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Energy Transfer between Perylene Diimide Based Ligands and Cesium Lead Bromide Perovskite Nanocrystals
The Journal of Physical Chemistry C ( IF 3.7 ) Pub Date : 2020-01-24 , DOI: 10.1021/acs.jpcc.9b11525
Aurélien Rossi 1 , Michael B. Price 1, 2, 3 , Jake Hardy 1 , Jeffrey Gorman 4 , Timothy W. Schmidt 5 , Nathaniel J. L. K. Davis 1, 2, 3
Affiliation  

The creation of light-harvesting antenna complexes offers numerous potential applications in the field of optoelectronics. Cesium lead halide nanocrystals, specifically, are beginning to show great promise for optoelectronic applications due to their thermal stability and bright luminescence. As per the majority of all colloidally stable nanocrystals, they process surface-bound ligands that offer stability and surface state passivation. By replacing these ligands with organic chromophores various energy interactions can be observed, leading to a greater variety of potential applications. In this paper, we show enhanced emission in red and orange perylene diimide organic dye ligands through the transfer of energy harvested by CsPbBr3 nanocrystals. This has been demonstrated via steady-state and time-resolved fluorescence measurements and has a great potential for spectral management through energy-transfer interactions in hybrid light-harvesting systems. We estimate the Förster resonance energy-transfer efficiencies of up to 65 and 45% for perylene orange ligand surface loadings of 0.25 nm–2 and perylene red ligand surface loadings 0.12 nm–2, respectively.

中文翻译:

ylene二酰亚胺基配体与溴化铯铯钙钛矿纳米晶体之间的能量转移

光捕获天线复合体的创建在光电子领域提供了许多潜在的应用。特别地,卤化铯铯纳米晶体由于其热稳定性和明亮的发光性而开始在光电应用中显示出巨大的希望。根据所有胶体稳定纳米晶体的大多数,它们处理表面结合的配体,这些配体提供稳定性和表面状态钝化。通过用有机生色团取代这些配体,可以观察到各种能量相互作用,从而导致更多的潜在应用。在本文中,我们显示了通过转移CsPbBr 3收集的能量,红色和橙色per二酰亚胺有机染料配体的发射增强了纳米晶体。这已经通过稳态和时间分辨荧光测量得到了证明,并且在混合光收集系统中通过能量转移相互作用在光谱管理方面具有巨大潜力。我们估计per橙色配体表面载荷为0.25 nm –2和per红色配体表面载荷为0.12 nm –2时,Förster共振能量转移效率分别为65和45%。
更新日期:2020-01-26
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