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

Issei Suzuki,Zexin Lin,Sakiko Kawanishi,Kiyohisa Tanaka,Yoshitaro Nose,Takahisa Omata,Shin-Ichiro Tanaka

PHYSICAL CHEMISTRY CHEMICAL PHYSICS（2022）

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摘要

Valence band dispersions of single-crystalline SnS1-xSex 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.

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