Laser Emission from Self-Assembled Colloidal Crystals of Conjugated Polymer Particles in a Metal-Halide Perovskite Matrix
Laser Emission from Self-Assembled Colloidal Crystals of Conjugated Polymer Particles in a Metal-Halide Perovskite Matrix
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DOI：
10.1021/acs.chemmater.9b00307
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发表时间：
2019-03
影响因子：
8.6
通讯作者：
A. Mikosch;Sibel Ciftci;Gregory D. Tainter;Ravichandran Shivanna;Bastian Haehnle;F. Deschler;A. Kuehne
中科院分区：
文献类型：
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作者：
A. Mikosch;Sibel Ciftci;Gregory D. Tainter;Ravichandran Shivanna;Bastian Haehnle;F. Deschler;A. Kuehne
在这里，我们提出了一种混合的有机/无机光子复合材料，它产生的激光发射后，泵浦无机成分的有机材料。该复合材料由钙钛矿结构的卤化铅-甲基铵基质CH 3 NH3 Pb（BrxCl（1-x））3和单分散的聚（芴-co-二乙烯基苯）颗粒组成，具有优异的光反馈和增益。微米尺寸的共轭聚合物颗粒（CPP）与钙钛矿前体一起使用单步垂直沉积方法从溶液中沉积。粒子自组装成光子晶体，钙钛矿在间隙空间中形成无机基质。在钙钛矿中具有不同卤化物比率（Br：Cl：1/9和4/6）的两个系统中研究了在光学泵浦金属卤化物钙钛矿之后向聚合物颗粒的能量转移，以控制钙钛矿发射能量与颗粒吸收的重叠。从时间分辨的光致发光实验，我们观察到非辐射能量…
Here, we present a hybrid organic/inorganic photonic composite, which generates laser emission from the organic material after pumping the inorganic component. The composite consists of a methylammonium lead-halide perovskite matrix CH3NH3Pb(BrxCl(1–x))3 and monodisperse poly(fluorene-co-divinylbenzene) particles, which have excellent optical feedback and gain. Micrometer-sized conjugated polymer particles (CPPs) are deposited together with the perovskite precursor from solution using a single-step vertical deposition method. The particles self-assemble into a photonic crystal and the perovskite forms an inorganic matrix in the interstitial space. Energy transfer to the polymer particles after optically pumping the metal-halide perovskite is studied in two systems with different halide ratios in the perovskite (Br to Cl: 1/9 and 4/6) to control the overlap of the perovskite emission energy with the absorption of the particles. From time-resolved photoluminescence experiments, we observe nonradiative energ...