6533b873fe1ef96bd12d4b3e

RESEARCH PRODUCT

Spectral and kinetic characteristics of pyroelectric luminescence in LiGaO2

V. KorsaksA. TrukhinLaima TrinklerB. BerzinaMitch M.c. ChouJanis CipaChu-an Li

subject

Materials scienceOrganic Chemistry02 engineering and technologyElectronNanosecond010402 general chemistry021001 nanoscience & nanotechnologyKinetic energy01 natural sciencesAtomic and Molecular Physics and Optics0104 chemical sciencesElectronic Optical and Magnetic MaterialsPyroelectricityInorganic ChemistryCrystalSpontaneous emissionDirect and indirect band gapsElectrical and Electronic EngineeringPhysical and Theoretical ChemistryAtomic physics0210 nano-technologyLuminescenceSpectroscopy

description

Abstract Pyroelectric luminescence was observed in noncentrosymmetrical crystal LiGaO2 with the direct band gap around 6 eV. For the first time spectral and kinetic characteristics of pyroelectric luminescence were obtained. The temporal structure of the PEL signal was determined as a sequence of pulses with duration not longer than several nanoseconds. This allowed proposing of the luminescence mechanism: in vacuum conditions in LiGaO2 crystal pyroelectric luminescence occurs inside the sample due to radiative recombination of electrons with the positively charged intrinsic luminescence centres.

yearjournalcountryeditionlanguage
2019-08-01Optical Materials
https://doi.org/10.1016/j.optmat.2019.05.014