Real-time evolution of up-conversion nanocrystals from tailored metastable intermediates

作     者：Peng Zhang Xue Yu Ping Xia Zhenzhen Cui Jianhong Yi Caiju Li Peng Song Feng Zhao Ting Wang Jianbei Qiu Xuhui Xu Peng Zhang;Xue Yu;Ping Xia;Zhenzhen Cui;Jianhong Yi;Caiju Li;Peng Song;Feng Zhao;Ting Wang;Jianbei Qiu;Xuhui Xu

作者机构：Faculty of Materials Science and EngineeringKey Laboratory of Advanced Materials of Yunnan ProvinceKunming University of Science and TechnologyKunming 650093China Yunnan AFPN Technology Company LimitedKunming 650093China School of Mechanical EngineeringInstitute for Advanced StudyInstitute for Advanced Materials Deformation and Damage from Multi-ScaleChengdu UniversityChengdu 610106China College of Materials and Chemistry&Chemical EngineeringChengdu University of TechnologyChengdu 610059China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2023年第16卷第1期

页      面：1552-1557页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：This work was financially supported by the National Natural Science Foundation of China(NSFC)(No.61965012) Science and Technology Major Project of Yunnan Province(No.202202AG050004) Technological Innovation Fund Project of Small and Medium-sized Enterprises of Yunnan Province(No.202104AP080068) Yunnan Provincial Natural Science Foundation(Nos.202001AS070008 and 202101AT070126) Yunnan Ten Thousand Talents Plan Young&Elite Talents Project(No.YNWR-QNBJ-2018-295) the Excellent Youth Project of Yunnan Province Applied Basic Research Project(No.2019FI001) Rare and Precious Metal Materials Genome Engineering Project of Yunnan Province(No.202002AB080001) Sichuan Natural Science Foundation(Nos.2022YFH0108 and 2022JDJQ0030) 

主　　题：up-conversion nanocrystals metastable intermediates real-time evolution in-situ transmission electron microscopy(TEM) 

摘      要：In-situ observation of the growth and decomposition processes is significantly important for guiding the fabrication of upconversion nanocrystals(UCNCs)with high ***,the high crystallization energy and rapid nucleation rate of the corresponding crystals make real-time observation still a huge ***,the in-situ nucleation-growth-degradation processes of the UCNCs are investigated by employing tailored metastable intermediates,which possess a slowing-down nucleation rate under electron beam *** non-classical nucleation processes of the UCNCs,containing the coalescence of clusters and the subsequent crystallization,are ***,the Ostwald ripening and oriented attachment processes,which determine the particle size and morphology,are unambiguously ***,the degrading process of the UCNCs is observed to be triggered by surface *** work provides an insight into the real-time evolution dynamics of the UCNCs,which further sheds light on the fabrication of nano-sized up-conversion phosphors.