Tuning the Upconversion Efficiency and Spectrum of Upconversion Nanoparticles through Surface Decorating of an Organic Dye
作者:Meng Xue、Cong Cao、Xiaobo Zhou、Ming Xu、Wei Feng、Fuyou Li
DOI:10.1021/acs.inorgchem.9b02081
日期:2019.11.4
through an energy-transfer process can decrease the ratio of nonradiative transition and cause a new radiative pathway. Through calculation of the rate equations, we studied the effects of the energy-transfer efficiency and activator type on the UCQY enhancement. On the basis of calculations of the CIE color coordinates, tunable color from Er3+, Tm3+, Ho3+, and Tb3+ ions was generated by surface decorating
在本文中,我们利用上转换纳米粒子(UCNPs)和有机染料分子之间的能量转移过程来增强UCNPs-染料系统的上转换量子产率(UCQY)并调整发光输出颜色。结果表明,通过能量转移过程向能量供体添加能量耗散途径可以降低非辐射跃迁的比率并引起新的辐射途径。通过计算速率方程,我们研究了能量转移效率和活化剂类型对UCQY增强的影响。根据CIE颜色坐标的计算,可从Er 3+,Tm 3+,Ho 3+和Tb 3+调整颜色通过有机染料的表面修饰产生离子。这里描述的方法提供了一种新的方法,可以优化UCQY,并通过在纳米范围内的能量转移来控制发射。