CAJ | 학술논문

用熔体淬冷法在空气中制备了稀土(Tm,Dy,Tb,Eu)离子单掺和共掺的硼硅酸盐发光玻璃.研究了制得玻璃的发射光谱和激发光谱特性.结果表明:Eu离子单掺玻璃的发射光谱中出现了Eu2+和Eu3+的特征发射带,证明在此玻璃系统中,有部分Eu3+转化为Eu2+.Eu3+→Eu2+的转化效率与玻璃基质中B2O3的含量和网络调整体的类型有关,并且Eu2+的发射峰随玻璃基质中碱土离子半径的增大而出现红移.Eu/Dy和Tm/Tb/Eu共掺的硼硅酸盐玻璃的发射光谱中出现蓝、黄/绿、红发射带.这些发射带的复合可以使玻璃在紫外光激发下产生白光,并且各发射带的强度比例可以通过改变玻璃基质的组成来调节,表明所制备的稀土离子掺杂硼硅酸盐发光玻璃有可能取代荧光粉应用于制备白光发光器件.
용용체쉬랭법재공기중제비료희토(Tm,Dy,Tb,Eu)리자단참화공참적붕규산염발광파리.연구료제득파리적발사광보화격발광보특성.결과표명:Eu리자단참파리적발사광보중출현료Eu2+화Eu3+적특정발사대,증명재차파리계통중,유부분Eu3+전화위Eu2+.Eu3+→Eu2+적전화효솔여파리기질중B2O3적함량화망락조정체적류형유관,병차Eu2+적발사봉수파리기질중감토리자반경적증대이출현홍이.Eu/Dy화Tm/Tb/Eu공참적붕규산염파리적발사광보중출현람、황/록、홍발사대.저사발사대적복합가이사파리재자외광격발하산생백광,병차각발사대적강도비례가이통과개변파리기질적조성래조절,표명소제비적희토리자참잡붕규산염발광파리유가능취대형광분응용우제비백광발광기건.
Rare earth (Tm, Dy, Tb, Eu) ion mono- and co-doped borosilicate glasses were prepared in ambient atmosphere by melt quenching method. The characteristics of photoluminescence and excitation spectra of the obtained glasses were investigated. The results show that red and blue emission bands corresponding to Eu3+ and Eu2+ co-exist in the Eu ion mono-doped borosilicate glasses,indicating the conversion of Eu3+ to Eu2+ occurs in the glasses. The conversion efficiency is depending on the content of B2O3 and the type of network modifier. In addition, a red shift of the Eu2+ emission peak was observed with increasing ionic radius of alkaline earth cations. Blue, yellow/green and red emission bands were observed in the emission spectra of Eu/Dy and Tm/Tb/Eu co-doped borosilicate glasses. The combination of these emission bands allows the realization of white light when the glass is excited by ultraviolet light. Moreover, the relative emission intensity ratios of these emission peaks could be adjusted by changing the composition of glasses. This indicates that the obtained rare earth ions co-doped borosilicate glasses are potential fluorescent materials for developing white-light emitting diode devices.