中国科学技术大学学报
中國科學技術大學學報
중국과학기술대학학보
JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
2001年
1期
112-116,84
,共6页
张国春%傅佩珍%王国富%郭范%官向国
張國春%傅珮珍%王國富%郭範%官嚮國
장국춘%부패진%왕국부%곽범%관향국
Na3La2(BO3)3∶Tm3+%合成%Tm3+的发光特性%浓度淬灭
Na3La2(BO3)3∶Tm3+%閤成%Tm3+的髮光特性%濃度淬滅
Na3La2(BO3)3∶Tm3+%합성%Tm3+적발광특성%농도쉬멸
论文用固相反应法,合成了一系列掺Tm3+的Na3La2(BO3)3[Na3(La1-xTmx)2(BO3)3]发光体,X-射线粉末衍射数据分析表明它们属于正交晶系,空间群为Amm2.测量了红外光谱、荧光光谱,观察到在352nm、457nm处有较强的荧光发射,并研究了发光强度与Tm3+离子浓度(x)的关系,从而确定了Tm3+离子在Na3La2(BO3)3基质中发光的适宜浓度.
論文用固相反應法,閤成瞭一繫列摻Tm3+的Na3La2(BO3)3[Na3(La1-xTmx)2(BO3)3]髮光體,X-射線粉末衍射數據分析錶明它們屬于正交晶繫,空間群為Amm2.測量瞭紅外光譜、熒光光譜,觀察到在352nm、457nm處有較彊的熒光髮射,併研究瞭髮光彊度與Tm3+離子濃度(x)的關繫,從而確定瞭Tm3+離子在Na3La2(BO3)3基質中髮光的適宜濃度.
논문용고상반응법,합성료일계렬참Tm3+적Na3La2(BO3)3[Na3(La1-xTmx)2(BO3)3]발광체,X-사선분말연사수거분석표명타문속우정교정계,공간군위Amm2.측량료홍외광보、형광광보,관찰도재352nm、457nm처유교강적형광발사,병연구료발광강도여Tm3+리자농도(x)적관계,종이학정료Tm3+리자재Na3La2(BO3)3기질중발광적괄의농도.
In this paper, a series of Na3(La1-xTmx)2(BO3)3 (x=0~1.0) aresynthesized by using the high-temperature solid state reaction method at 700 ℃~950 ℃. X-ray diffraction analysis shows that both of them belong to orthorhombic systems, space group Amm2. The measurement of the infrared spectra indicates that the basic anionic group is the BO3-3 group. Furthermore, The luminescent properties of Tm3+ in Na3La2(BO3)3 host are investigated by the excitation and emission spectra at room temperature. The strongest transition (3P0→3H4, 352 nm) and transition (1D2→3H4, 457 nm)of Tm3+ are observed under the excitation of 262 nm and 358 nm, respectively. According to the concentra ion dependence of Tm3+ on emission intensity, it is proved that the suitable concentration of Tm3+ luminescence is about 4 mol%.