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Luminescent zero-dimensional organic metal halide hybrids with near-unity quantum efficiency†
Chemical Science ( IF 7.6 ) Pub Date : 2017-11-21 00:00:00 , DOI: 10.1039/c7sc04539e Chenkun Zhou 1 , Haoran Lin 1 , Yu Tian 2 , Zhao Yuan 1 , Ronald Clark 2 , Banghao Chen 2 , Lambertus J van de Burgt 2 , Jamie C Wang 2 , Yan Zhou 2 , Kenneth Hanson 2, 3 , Quinton J Meisner 2 , Jennifer Neu 4 , Tiglet Besara 4 , Theo Siegrist 1, 2, 4 , Eric Lambers 5 , Peter Djurovich 6 , Biwu Ma 1, 2, 3
Chemical Science ( IF 7.6 ) Pub Date : 2017-11-21 00:00:00 , DOI: 10.1039/c7sc04539e Chenkun Zhou 1 , Haoran Lin 1 , Yu Tian 2 , Zhao Yuan 1 , Ronald Clark 2 , Banghao Chen 2 , Lambertus J van de Burgt 2 , Jamie C Wang 2 , Yan Zhou 2 , Kenneth Hanson 2, 3 , Quinton J Meisner 2 , Jennifer Neu 4 , Tiglet Besara 4 , Theo Siegrist 1, 2, 4 , Eric Lambers 5 , Peter Djurovich 6 , Biwu Ma 1, 2, 3
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Single crystalline zero-dimensional (0D) organic–inorganic hybrid materials with perfect host–guest structures have been developed as a new generation of highly efficient light emitters. Here we report a series of lead-free organic metal halide hybrids with a 0D structure, (C4N2H14X)4SnX6 (X = Br, I) and (C9NH20)2SbX5 (X = Cl), in which the individual metal halide octahedra (SnX64−) and quadrangular pyramids (SbX52−) are completely isolated from each other and surrounded by the organic ligands C4N2H14X+ and C9NH20+, respectively. The isolation of the photoactive metal halide species by the wide band gap organic ligands leads to no interaction or electronic band formation between the metal halide species, allowing the bulk materials to exhibit the intrinsic properties of the individual metal halide species. These 0D organic metal halide hybrids can also be considered as perfect host–guest systems, with the metal halide species periodically doped in the wide band gap matrix. Highly luminescent, strongly Stokes shifted broadband emissions with photoluminescence quantum efficiencies (PLQEs) of close to unity were realized, as a result of excited state structural reorganization of the individual metal halide species. Our discovery of highly luminescent single crystalline 0D organic–inorganic hybrid materials as perfect host–guest systems opens up a new paradigm in functional materials design.
中文翻译：
具有接近统一量子效率的发光零维有机金属卤化物杂化物†
具有完美主客体结构的单晶零维（0D）有机-无机杂化材料已被开发为新一代高效发光体。在这里，我们报告了一系列具有 0D 结构的无铅有机金属卤化物杂化物，(C 4 N 2 H 14 X) 4 SnX 6 (X = Br, I) 和 (C 9 NH 20 ) 2 SbX 5 (X = Cl), 其中单独的金属卤化物八面体 (SnX 6 4- ) 和四角锥体 (SbX 5 2- ) 彼此完全隔离并被有机配体 C 4 N包围2 H 14 X +和 C 9 NH 20 +， 分别。通过宽带隙有机配体对光活性金属卤化物物质的隔离导致金属卤化物物质之间没有相互作用或电子带形成，从而使块状材料表现出单个金属卤化物物质的固有特性。这些 0D 有机金属卤化物杂化物也可以被认为是完美的主客体系统，金属卤化物物种周期性地掺杂在宽带隙基质中。由于单个金属卤化物物质的激发态结构重组，实现了高度发光、强斯托克斯频移宽带发射，其光致发光量子效率 (PLQE) 接近于一。
更新日期：2017-11-21
中文翻译：
具有接近统一量子效率的发光零维有机金属卤化物杂化物†
具有完美主客体结构的单晶零维（0D）有机-无机杂化材料已被开发为新一代高效发光体。在这里，我们报告了一系列具有 0D 结构的无铅有机金属卤化物杂化物，(C 4 N 2 H 14 X) 4 SnX 6 (X = Br, I) 和 (C 9 NH 20 ) 2 SbX 5 (X = Cl), 其中单独的金属卤化物八面体 (SnX 6 4- ) 和四角锥体 (SbX 5 2- ) 彼此完全隔离并被有机配体 C 4 N包围2 H 14 X +和 C 9 NH 20 +， 分别。通过宽带隙有机配体对光活性金属卤化物物质的隔离导致金属卤化物物质之间没有相互作用或电子带形成，从而使块状材料表现出单个金属卤化物物质的固有特性。这些 0D 有机金属卤化物杂化物也可以被认为是完美的主客体系统，金属卤化物物种周期性地掺杂在宽带隙基质中。由于单个金属卤化物物质的激发态结构重组，实现了高度发光、强斯托克斯频移宽带发射，其光致发光量子效率 (PLQE) 接近于一。
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