Open AccessStable near white light emission in CsPbCl3 perovskite quantum dots by incorporating Al3+/Mn2+ ions
Author(s) -
Muhammad Amin Padhiar,
Minqiang Wang,
Yongqiang Ji,
Yun Zhou,
Hengwei Qiu,
Zhi Yang
Publication year - 2020
Publication title -
nano express
Language(s) - English
Resource type - Journals
ISSN - 2632-959X
DOI - 10.1088/2632-959x/abcf8e
Subject(s) - materials science , quantum dot , doping , perovskite (structure) , chromaticity , context (archaeology) , optoelectronics , ion , luminescence , halide , diode , light emitting diode , electroluminescence , nanotechnology , inorganic chemistry , chemistry , optics , physics , crystallography , paleontology , organic chemistry , layer (electronics) , biology
All inorganic cesium lead halides (CsPbX 3 , X = Cl, Br, I) are promising materials and have been developed in recent years for various optoelectronic devices and applications because of their excellent optoelectronic properties. Regardless of their excellent characteristics their stability is still uncertain and it is challenging task to obtain stable emission in CsPbX 3 perovskite quantum dots (PQDs), hence limiting their practical optoelectronic application. In this context, several approaches have been used like an-ion exchange, ion doping, and core–shell structure to enhance PQDs stability. Herein, we synthesized dual ion co-doped Al 3+ /Mn 2+ CsPbCl 3 PQDs for stable light emitting diodes through traditional hot injection method for the first time. By adjusting molar concentration of Al 3+ /Mn 2+ CsPbCl 3 , co-doped PQDs were successfully prepared. The co-doped PQDs exhibit tunable emission, covering a wide range under UV excitation. Moreover, these high luminescent co-doped PQDs were used to fabricate WLEDs, displaying stable near white light emission with the chromaticity coordination at (0.35, 0.28). Some new evidence has emerged, although some aspects of Mn 2+ and Al 3+ doping are considered to be consistent with previous conclusions. This viewpoint incorporates all of these details and focuses on the path of transition metal ion doping to perovskite nanostructures and offers an overview for possible potential studies.