NDLI: Resonant Energy Transfer in Si Nanocrystal Solids

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Resonant Energy Transfer in Si Nanocrystal Solids

Content Provider	Semantic Scholar
Author	Limpens, Rens Lesage, A. Stallinga, Peter Poddubny, Alexander N. Fujii, Minoru Gregorkiewicz, Tom
Copyright Year	2015
Abstract	Energy exchange between closely packed semiconductor quantum dots allows for long-range transfer of electronic energy and enables new functionalities of nanostructured materials with a huge application potential in photonics, optoelectronics, and photovoltaics. This is illustrated by impressive advances of quantum-dot solids based on nanocrystals (NCs) of direct bandgap materials, where this effect has been firmly established. Regretfully, the (resonant) energy transfer in close-packed ensembles of NCs remains elusive for silicon—the main material for electronic and photovoltaic industries. This is the subject of the present study in which we conclusively demonstrate this process taking place in dense dispersions of Si NCs in an SiO2 matrix. Using samples with different NC configurations, we can directly determine the wavelength dependent energy transfer rate and show that it (i) can be modulated by material parameters, and (ii) decreases with the NCs size, and thus being consistent with the energy flow p...
Starting Page	19565
Ending Page	19570
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1021/acs.jpcc.5b06339
Volume Number	119
Alternate Webpage(s)	https://pure.uva.nl/ws/files/30497975/acs.jpcc.pdf
Alternate Webpage(s)	https://doi.org/10.1021/acs.jpcc.5b06339
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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