid synthesized sample show very high light-sensitivity, and the fill factor value of a fabricated diode is closer to the ideal diode.

Graphical abstract: Solvent influenced synthesis of single-phase SnS2 nanosheets for solution-processed photodiode fabrication

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Article information


Submitted
08 Sep 2019
Accepted
08 Dec 2019
First published
09 Dec 2019

CrystEngComm, 2020, Advance Article
Article type
Paper

Solvent influenced synthesis of single-phase SnS2 nanosheets for solution-processed photodiode fabrication

D. Thangaraju, R. Marnadu, V. Santhana, A. Durairajan, P. Kathirvel, J. Chandrasekaran, S. Jayakumar, M. A. Valente and D. C. Greenidge, CrystEngComm, 2020, Advance Article , DOI: 10.1039/C9CE01417A

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