典型文献
High effiiciency pure blue perovskite quantum dot light-emitting diodes based on formamidinium manipulating carrier dynamics and electron state filling
文献摘要：
Achieving high efficiency and stable pure blue colloidal perovskite quantum dot(QD)light-emitting diodes(LEDs)is still an enormous challenge because blue emitters typically exhibit high defect density,low photoluminescence quantum yield(PLQY)and easy phase dissociation.Herein,an organic cation composition modification strategy is used to synthesize high-performance pure blue perovskite quantum dots at room temperature.The synthesized FA-CsPb(Clo.5Bro.5)3 QDs show a bright photoluminescence with a high PLQY(65％),which is 6 times higher than the undoped samples.In addition,the photophysical properties of the FA cation doping was deeply illustrated through carrier dynamics and first principal calculation,which show lower defects,longer lifetime,and more reasonable band gap structure than undoped emitters.Consequently,pure blue FA-CsPb(Cl0.5Br0.5)3 QDs light-emitting devices were fabricated and presented a maximum luminance of 1452 cd m-2,and an external quantum efficiency of 5.01％with an emission at 474 nm.The excellent photoelectric properties mainly originate from the enhanced blue QDs emitter and effective charge injection and exciton radiation.Our finding underscores this easy and feasible room temperature doping approach as an alternative strategy to blue perovskite QD LED development.
文献关键词：
中图分类号：
作者姓名：
Long Gao;Yilin Zhang;Lijie Gou;Qian Wang;Meng Wang;Weitao Zheng;Yinghui Wang;Hin-Lap Yip;Jiaqi Zhang
作者机构：
College of Materials Science and Engineering,Key Laboratory of Automobile Materials,Ministry of Education,Jilin University,Changchun 130012,China;Femtosecond Laser laboratory,Key Laboratory of Physics and Technology for Advanced Batteries,Ministry of Education,College of Physics,Jilin University,Changchun 130012,China;Department of Materials Science and Engineering,City University of Hong Kong,Kowloon,Hong Kong,China;School of Energy and Environment,City University of Hong Kong,Kowloon,Hong Kong,China;Hong Kong Institute for Clean Energy,City University of Hong Kong,Kowloon,Hong Kong,China
文献出处：
引用格式：
[1]Long Gao;Yilin Zhang;Lijie Gou;Qian Wang;Meng Wang;Weitao Zheng;Yinghui Wang;Hin-Lap Yip;Jiaqi Zhang-.High effiiciency pure blue perovskite quantum dot light-emitting diodes based on formamidinium manipulating carrier dynamics and electron state filling)[J].光：科学与应用（英文版）,2022(12):3087-3097
A类：
5Bro
B类：
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AB值：
0.589149
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