Li Tong, Zhang Dan, Chen Cong, Bo Shuhui, Zhang Daming
State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, People's Republic of China.
J Nanosci Nanotechnol. 2010 Mar;10(3):2169-72. doi: 10.1166/jnn.2010.2115.
Oleic acid (OA)-modified LaF3:Er,Yb nanoparticle-doped organic-inorganic hybrid material (OIHM) was prepared. The absorption spectrum and photoluminescence spectrum were analyzed. The full width at half maximum (FWHM) of the photoluminescence spectrum was about 83 nm. The Judd-Ofelt theory was used to analyze the absorption spectrum of Er3+ and obtain the intensity parameters: omega2 = 2.11 x 10(-20) cm2, omega4 = 0.78 x 10(-200 cm2, omega6 = 0.56 x 10(-20)cm2. The line strengths predict spontaneous transition probabilities, and the radiative lifetimes are calculated with the Judd-Ofelt intensity parameters. The calculated radiative lifetime of the excited 4I13/2 state of Er3+ is 13.34 ms. Based on the parameters we calculated, OA-modified LaF3:Er,Yb nanoparticle-doped OIHM is a potential material for polymeric optical waveguide amplifiers.
制备了油酸（OA）修饰的掺镧氟铒镱（LaF3:Er,Yb）纳米颗粒的有机-无机杂化材料（OIHM）。分析了其吸收光谱和光致发光光谱。光致发光光谱的半高宽（FWHM）约为83nm。利用Judd-Ofelt理论分析了Er3+的吸收光谱并获得强度参数：ω2 = 2.11×10(-20) cm2，ω4 = 0.78×10(-200) cm2，ω6 = 0.56×10(-20) cm2。谱线强度预测自发跃迁概率，并利用Judd-Ofelt强度参数计算辐射寿命。计算得到Er3+激发态4I13/2的辐射寿命为13.34ms。基于我们计算的参数，OA修饰的掺LaF3:Er,Yb纳米颗粒的OIHM是一种用于聚合物光波导放大器的潜在材料。
