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Dual Emission of Water-Stable 2D Organic-Inorganic Halide Perovskites with Mn(ll) Dopant

机译:Mn(ll)掺杂剂对水稳性二维有机-无机卤化物钙钛矿的双重发射

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摘要

Moisture-delicate and water-unstable organic-inorganic halide perovskites (OI-HPs) create huge challenges for the synthesis of highly efficient water-stable light-emitting materials for optoelectronic devices. Herein, a simple acid solution-assisted method to synthesize quantum confined 2D lead perovskites through Mn doping is reported. The efficient energy transfer between host and dopant ions in orange light-emitting Mn2+-doped OI-HPs leads to the most efficient integrated luminescence with a photoluminescence quantum yield over 45%. The Mn2+ substitution of Pb2+ and passivation with low dielectric constant molecules such as phenethylamine, benzylamine, and butylamine enhance water resistivity, leading to water stability. The dual emission process of this water-stable 2D Mn-doped perovskite will help in developing highly efficient 2D water-stable perovskites for practical applications.
机译:湿润且水不稳定的有机-无机卤化物钙钛矿(OI-HPs)为光电子器件用高效水稳定的发光材料的合成提出了巨大的挑战。在本文中,报道了一种简单的酸溶液辅助方法,其通过Mn掺杂合成量子约束的2D钙钛矿。在橙色发光的Mn2 +掺杂的OI-HP中,主体离子和掺杂离子之间的有效能量转移导致了最有效的集成发光,其光致发光量子产率超过45%。 Mn2 +取代Pb2 +并用低介电常数分子(例如苯乙胺,苄胺和丁胺)钝化可增强水电阻率,从而导致水稳定性。这种水稳定的2D锰掺杂钙钛矿的双重发射过程将有助于开发适用于实际应用的高效2D水稳定的钙钛矿。

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