Photo-Gain Effect in κ-Ga2O3 UV-C Photoresistors Induced by Trapping of Photogenerated Holes
Academic Article
Publication Date:
2025
Short description:
Photo-Gain Effect in κ-Ga2O3 UV-C Photoresistors Induced by Trapping of Photogenerated Holes / Asteriti, A.; Verzellesi, G.; Sozzi, G.; Baraldi, A.; Mazzolini, P.; Moumen, A.; Parisini, A.; Pavesi, M.; Bosi, M.; Mosca, R.; Seravalli, L.; Fornari, R.. - In: PHYSICA STATUS SOLIDI B-BASIC RESEARCH. - ISSN 0370-1972. - (2025), pp. 1-6. [10.1002/pssb.202400581]
abstract:
The "photo-gain effect" amplifying the DC photocurrent of kappa-Ga2O3 UV-C photoresistors is analyzed by means of 2D numerical simulations and linked to the capture of photogenerated holes by deep donor levels, probably associated with oxygen vacancies. The resulting ionization of the deep donors leads to an increase in the electron density, hence to enhanced conductivity under illumination.
Iris type:
Articolo su rivista
Keywords:
deep traps; gallium oxide; photodetectors; photo-gain
List of contributors:
Asteriti, A.; Verzellesi, G.; Sozzi, G.; Baraldi, A.; Mazzolini, P.; Moumen, A.; Parisini, A.; Pavesi, M.; Bosi, M.; Mosca, R.; Seravalli, L.; Fornari, R.
Published in: