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Synthesis of Gram‐Scale Ultrastable Mn‐Doped 2D Perovskites for Light‐Emitting Diodes
Author(s) -
Hou Lu,
Zhu Yihua,
Zhu Jingrun,
Li Xuyan,
Zeng Feng,
Yang Tingyu,
Gong Yiqin,
Shen Jianhua,
Li Chunzhong
Publication year - 2021
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.202002175
Subject(s) - photoluminescence , materials science , light emitting diode , doping , phosphor , quantum yield , perovskite (structure) , diode , optoelectronics , yield (engineering) , solid state lighting , luminescence , nanotechnology , chemical engineering , optics , metallurgy , physics , fluorescence , engineering
Mn‐doped 2D perovskites are emerging as good candidates for light‐emitting applications due to their excellent optical and electrical properties. Major synthetic routes, solid‐state grinding and high‐temperature solution synthesis, are extensively studied to prepare Mn‐doped 2D perovskites. However, complicated synthesis, small‐scale yields, and poor‐stability impede their widespread applications. Herein, a one‐step acid‐solution‐assisted method is exhibited for gram‐scale production of Mn‐doped 2D (C 8 H 17 NH 2 ) 2 PbBr 4 with a solid yield of 1.35 g products out of 3 mL solvent. After Mn‐doped 2D (C 8 H 17 NH 2 ) 2 PbBr 4 being stored in the air for 90 days, the photoluminescence (PL) quantum yield of powders has minor changes, showing good stability. Phosphor‐converted monochrome light‐emitting diodes (LEDs) are fabricated. After the LEDs work 6 h under a voltage of 3 V, their PL spectra have no obvious change, showing a great potential in optoelectronic devices. This study provides a new effective strategy for large‐scale synthesis of ultrastable Mn‐doped 2D perovskites, which is expected to provide inspiration for the industrial optoelectronic applications of perovskites.