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P‐121: Successive and Scalable Synthesis of Highly Stable Cs 4 PbBr 6 Perovskite Microcrystal by Microfluidic System and Their Application in Backlight Display
Author(s) -
Wang Hung-Chia,
Bao Zhen,
Liu Ru-Shi
Publication year - 2018
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.12305
Subject(s) - backlight , perovskite (structure) , phosphor , photoluminescence , light emitting diode , nanocrystal , optoelectronics , materials science , quantum yield , diode , nanotechnology , chemistry , liquid crystal display , fluorescence , optics , crystallography , physics
All Inorganic CsPbX 3 (X = I, Br, Cl) perovskite nanocrystal have attracted immense research interest in recent years, due to their high photoluminescence quantum yield (PLQY). These fascinating features of inorganic nanocrystals have been utilized in light emitting diodes (LEDs) device. However, maintaining the high PLQY in the solid state remains a big challenge. Inorganic mesoporous silica encapsulation of NCs has moderate improvements, but it remains an unsolved problem. Robust and air‐stable Cs 4 PbBr 6 microcrystal was another choice in perovskite solid. In this study, we report mass production of Cs 4 PbBr 6 perovskite microcrystal by microfluidic system. To demonstrate the potential application of Cs 4 PbBr 6 perovskite microcrystal, we fabricated white‐light LEDs based on Cs4PbBr6 and K 2 SiF 6 :Mn 4+ phosphor. Our white light LED device for backlight display having the NTSC value is 115%.