宽带近红外Na_(3)CrF_(6)荧光粉的水热合成及发光性能  

Hydrothermal synthesis and luminescent properties of broadband near⁃infrared Na_(3)CrF_(6) phosphor

作　　者：张涵[1] 孙剑锋[1,2] 梁金生[1,2] ZHANG Han;SUN Jianfeng;LIANG Jinsheng(Key Laboratory of Special Functional Materials for Ecological Environment and Information of Ministry of Education,Hebei University of Technology,Tianjin 300130,China;Institute of Power Source and Ecomaterials Science,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]河北工业大学生态环境与信息特种功能材料教育部重点实验室,天津300130 [2]河北工业大学能源与环保材料研究所,天津300130

出　　处：《无机化学学报》2025年第2期349-356,共8页Chinese Journal of Inorganic Chemistry

基　　金：河北省“巨人计划”创新团队领军人才计划项目(2018)资助。

摘　　要：利用水热法合成了一种宽带近红外Na_(3)CrF_(6)荧光粉,研究了其结构、微观形貌和光致发光性能。结果表明,在435nm激发光的照射下,Na_(3)CrF_(6)荧光粉可发出650~850nm宽带近红外光,其峰值位于738nm处,半高宽为95nm;通过分析光谱数据,发现Cr3+在Na_(3)CrF_(6)荧光粉中的晶体场强度为1.72,处于弱晶体场环境中;298~473K温度范围内,随着加热温度的升高,Na_(3)CrF_(6)荧光粉的发光强度缓慢下降。A broadband near-infrared Na_(3)CrF_(6)phosphor was synthesized by hydrothermal method,and its structure,microstructure,and photoluminescence properties were investigated.The results show that under excitation of 435 nm,the Na_(3)CrF_(6)phosphor can emit broadband near-infrared light of 650-850 nm,with a peak at 738 nm and a half maximum width of 95 nm.The crystal field intensity of Cr3+in Na_(3)CrF_(6)phosphor was calculated to be 1.72 by analyzing spectral data,indicating that Cr3+is located in the weak crystal field environment.The luminescent intensity of Na_(3)CrF_(6)phosphor decreased slowly with the increase of heating temperature in the temperature range of 298-473 K.

关 键 词：宽带近红外荧光粉 水热合成 Na_(3)CrF_(6) 光致发光性能 荧光粉转换发光二极管 

分 类 号：O614.611[理学—无机化学] O482.31[理学—化学]