[DMEDA]PbCl4: a one-dimensional organic lead halide perovskite with efficient yellow emission,CrystEngComm

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[DMEDA]PbCl4: a one-dimensional organic lead halide perovskite with efficient yellow emission
CrystEngComm ( IF 2.6 ) Pub Date : 2020/01/07 , DOI: 10.1039/c9ce01816f
Chen Sun _{1,

2,

3,

4} , Yun-Di Yue _{1,

2,

3,

4} , Wei-Feng Zhang _{1,

2,

3,

4} , Xing-Yu Sun _{1,

2,

3,

4} , Yan Du _{1,

2,

3,

4} , Hong-Mei Pan _{1,

2,

3,

4} , Yue-Yu Ma _{1,

2,

3,

4} , Yuan-Chun He _{1,

2,

3,

4} , Meng-Ting Li _{1,

2,

3,

4} , Zhi-Hong Jing _{1,

2,

3,

4}

Affiliation

In recent years, low-dimensional organic–inorganic hybrid lead halide perovskites have been explored as photoluminescent (PL) materials with high photoluminescence quantum efficiencies and tunable band structures arising from the structural regulating functions of organic cations. Herein, by using a simple solution reaction, we prepared one new type of one-dimensional (1D) hybrid lead halide, namely [DMEDA]PbCl₄ (DMEDA = N,N′-dimethylethylenediamine). The compound contains 1D edge sharing octahedral lead chloride [PbCl₄]²⁻ anionic chains, which are surrounded and separated by organic cations of [DMEDA]²⁺. This 1D structure enables the formation of self-trapped excited states that give bright yellow emission with a photoluminescence quantum efficiency (PLQE) of approximately 4.81%. A white light emitting device can also be easily fabricated by coating a sample of [DMEDA]PbCl₄ on a blue light chip. Its PL stability and nature are also investigated by using various experiments. This work provides a new type of structural model to probe the PL properties and understand the structure–property relationship of low-dimensional lead halide perovskites.

中文翻译：

[DMEDA] PbCl4：具有有效黄光发射的一维有机卤化钙钛矿

近年来，低维有机-无机杂化卤化铅钙钛矿已被研究为具有高光致发光量子效率和可调节的能带结构的光致发光（PL）材料，该结构是由有机阳离子的结构调节功能引起的。本文中，通过简单的溶液反应，我们制备了一种新型的一维（1D）杂化卤化铅，即[DMEDA] PbCl ₄（DMEDA = N，N'-二甲基乙二胺）。该化合物包含一维边共享的八面体氯化铅[PbCl ₄ ] ^2-阴离子链，这些链被[DMEDA] ^2+的有机阳离子包围和分隔。这种一维结构能够形成自捕获的激发态，该激发态可以发出亮黄色的光，并具有约4.81％的光致发光量子效率（PLQE）。通过将[DMEDA] PbCl ₄样品涂覆在蓝光芯片上，也可以容易地制造白光发射器件。还通过各种实验研究了其PL稳定性和性质。这项工作提供了一种新型的结构模型，以探究PL特性并了解低维卤化铅钙钛矿的结构与性能之间的关系。

更新日期：2020-02-24

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