Ultraviolet photodetectors based on wide bandgap semiconductor: a review

Ding, Jijun; Zhao, Pengfei; Chen, Haixia; Fu, Haiwei

doi:10.1007/s00339-024-07501-y

Appl. Phys. A

2024

DOI: 10.1007/s00339-024-07501-y

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Ultraviolet photodetectors based on wide bandgap semiconductor: a review

Jijun Ding,

Pengfei Zhao,

Haixia Chen

et al.

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2024

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Cited by 2 publications

References 142 publications

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Structural, optical and mechanical properties of Cr doped β-Ga2O3 single crystals

Vijayakumar,

Ganesan,

Sarguna

et al. 2024

Appl. Phys. A

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Undoped and Cr doped β-Ga2O3 (100) single crystals are grown by optical floating zone method. The full width at half maximum of rocking curve is found to be 106 arc.sec for undoped β-Ga2O3 crystals whereas the 100 and 200 ppm of Cr doped β-Ga2O3 crystals display multiple rocking curves with large peak widths indicating the presence of structural defects. Raman measurements reveal broadening in the vibrational mode of ~ 350 cm− 1 with a shoulder peak indicating the Cr3+ dopants preferentially substitute for Ga3+ at the octahedral sites. Further, the Cr doped β-Ga2O3 crystals display strong optical absorption bands about 420 and 597 nm in the UV-Vis spectroscopy. Moreover, the observation of sharp characteristic photoluminescence emission lines at 690 and 697 nm also confirms the Cr substitution in the doped crystals. The indentation hardness increases nearly linear from 13.0 ± 0.6 to 17.9 ± 0.4 GPa whilst the indentation modulus decreases from 224.9 ± 21.4 to 202.4 ± 11.9 GPa upon Cr doping of 200 ppm in β-Ga2O3. The structural defects caused by the Cr doping interrupt the movement of indentation induced dislocations that results in the increase of hardness of the Cr doped β-Ga2O3 (100) single crystals.

show abstract

Structural, optical and mechanical properties of Cr doped β-Ga2O3 single crystals

Vijayakumar,

Ganesan,

Sarguna

et al. 2024

Appl. Phys. A

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UV-activated heterojunction in BaTiO3 decorated ZnO nanorods for faster and more efficient photodetector

F. Nazari,

Rajabi,

Z. Moshfegh

2024

Sensors and Actuators A: Physical

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Ultraviolet photodetectors based on wide bandgap semiconductor: a review

Cited by 2 publications

References 142 publications

Structural, optical and mechanical properties of Cr doped β-Ga2O3 single crystals

Structural, optical and mechanical properties of Cr doped β-Ga2O3 single crystals

UV-activated heterojunction in BaTiO3 decorated ZnO nanorods for faster and more efficient photodetector

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