Lead-free thermochromic perovskites with tunable transition temperatures for smart window applications  

作　　者：Jingwen Li Xiaolong Liu Peixin Cui Junmeng Li Tao Ye Xi Wang Chuang Zhang Yong Sheng Zhao 

机构地区：[1]Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Science, Beijing 100190, China [2]University of Chinese Academy of Sciences, Beijing 100049, China [3]Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210000, China [4]Department of Physics, School of Science, Beijing Jiaotong University, Beijing 100044, China

出　　处：《Science China Chemistry》2019年第9期1257-1262,共6页中国科学（化学英文版）

基　　金：supported by the Ministry of Science and Technology of China (2017YFA0204502);the National Natural Science Foundation of China (21873105)

摘　　要：The structural flexibility of hybrid perovskite materials allows for phase transition and consequently thermochromic properties.Here we investigate the thermochromic performance in a series of copper-based layered perovskites with organic cations having different alky chain lengths. Their transition temperature is found to be dependent on the organic cations due to molecular motion and hydrogen bond interaction, providing possibilities to prepare thermochromic semiconductors near room temperature for smart window applications.The structural flexibility of hybrid perovskite materials allows for phase transition and consequently thermochromic properties.Here we investigate the thermochromic performance in a series of copper-based layered perovskites with organic cations having different alky chain lengths. Their transition temperature is found to be dependent on the organic cations due to molecular motion and hydrogen bond interaction, providing possibilities to prepare thermochromic semiconductors near room temperature for smart window applications.

关 键 词：LEAD-FREE perovskites THERMOCHROMIC transition ALKYL AMMONIUM IONS LAYERED structures smart windows 

分 类 号：O6[理学—化学]