无机材料学报2013，Vol.28Issue(2)：146-152,7.DOI:10.3724/SP.J.1077.2013.12172
热处理温度对β-NaYF4∶Yb3+、 Er3+纳/微米颗粒上转换发光性能的影响
Effect of Heat-treatment Temperature on Upconversion Luminescence of β-NaYF4∶Yb3+ ,Er3+ Nano/Microparticles
摘要
Abstract
β-NaYF4:20%Yb3+,2%Er3+ nano/microparticles were successfully synthesized by solvothermal and thermal decomposition method. According to the results obtained with TG-DTA, the as-synthesized samples were heat-treated at different temperatures in air. The microstructure, morphology and upconversion luminescence property of annealed samples were characterized by XRD, SEM, FT-IR and photoluminescence (PL) spectra. The results show that the total upconversion luminescence intensity of nano/microparticles firstly increases and then decreases with a rise of temperature. Comparing with the as-prepared samples, appropriate heat treatment temperature (580℃) can improve upconversion luminescence property of nanoparticles. The results in present research indicate that the improvement of crystallization, the decrease in the concentration of defects and the decomposition of the organic molecules on the sur-face of the particles induce the enhancement of upconversion luminescence. However, the intensity of upconversion luminescence decreases sharply under higher temperature treatment (＞580℃), which may be due to the phase transition (P→α) and the existence of Na2CO3. The differences in luminescence property between nanoparticles and mi-croparticles are mainly attribute to different agglomeration degree of particles during thermal treatment.关键词
β-NaYF4/纳/微米颗粒/热处理/上转换发光Key words
P-NaYF4/ nano/microparticles/ thermal treatment/ upconversion分类
数理科学引用本文复制引用
丁明烨,陆春华,黄文娟,蒋晨飞,倪亚茹,许仲梓..热处理温度对β-NaYF4∶Yb3+、 Er3+纳/微米颗粒上转换发光性能的影响[J].无机材料学报,2013,28(2):146-152,7.基金项目
江苏高校优势学科建设工程资助项目(PADP) （PADP）
江苏省高校自然科学研究重大资助项目(10KJA430016) （10KJA430016）
江苏省普通高校研究生科研创新计划项目(CXLX11_0355) （CXLX11_0355）
