本文選題：發(fā)光材料 + 紅光發(fā)射��； 參考：《無機(jī)化學(xué)學(xué)報(bào)》2017年05期

【摘要】：采用熔融冷卻法制備了銪摻雜的硼鉍鈣玻璃。研究了不同硼鉍比(n_B/n_(Bi))和鈣離子濃度條件下的密度、摩爾體積、折射率等物理性質(zhì),分析了玻璃的結(jié)構(gòu)、光學(xué)性質(zhì)和熱穩(wěn)定性。實(shí)驗(yàn)結(jié)果表明,Eu~(3+)較好的熔融于玻璃中,形成發(fā)光中心,在465 nm藍(lán)光激發(fā)下,613 nm處有較為強(qiáng)烈的發(fā)射,光譜強(qiáng)度值隨nB/nBi變化不明顯,但隨Ca O濃度升高而逐漸遞減。玻璃結(jié)構(gòu)總體呈現(xiàn)非晶態(tài),對(duì)稱性相對(duì)較低,結(jié)構(gòu)致密程度和對(duì)稱性均隨nB/nBi的降低而降低,隨CaO濃度的升高而升高。玻璃結(jié)構(gòu)主要組成為[BO_3]三角體、[BiO_3]三角體,[BO4]四面體和[BiO_6]八面體,不存在[BO_3]組成的硼六元環(huán)。研究結(jié)果表明,此系列硼鉍鈣玻璃能有效匹配藍(lán)光芯片發(fā)射紅光,且具有熔點(diǎn)低、熱穩(wěn)定較好、折射率相對(duì)適宜的特點(diǎn)。
[Abstract]:The boron bismuth calcium glass doped with europium was prepared by melt cooling method. The physical properties of density, molar volume and refractive index at different ratios of bismuth boron and calcium ions were studied. The structure, optical properties and thermal stability of glass were analyzed. The experimental results show that EU ~ (3) melts well in glass to form luminescent centers, and there is a strong emission at 613 nm under the excitation of 465nm blue light. The spectral intensity does not change obviously with NB / nBi, but decreases gradually with the increase of Cao concentration. The glass structure is amorphous, and the symmetry is relatively low. The density and symmetry of glass structure decrease with the decrease of NB / nBi, and increase with the increase of Cao concentration. The glass structure is mainly composed of [Bos _ 3] triangle, [Bio _ s _ 3] triangle, [BO _ 4] tetrahedron and [Bio _ 6] octahedron. The results show that the series of boron bismuth calcium glasses can effectively match the red light emitted by blue light chips, and have the characteristics of low melting point, good thermal stability and relatively suitable refractive index.
【作者單位】： 江西理工大學(xué)材料科學(xué)與工程學(xué)院;江西理工大學(xué)冶金與化學(xué)工程學(xué)院;
【基金】：江西省基金項(xiàng)目(No.GJJ150636,2014ZBAB206006) 江西理工大學(xué)優(yōu)秀博士基金項(xiàng)目(No.YB2016008)資助
【分類號(hào)】：TQ171.7

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