摘要
以稀土氧化物、硝酸铝和硼酸为原料,高温固相反应制备了单相红色荧光粉YAl3(BO3)4:Eu3+,用X射线衍射和发射光谱对荧光粉末的结构和发光性能进行了分析。研究了煅烧温度、Eu3+掺杂量对其发光性能的影响。结果表明,反应物在1 250℃下煅烧可制得单相YAl3(BO3)4:Eu3+晶体,在YAl3(BO3)4:Eu3+晶体中,Eu3+取代了YAl3(BO3)4晶体中Y3+,占据了非对称中心格位。在394 nm的紫外光激发下,YAl3(BO3)4:Eu3+荧光粉具有很强的发光性能,与(Y,Gd)BO3:Eu3+荧光粉相比,最强发射线波长由596 nm变为618 nm,由橙红色光变为红色光,色纯度有了很大提高。Eu3+的最佳掺杂量为8%(物质的量分数)。
Single phase YAl3（BO3）4：Eu3＋ red phosphor was prepared by solid state reaction with rare earth oxide,aluminum nitrate,and boric acid as raw materials.Structure and luminescent performance of the red phosphor powder were analyzed by X-ray diffraction（XRD） and luminescence spectra.Influences of calcining temperature and dosage of Eu3＋ on luminescent performance were studied.Results showed that single phase YAl3（BO3）4：Eu3＋ crystals could be prepared at the calcining temperature of 1 250 ℃;Y3＋ in YAl3（BO3）4 crystals was replaced by Eu3＋ in YAl3（BO3）4：Eu3＋ crystals and Eu3＋ occupied non-centrosymmetric sites in YAl3（BO3）4：Eu3＋;Under the excitation of 394 nm ultraviolet light,YAl3（BO3）4：Eu3＋ phosphor had a strong luminescent performance;comparing with（Y,Gd）BO3：Eu3＋ phosphor its wavelength of the strongest emission line was turned to 618 nm from 596 nm;the color changed into red from orange red and the color purity was improved a lot;and the optimal dosing rate of Eu3＋ was 8%（amount-of-substance fraction）.
出处
《无机盐工业》
CAS
北大核心
2010年第7期26-27,39,共3页
Inorganic Chemicals Industry
基金
牡丹江师范学院一般科技研究项目(KY200907)
