Figure 2 | ML properties of Al₂O₃ :Cr³⁺ and enhancement strategies. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Figure 2 | ML properties of Al₂O₃ :Cr³⁺ and enhancement strategies.

Caption

Figure 2 | ML properties of Al2O3:Cr3+ and enhancement strategies. a ML spectra of Al2O3:xCr3+ samples (x = 0.01, 0.1, 0.5, 1, 2 and 4 %) under an applied force of 30 N. b ML spectra of Al2O3:1%Cr3+ samples annealed at different temperatures (1573–1923 K) under an applied force of 30 N. c ML spectra of Al2O3:1%Cr3+ under varying applied loads ranging from 5 to 35 N. d Reported ML spectra of Cr3+-doped material systems and comparison of their integrated ML intensities. e ML repeatability of Al2O3:Cr3+ under 7000 loading cycles at 10 N without any pre-irradiation. f ML spectra of Al2O3/Ga2O3:Cr3+ heterojunctions with varying Al2O3 to Ga2O3 ratios, indicating compositional tuning effects on emission characteristics. g Integrated ML intensity of Al2O3/Ga2O3:Cr3+ heterojunctions with varying Al2O3 to Ga2O3 ratios.

Credit

Dengfeng Peng et al.

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