Abstract—

(Y_1–xPr_x)₂O₂Se solid solutions with х = 0.004, 0.008, 0.010, 0.012, and 0.020 have been prepared from oxides by ampule synthesis. We have measured their excitation spectra at λ_em = 514 nm and their photoluminescence and quantum yield spectra at λ_ex = 463 nm (T = 300 K). Comparing their emission intensities at wavelengths of 514 (³P₀ → ³H₄ transition) and 670 nm (³P₀ → ³F₂ transition), we have determined the optimal dopant concentration (x = 0.01), at which the quantum yield has a maximum, reaching 3%.

中文翻译：

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(Y1–xPrx)2O2Se 固溶体中光致发光的浓度猝灭和量子产率

摘要——

(Y _{1– x} Pr _x ) ₂ O ₂ Se 固溶体х = 0.004、0.008、0.010、0.012 和 0.020 已通过安瓿合成由氧化物制备。我们测量了它们在 λ _em = 514 nm 处的激发光谱以及它们在 λ _ex = 463 nm ( T = 300 K)处的光致发光和量子产率光谱。比较它们在 514 ( ³ P ₀ → ³ H ₄跃迁) 和 670 nm ( ³ P ₀ → ³ F ₂跃迁)波长下的发射强度过渡），我们已经确定了最佳掺杂浓度（x = 0.01），此时量子产率最大，达到 3%。