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Bulk Assembly of Multicomponent Zero-Dimensional Metal Halides with Dual Emission
ACS Materials Letters ( IF 9.6 ) Pub Date : 2020-03-06 , DOI: 10.1021/acsmaterialslett.0c00011
Chenkun Zhou 1 , Sujin Lee 2 , Haoran Lin 2 , Jennifer Neu 3 , Maya Chaaban 2 , Liang-Jin Xu 2 , Ashley Arcidiacono 2 , Qingquan He 2 , Michael Worku 4 , Logan Ledbetter 5 , Xinsong Lin 2 , John A. Schlueter 6 , Theo Siegrist 1, 3 , Biwu Ma 1, 2, 4
Affiliation  

Bulk assemblies of zero-dimensional (0D) metal halides with exceptional structural versatility have enabled the development of a number of highly efficient emitters with tunable photophysical properties. Here, we report a novel single crystalline bulk assembly of multicomponent 0D metal halides, (bmpy)9[SbCl5]2[Pb3Cl11] (bmpy = 1-butyl-1-methylpyrrolidinium), which exhibits dual emissions from distinct metal halide species. Excitation-dependent warm white light emissions with high photoluminescence quantum efficiencies of >70% can be obtained by combining green emission from Pb3Cl115– and orange emission from SbCl52–. Because of complete site isolation by wide bandgap organic moieties and little-to-no spectral overlaps, no energy transfer occurs between two distinct emitting species, allowing for precise color control by manipulating the excitation wavelengths. Our discovery of dual emitting organic metal halide hybrid opens up a new way to develop precisely ordered single-crystalline multicomponent materials with multi-functionalities.

中文翻译:

散装双排放多组分零维金属卤化物

具有出色的结构通用性的零维(0D)金属卤化物的散装组件使许多具有可调光物理性质的高效发射器的开发成为可能。在这里,我们报告了一种多组分0D金属卤化物的新的单晶本体组装,(bmpy)9 [SbCl 5 ] 2 [Pb 3 Cl 11 ](bmpy = 1-丁基-1-甲基吡咯烷鎓),其显示出独特金属的双重排放卤化物。通过结合Pb 3 Cl 11 5–的绿色发射和SbCl 5 2–的橙色发射,可以获得具有大于70%的高光致发光量子效率的激发相关的暖白光发射。。由于宽带隙有机部分完全隔离了位点,并且几乎没有光谱重叠,因此在两个不同的发射物种之间没有发生能量转移,从而可以通过控制激发波长来进行精确的颜色控制。我们对双发射有机金属卤化物杂化物的发现开辟了一种新的方法,以开发具有多功能的精确订购的单晶多组分材料。
更新日期:2020-04-23
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