钙钛矿纳米晶复合硫系玻璃析晶机理及性能  

Crystallization Mechanism and Properties of Perovskite Nanocrystalline Embedded Chalcogenide Glass

作　　者：范培宽 周港杰 康世亮 林常规[1,2] FAN Peikuan;ZHOU Gangjie;KANG Shiliang;LIN Changui(Laboratory of infrared Materials and Devices,Ningbo University,Ningbo 315211,Zhejiang,China;Engineering Research Center for Advanced Infrared Photoelectric Materials and Devices,Ningbo 315211,Zhejiang,China)

机构地区：[1]宁波大学红外材料及器件实验室,浙江宁波315211 [2]先进红外光电材料与器件浙江省工程研究中心,浙江宁波315211

出　　处：《硅酸盐学报》2024年第8期2634-2642,共9页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(62122039)。

摘　　要：钙钛矿纳米晶因其优异的可调发光和光电性能,在各光电应用领域广受关注。本文综述了硫系玻璃中金属卤化物钙钛矿纳米晶的研究进展,介绍了玻璃熔体法制备钙钛矿纳米晶复合硫系玻璃及其性能,并以无铅钙钛矿材料CsSnBr_(3)为例探讨了硫系玻璃中钙钛矿纳米晶析晶机理,并总结了目前钙钛矿纳米晶复合硫系玻璃的研究现状及发展趋势。Inorganic perovskite nanocrystals exhibit superior thermal stability and higher quantum yields compared to organic-inorganic hybrid perovskites.Additionally,perovskite nanocrystals have gained significant attention in fields such as solar cells,low-threshold lasers,light-emitting diodes(LEDs),and photodetectors,owing to their excellent tunable luminescent and optoelectronic properties.As a kind of nanocrystal with excellent photoelectric properties,CsPbX can achieve tunable emission in the whole visible spectral region by means of compositional alloying and quantum size effect.However,all-inorganic CsPbX_(3) perovskite nanocrystal still faces challenges in terms of poor stability and the toxicity of lead,which limits its application.Various strategies have been proposed to improve its resistance against environmental erosion,including surface modification,polymer encapsulation,and in-situ crystallization within inert glass matrices.Among them,embedding nanocrystals into inert glass matrices has been proposed to enhance their stability and demonstrate excellent heat resistance and resistance to intense light irradiation.However,traditional oxide glass is prepared under high-temperature open environments,leading to the volatilization of some glass components and the decomposition of perovskite nanocrystals.It results in unclear composition of the prepared glass and poor sample reproducibility.On the other hand,in response to the environmental toxicity of lead-based perovskites,non-toxic metals such as Sn,Bi,and Ge were employed for the substitution for Pb.Tin-based perovskites,in particular,have similar crystal and electronic structures to lead-based perovskites and exhibit fascinating near-infrared luminescence.By controlling the composition and quantum size,the emission spectra of CsSnX_(3)perovskites can be tuned from visible light to approximately 1μm in the near-infrared spectral region,which can not be achieved in lead-based perovskite materials.However,due to the high sensitivity and easy oxidation of metas

关 键 词：钙钛矿纳米晶 硫系玻璃 熟化 卤化锡 卤化铅 

分 类 号：TB383.1[一般工业技术—材料科学与工程]