The ultraviolet luminescence of β-galliumsesquioxide

Optical properties of LFZ grown β-Ga2O3:Eu3+ fibres

“…For such purposes, information about the optically active defects and their energy distribution inside the wide band gap host constitutes one important issue. Under above band gap excitation, ultraviolet, blue and green broad luminescence bands peaked near 3.4, 2.95 and 2.48 eV have been reported in undoped and doped ␤-Ga 2 O 3 single crystals [8][9][10]. The ultraviolet emission has been found to be sample independent, while deep level recombination has been found to be dependent on the chemical nature of the impurities and their content [10].…”

“…The ultraviolet emission has been found to be sample independent, while deep level recombination has been found to be dependent on the chemical nature of the impurities and their content [10]. Particularly, the ultraviolet recombination has been attributed to intrinsic luminescence and the blue band has been assigned to a donor-acceptor gallium-oxygen vacancy pair recombination [9,10].…”

Effect of initial pH on nanophosphor β-Ga2O3:Eu3+ prepared through sol–gel process

“…Five sharp excitation bands are related to 4f-4f excitations of Eu 3+ . The charge transfer band of nano-scaled b-Ga 2 O 3 :Eu 3+ shows the redshift from 280 to 305 nm, and the 4f-4f excitation bands show the redshift with difference of 5 nm in comparison with that of microscaled b-Ga 2 O 3 :Eu 3+ reported by many researchers [6][7][8][9][10].…”

“…The structure of b-Ga 2 O 3 is monoclinic with space group C 2/m . The luminescent properties of micro-sized b-Ga 2 O 3 synthesized through solid-state reaction were studied previously [7][8][9]. However, there are a few reports on nano-sized b-Ga 2 O 3 .…”

Optical Characteristics of Emission from ?-Ga2O3 with Group-VIb Ions

“…The luminescent properties of b-Ga 2 O 3 were studied previously [7][8][9][10], but the luminescence intensity of the self-activated luminescence center was very weak.…”