Quantum dot/J-aggregate blended films for light harvesting and energy transfer.
Quantum dot/J-aggregate blended films for light harvesting and energy transfer.
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用于光收集和能量传输的量子点/J-聚集体混合薄膜。
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
M. Bawendi
中科院分区：
文献类型：
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作者：
Brian J. Walker;V. Bulović;M. Bawendi
本文描述了由量子点和硫菁J-聚集体组成的薄膜的溶液制备，利用量子点的尺寸可调发射和固体状态下J-聚集体的窄的、强的吸收。这些共混膜表现出从J聚集体到量子点的90%的能量转移效率，并且可以均匀地覆盖大面积。由于J-聚集体的存在使QD光致发光强度比单独的QD增强2.5倍，因此这些固态材料可用于下转换应用或光捕获的基础研究。
This paper describes the solution preparation of thin films composed of quantum dots and thiacyanine J-aggregates, making use of the size tunable emission of quantum dots and the narrow, intense absorption of J-aggregates in the solid state. These blended films exhibit 90% energy transfer efficiency from J-aggregates to quantum dots and can uniformly cover a large area. Because the presence of the J-aggregates enhances the QD photoluminescence intensity by 2.5-fold over QDs alone, these solid state materials may be useful in downconversion applications or in fundamental investigations of light harvesting.