Space-separated quantum cutting with silicon nanocrystals for photovoltaic applications

Timmerman, D; Izeddin, I; Stallinga, P; Yassievich, IN; Gregorkiewicz, T

Space-separated quantum cutting with silicon nanocrystals for photovoltaic applications

Timmerman, D Izeddin, I Stallinga, P Yassievich, IN Gregorkiewicz, T

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Publication Type:: Journal Article
Citation:: Nature Photonics, 2008, 2 (2), pp. 105 - 109
Issue Date:: 2008-02-01

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Field	Value	Language
dc.contributor.author	Timmerman, D	en_US
dc.contributor.author	Izeddin, I	en_US
dc.contributor.author	Stallinga, P	en_US
dc.contributor.author	Yassievich, IN	en_US
dc.contributor.author	Gregorkiewicz, T	en_US
dc.date.issued	2008-02-01	en_US
dc.identifier.citation	Nature Photonics, 2008, 2 (2), pp. 105 - 109	en_US
dc.identifier.issn	1749-4885	en_US
dc.identifier.uri	http://hdl.handle.net/10453/34514
dc.description.abstract	For optimal energy conversion in photovoltaic devices (electricity to and from light) one important requirement is that the full energy of the photons is used. However, in solar cells, a single electron-hole pair of specific energy is generated when the incoming photon energy is above a certain threshold, with the excess energy being lost to heat. In the so-called quantum-cutting process, a high-energy photon can be divided into two, or more, photons of lower energy. Such manipulation of photon quantum size can then very effectively increase the overall efficiency of a device. In the current work, we demonstrate (space-separated) photon cutting by silicon nanocrystals, in which nearby Er3 ions and neighbouring nanocrystals are used to detect this effect. © 2008 Nature Publishing Group.	en_US
dc.relation.ispartof	Nature Photonics	en_US
dc.relation.isbasedon	10.1038/nphoton.2007.279	en_US
dc.subject.classification	Optoelectronics & Photonics	en_US
dc.title	Space-separated quantum cutting with silicon nanocrystals for photovoltaic applications	en_US
dc.type	Journal Article
utslib.citation.volume	2	en_US
utslib.for	01 Mathematical Sciences	en_US
utslib.for	02 Physical Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	closed_access
pubs.issue	2	en_US
pubs.publication-status	Published	en_US
pubs.volume	2	en_US

Abstract:

For optimal energy conversion in photovoltaic devices (electricity to and from light) one important requirement is that the full energy of the photons is used. However, in solar cells, a single electron-hole pair of specific energy is generated when the incoming photon energy is above a certain threshold, with the excess energy being lost to heat. In the so-called quantum-cutting process, a high-energy photon can be divided into two, or more, photons of lower energy. Such manipulation of photon quantum size can then very effectively increase the overall efficiency of a device. In the current work, we demonstrate (space-separated) photon cutting by silicon nanocrystals, in which nearby Er3 ions and neighbouring nanocrystals are used to detect this effect. © 2008 Nature Publishing Group.

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http://hdl.handle.net/10453/34514