Direct evaluation of hole effective mass of SnS-SnSe solid solutions with ARPES measurement

Valence band dispersions of single-crystalline SnS 1− x Se x solid solutions were observed by angle-resolved photoemission spectroscopy (ARPES). The hole effective masses, crucial factors in determining thermoelectric properties, were directly evaluated. They decrease slightly with increasing Se con...

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Published inPhysical chemistry chemical physics : PCCP Vol. 24; no. 2; pp. 634 - 638
Main Authors Suzuki, Issei, Lin, Zexin, Kawanishi, Sakiko, Tanaka, Kiyohisa, Nose, Yoshitaro, Omata, Takahisa, Tanaka, Shin-Ichiro
Format Journal Article
LanguageEnglish
Published England Royal Society of Chemistry 04.01.2022
Subjects
Composition
Evaluation
Photoelectric emission
Single crystals
Solid solutions
Valence band
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Summary:Valence band dispersions of single-crystalline SnS 1− x Se x solid solutions were observed by angle-resolved photoemission spectroscopy (ARPES). The hole effective masses, crucial factors in determining thermoelectric properties, were directly evaluated. They decrease slightly with increasing Se content in the low Se composition range but sharply in the high Se composition range. The hole effective masses of SnS-SnSe solid solutions, crucial factors for their thermoelectric properties, are directly evaluated by ARPES measurement. They decrease slightly with increasing Se in the low Se range but sharply in the high Se range.
Bibliography:x
Electronic supplementary information (ESI) available: Materials preparation, cleanness of the sample surfaces, XPS spectra, dispersion along
k
10.1039/d1cp04553a
direction, and linearly-plotted dispersion images of VBM1. See DOI
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content type line 23
ISSN:1463-9076
1463-9084
DOI:10.1039/d1cp04553a