Photoluminescence of erbium in polycrystalline ceramics and in crystalline film of erbium oxide

Assignments of the Raman modes of monoclinic erbium oxide

“…As mentioned earlier, Er 3þ exhibits abundant absorption and radiation bands in the visible and IR regions. [3][4][5][18][19][20][21][22] When the excitation wavelength is near the absorption bands of Er 3þ , the excited spectrum may contain Raman vibrational signals and photoluminescent signals; thus, unambiguously identifying Raman modes is difficult. In addition, pure B-Er 2 O 3 is not available in single-crystal form; thus, its vibrational modes cannot be assigned through polarized Raman scattering spectroscopy.…”

Persistent luminescence upconversion for Er2O3 under 975nm excitation in vacuum

“…The IR emission of Er3+ has previously been reported in Y2O3:Er3+ [11], Er2O3 [11,12] and polycrystalline ceramics [10]. The IR emission has also been excited by a 10.6 μm CO2 laser [13].…”

“…In the case of Er2O3, the assignment of broadband white emission under near-IR laser diode excitation to charge transfer emission can be ruled out because the charge transfer absorption band is calculated to be at 169 nm (7.3 eV) using the data of Dorenbos [8] and this lies above the conduction band (estimated between 4.9-5.4 eV [9] and 5.7 eV [10]). The IR emission of Er3+ has previously been reported in Y2O3:Er3+ [11], Er2O3 [11,12] and polycrystalline ceramics [10].…”

Optical polarizability of erbium-oxygen complexes in sol-gel-based silica films

“…The average and ±standard deviation value is n ∞ = 1.923 ± 0.026. For thin film forms of Er 2 O 3 , reported results for n(λ) obtain A 0 = 2.94 and λ 0 = 138 nm (amorphous film [46]), A 0 = 2.49 and λ 0 = 128 nm (polycrystalline film [47]), A 0 = 2.65 and λ 0 = 150 nm (amorphous film [48]), and A 0 = 2.32 and λ 0 ≈ 128 nm estimated here from n(λ) curves for Er films oxidized at 700 • C and 800 • C [49]. Averaging the film data for A 0 yields the result n ∞ = 1.896 ± 0.069.…”