CAJ | 학술논문

采用高温固相法合成了一种单一相LiCa_3MgV_3O_(12):Eu~(3+)白光发光粉,研究了不同的合成温度和不同Eu~(3+)掺杂浓度等条件对其发光性能的影响.该发光粉在近紫外光激发下呈现由两个谱带组成的发射光谱,分别是峰值为530 nm的[VO_4]~(3-)的特征宽带和峰值为610 nm的Eu~(3+)的特征宽带,通过调整合适的Eu~(3+)掺杂量它们可混合成白光,当Eu~(3+)掺杂摩尔分数为0.01时,发光粉的色品坐标为(x=0.33,y=0.34),显色指数为87.该发光粉可和具有近紫外光发射的InGaN管芯配合制得白光LED,极具应用价值.
채용고온고상법합성료일충단일상LiCa_3MgV_3O_(12):Eu~(3+)백광발광분,연구료불동적합성온도화불동Eu~(3+)참잡농도등조건대기발광성능적영향.해발광분재근자외광격발하정현유량개보대조성적발사광보,분별시봉치위530 nm적[VO_4]~(3-)적특정관대화봉치위610 nm적Eu~(3+)적특정관대,통과조정합괄적Eu~(3+)참잡량타문가혼합성백광,당Eu~(3+)참잡마이분수위0.01시,발광분적색품좌표위(x=0.33,y=0.34),현색지수위87.해발광분가화구유근자외광발사적InGaN관심배합제득백광LED,겁구응용개치.
The luminescence of a single phase material LiCa_3MgV_3O_(12):Eu~(3+) are reported and discussed as a potential phosphor excited by UV-LED. The photoluminescence spectra show two bands with peaks at 530 nm and 610 nm, which are attributed to (VO_4)~(3-) and Eu~(3+) ,respectively. By mixing the colors of the two bans, the (x,y) coordinates vary systematically due to the different Eu~(3+) concentration. When the mol fraction of Eu~(3+) is 0.01, the (x,y) coordinate is (0.33,0.34). This single phosphor is capable of converting the ultraviolet emission of a UV-LED into white light-emitting.