Plasmon-Induced Energy Transfer: When the Game Is Worth the Candle
Plasmon-Induced Energy Transfer: When the Game Is Worth the Candle
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DOI：
10.1021/acsphotonics.7b00527
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发表时间：
2017-08
期刊：
影响因子：
7
通讯作者：
P. Moroz;Natalia Razgoniaeva;Abigail Vore;H. Eckard;Natalia Kholmicheva;Ariana McDarby;A. Razgoniaev-A.-Razgoniae
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文献类型：
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作者：
P. Moroz;Natalia Razgoniaeva;Abigail Vore;H. Eckard;Natalia Kholmicheva;Ariana McDarby;A. Razgoniaev-A.-Razgoniae
贵金属纳米颗粒的上级消光特性长期以来被认为用于增强光捕获装置中的太阳能吸收。通过等离子体共振机制捕获的能量可以潜在地以激子或电荷载流子的形式转移到周围的半导体基质中，提供了一种有前途的光敏化策略。特别令人感兴趣的是等离子体近场能量转换，预计它将在光生载流子产生中产生显着的收益。然而，这种短程相互作用常常受到反向电子和能量转移过程的抑制，这掩盖了它的净效益。在这里，我们采用样品透射激发光致发光光谱，以确定在组装的Au纳米粒子和CdSe纳米晶体的等离子体激元诱导的能量转移（ET）的量子效率。本技术区分Au到CdSe ET的贡献从金属诱导的淬火过程，从而使…
The superior optical extinction characteristics of noble metal nanoparticles have long been considered for enhancing the solar energy absorption in light-harvesting devices. The energy captured through a plasmon resonance mechanism can potentially be transferred to a surrounding semiconductor matrix in the form of excitons or charge carriers, offering a promising light-sensitization strategy. Of particular interest is the plasmon near-field energy conversion, which is predicted to yield substantial gains in the photocarrier generation. Such a short-range interaction, however, is often inhibited by processes of backward electron and energy transfer, which obscure its net benefit. Here, we employ sample-transmitted excitation photoluminescence spectroscopy to determine the quantum efficiency for the plasmon-induced energy transfer (ET) in assemblies of Au nanoparticles and CdSe nanocrystals. The present technique distinguishes the Au-to-CdSe ET contribution from metal-induced quenching processes, thus enabl...