Investigation of hybrid InSb and GaSb quantum nanostructures
| Autor: | Unchittha Prasatsap, Suwat Sopitpan, Chanchana Thanachayanont, Somchai Ratanathammaphan, Noppadon Nuntawong, Alangsan Sangpho, Suwit Kiravittaya, Thanadul Korkerdsantisuk, Visittapong Yordsri, Songphol Kanjanachuchai, Somsak Panyakeow, Supachok Thainoi, Aniwat Tandaechanurat, Nutthaphat Thornyanadacha, Zon |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Photoluminescence Materials science Infrared business.industry Heterojunction 02 engineering and technology Photovoltaic effect 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Surfaces Coatings and Films Electronic Optical and Magnetic Materials symbols.namesake 0103 physical sciences symbols Optoelectronics Electrical and Electronic Engineering 0210 nano-technology business Raman spectroscopy Spectroscopy Ohmic contact Molecular beam epitaxy |
| Zdroj: | Microelectronic Engineering. 237:111494 |
| ISSN: | 0167-9317 |
| Popis: | Hybrid InSb and GaSb nanostructures (NSs) with different repeated cycles; one, two and four, are inserted in double AlGaAs/GaAs heterostructures by molecular beam epitaxy in Stranski-Krastanov mode. Their morphologies and cross-sectional structure are inspected by atomic force microscopy and transmission electron microscopy. Raman spectroscopy reveals the effect of strains produced by the presence of InSb and GaSb NSs. Optical properties of hybrid InSb and GaSb NSs are investigated by power- and temperature-dependent photoluminescence (PL) spectroscopy. Broad and strong PL emission of hybrid NSs are observed from 20 K to room temperature. The Ohmic contacts are performed by gold alloys metallization and gold bonding on the p-n heterojunction devices for electrical current density-voltage characterization of the devices. Photovoltaic effect of hybrid quantum NS-devices with different NS-cycles are tested and recorded under various illumination intensities. Spectral response at long wavelength in infrared region beyond 1 μm originated from the presence of hybrid NSs is detected. |
| Databáze: | OpenAIRE |
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