CAJ | 학술논문

近年来，纳米晶体中稀土离子发光性质的研究越来越受到人们的广泛关注，这是因为纳米稀土发光材料在发光、高清显示、光电子纳米器件、生物荧光标记、激光和闪烁体等众多领域有着重要的应用前景。本项目采用软化学合成方法如水热法、溶胶－凝胶法等，通过合成工艺的调控，设计并合成出一系列不同颗粒尺寸、分散均匀、形貌可控的稀土离子掺杂氧化物（氟化物）微／纳米晶体，利用激发、发射、漫反射以及高分辨激光光谱等光谱分析手段对其发光性质进行研究，弄清影响发光行为的本质原因。同时，结合光谱实验数据，利用密度泛函理论和复杂晶体化学键介电理论方法进行理论计算，成功解释了光谱变化规律和不同稀土离子间能量传递机理，为相关稀土光谱研究奠定了理论和实验基础。
근년래，납미정체중희토리자발광성질적연구월래월수도인문적엄범관주，저시인위납미희토발광재료재발광、고청현시、광전자납미기건、생물형광표기、격광화섬삭체등음다영역유착중요적응용전경。본항목채용연화학합성방법여수열법、용효－응효법등，통과합성공예적조공，설계병합성출일계렬불동과립척촌、분산균균、형모가공적희토리자참잡양화물（불화물）미／납미정체，이용격발、발사、만반사이급고분변격광광보등광보분석수단대기발광성질진행연구，롱청영향발광행위적본질원인。동시，결합광보실험수거，이용밀도범함이론화복잡정체화학건개전이론방법진행이론계산，성공해석료광보변화규률화불동희토리자간능량전체궤리，위상관희토광보연구전정료이론화실험기출。
In recent years , the luminescence properties of the rare earth ions-doped nanocrystals become more and more popular because the rare earth luminescent nanocrystals have important applications in photolumines -cence, high-definition display, optoelectronic nano-devices, biological labeling, laser and scintillator etc..In this project , a series of different particle size , dispersion , controllable morphology rare earth ions-doped oxide ( fluoride ) micro-/nano-crystals were synthesized by soft chemistry synthesis method such as hydrothermal , sol-gel method et al..The luminescence properties were investigated by excitation spectra , emission spectra , diffuse reflectance spectra and high-resolution laser spectra in order to observe the changes of luminescent phe-nomenon with different size and chemical bond .The essential reason of the impact of luminescence behavior was also investigated by summary and classification .At the same time , theoretical calculations of optical prop-erties were performed by using density functional theory and complex crystal dielectric theory of chemical bond method with the combination of spectral experimental data , which can successfully explain the spectral shift rule and energy transfer mechanism between the different rare earth ions .The results can lay the theoretical and experimental basis for the other rare earth spectroscopy .