摘要
纯无机钙钛矿材料具有颜色可调、带隙窄、制作工艺简单、成本低等优点,受到了广泛的研究,然而它在水和氧环境中的不稳定性限制了其应用。利用聚合物在非极性溶剂中的溶胀-收缩原理将CsPbBr3量子点原位生长在聚甲基丙烯酸甲酯(PMMA)薄膜中来提高钙钛矿量子点在水氧环境中的稳定性。该方法合成简便,可以降低CsPbBr3量子点的形成温度,并且可以得到稳定的钙钛矿相薄膜,制得的复合薄膜具有优异的空气稳定性和耐水性,并且具有可弯折性和高透过率,可应用于柔性器件中。CsPbBr3@PMMA复合薄膜制成的白光LED器件显示出良好的白色发光性能,色温为8221 K。
Pure inorganic perovskite materials have been widely investigated due to their color tunability,narrow band gap,simple fabrication process,and low cost.However,their application is limited by their instability in aqueous and oxygen environments.Herein,to improve the stability of perovskite quantum dots in aqueous and oxygen environments,CsPbBr3quantum dots were grown in-situ in poly(methyl methacrylate)(PMMA)flms based on the swelling-shrinkage principle of polymers in nonpolar solvents.The method is simple and can reduce the formation temperature of CsPbBr3quantum dots,and obtain stable perovskite phase perovskite flms.The prepared composite flms have excellent air stability and water resistance,bendable performance and high transmissivity,which can be used in fexible devices.The white LEDs made of CsPbBr3@PMMA composite flms illustrate good white luminescence with a color temperature of 8221 K.
作者
杨昊翰
王根乐
曾令文
林东海
YANG Haohan;WANG Genle;ZENG Lingwen;LIN Donghai(School of Energy and Materials,Shanghai Polytechnic University,Shanghai 201209,China;Research Center of Advanced Thermal Functional Materials,Shanghai Polytechnic University,Shanghai 201209,China;Shanghai Key Laboratory of Engineering Materials Application and Evaluation,Shanghai Polytechnic University,Shanghai 201209,China;Guangdong Langyuan Biotechnology Co.,Ltd.,Foshan 528313,Guangdong,China;Wuhan Sino Healthtech Inc.,Wuhan 430070,China)
出处
《上海第二工业大学学报》
2022年第4期301-307,共7页
Journal of Shanghai Polytechnic University
基金
上海市高等学校特聘教授(东方学者)
上海市材料科学与工程(节能与新能源材料)高原学科(A30NH221903)
上海第二工业大学-美国德雷克塞尔大学(Drexel University)光电与传感联合研究中心,武汉市科技计划(2020030603012347)
湖北省重点研发计划(2020BBA053)
佛山市科技创新团队专项(2018IT100343)资助。
