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Tin(II) thiocyanate Sn(SCN)(2) as an ultrathin anode interlayer in organic photovoltaics
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Document Title
Tin(II) thiocyanate Sn(SCN)(2) as an ultrathin anode interlayer in organic photovoltaics
Author
Chaopaknam J, Wechwithayakhlung C, Nakajima H, Lertvanithphol T, Horprathum M, Sudyoadsuk T, Promarak V, Saeki A, Pattanasattayavong P
Name from Authors Collection
Scopus Author ID
57771557300
Affiliations
Vidyasirimedhi Institute of Science & Technology; National Science & Technology Development Agency - Thailand; National Electronics & Computer Technology Center (NECTEC); Vidyasirimedhi Institute of Science & Technology; Osaka University
Type
Article
Source Title
APPLIED PHYSICS LETTERS
ISSN
0003-6951
Year
2021
Volume
119
Issue
6
Page
-
Open Access
Green Accepted
Publisher
AMER INST PHYSICS
DOI
10.1063/5.0055649
Format
Abstract
We report the application of a coordination polymer semiconductor, tin(II) thiocyanate [Sn(SCN)(2)], as an ultrathin anode interlayer in organic photovoltaics (OPVs). Sub-10 nm layers of Sn(SCN)(2) with high smoothness and excellent transparency having an optical bandgap of 3.9 eV were deposited from an alcohol-based solution at room temperature without post-deposition annealing. Inserting Sn(SCN)(2) as an anode interlayer in polymer:fullerene OPVs drastically reduces the recombination loss due to the exciton-blocking energy levels of Sn(SCN)(2). At the optimum thickness of 7 nm, an average power conversion efficiency (PCE) of 7.6% and a maximum of 8.1% were obtained. The simple processability using common solvents gives Sn(SCN)(2) a distinct advantage over the more well-known copper(I) thiocyanate (CuSCN). The electronic and optical properties of Sn(SCN)(2) make it interesting for applications in large-area electronic devices.
Funding Sponsor
Thailand Science Research and Innovation (TSRI) [FRB640087]; Thailand Research Fund (TRF); Synchrotron Light Research Institute (SLRI), Thailand [TRG6280013]; Vidyasirimedhi Institute of Science and Technology (VISTEC)
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Publication Source
WOS