玻璃微区钙钛矿纳米晶发光调控与应用  

Optical Regulation and Applications of Perovskite Nanocrystals in Glass Microdomains

作　　者：阮超 孙轲 李昕阔 邱建荣[3] 谭德志 RUAN Chao;SUN Ke;LI Xinkuo;QIU Jianrong;TAN Dezhi(School of Materials Science and Engineering,Zhejiang University,Hangzhou 310058,China;Zhejiang Lab,Hangzhou 311121,China;College of Optical Science and Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学材料科学与工程学院,杭州310058 [2]之江实验室,杭州311121 [3]浙江大学光电科学与工程学院,杭州310027

出　　处：《硅酸盐学报》2024年第8期2643-2658,共16页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(62275233)。

摘　　要：钙钛矿纳米晶玻璃由于其在可见光波段发光波长可调、超高稳定性、光致发光量子效率高、单色性良好等独特优势,被广泛应用于光存储、微型发光二极管(Micro-LED)、超高分辨显示等前沿领域。本文探讨了钙钛矿纳米晶的独特光学特性,综述了近年来通过B位取代、热处理和玻璃组成改性等方法优化钙钛矿纳米晶的晶体质量,进而提高其量子效率的各项研究。深入分析了热处理、超快激光直写等方式调控钙钛矿晶体组分和发光波长的根本机制。最后总结并展望了钙钛矿纳米晶玻璃在LED和光存储等领域的潜在应用和发展前景。The typical all-inorganic metal halide perovskite CsPbX_(3)(X=Cl,Br,I)is widely used in the field of optoelectronics due to its advantages such as tunable spectra,good monochromaticity,and high photoluminescence quantum efficiency.However,the structural instability of perovskite crystals is one of the inevitable problems affecting their practical applications.Perovskite nanocrystal glass,with its unique advantages such as tunable emission wavelength in the visible light spectrum,ultra-high stability,high photoluminescence quantum efficiency,and good monochromaticity,is widely used in frontier areas such as optical storage,Micro-LEDs,and ultra-high-resolution displays.However,there are still some issues with perovskite nanocrystal glass in applications.For example,the dense glass network structure limits the migration and growth of nanocrystals,resulting in lower quantum efficiency compared to nanocrystals in colloids.To optimize quantum efficiency,appropriate B-site substitution ions can be selected to reduce the toxicity of Pb and to improve the stability of perovskite nanocrystals.The heat treatment process reduces the energy barrier of the glass network,promotes the migration and enrichment of perovskite ions,and regulates the glass network structure to affect the migration and aggregation of ions,thereby affecting the nucleation and growth of perovskites.Additionally,self-crystallizing glass has relatively low energy barriers and reduces energy consumption during the heat treatment process.These methods of controlling crystal quality provide opportunities for improving the quantum efficiency of perovskite nanocrystal glass.Furthermore,controlling the size and composition of perovskite nanocrystals can achieve tunable emission wavelengths.In addition to the above methods,ultrafast lasers,with features such as energy accumulation due to multiphoton absorption,micro-explosions induced by plasma thermal expansion,and rearrangement of glass frameworks,can induce local crystallization of glass,enabling direct redis

关 键 词：钙钛矿 纳米晶玻璃 优化量子效率 调控发光波长 光存储 发光二极管显示 

分 类 号：TQ171.1[化学工程—玻璃工业]