Temperature Dependence of the Band Gap and Exciton Photoreflectance in Layered Gallium Telluride.

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Tác giả: Yan-Ruei Chen, Hien Giap, Chien-Chih Lai, Yuan-Ron Ma, Duc Huy Nguyen, Duy Van Pham, Giang Thi Phan, Denny Pratama Hasibuan, Ji-Lin Shen, Clara Sinta Saragih, Carlo C Sta Maria, Maw-Kuen Wu, Po-Hung Wu

Ngôn ngữ: eng

Ký hiệu phân loại: 594.38 *Pulmonata

Thông tin xuất bản: United States : ACS applied materials & interfaces , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 62784

Among Group III-A metal monochalcogenides, gallium telluride (GaTe) is one of the less studied materials in terms of applications and optical characterization. For the temperature dependence of the energy transitions in GaTe, photoluminescence (PL) spectroscopy is commonly used, and photomodulated reflectance (PR) is yet to be reported. In this work, layered monoclinic GaTe single crystals were synthesized by the Bridgman technique and used for the investigation of the conduction band (CB) edge and free-exciton (FX) state transitions using PR spectroscopy. Both energy transitions (i.e., absorption and emission) were present at room temperature at 1.656 and 1.647 eV for the CB edge transition (≡
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