Surface Photovoltage Spectroscopy over Wide Time Domains for Semiconductors with Ultrawide Bandgap: Example of Gallium Oxide
نویسندگان
چکیده
A nonconventional approach is proposed for the measurement of surface photovoltage (SPV) signals over very wide ranges in photon energy and time. Regimes AC, DC, combined AC–DC measurements are defined applied characterization a β-Ga2O3 crystal by transient modulated SPV spectroscopy, spectroscopy mode Kelvin probe single-pulse transients from 10 ns to 1000 s with same electrode. Numerous electronic transitions distinguished depending on regime, time response history measurement. An accumulation negative charge at observed long times independent whether positive or before. The measuring opens new opportunities investigating properties semiconductors ultrawide bandgaps any other photoactive materials.
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ژورنال
عنوان ژورنال: Physica Status Solidi A-applications and Materials Science
سال: 2021
ISSN: ['1862-6300', '1862-6319']
DOI: https://doi.org/10.1002/pssa.202100167