High Efficiency Multiple Wavelength Upconverting Nanophosphors

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$100,000.00
Award Year:
2009
Program:
SBIR
Phase:
Phase I
Contract:
DE-FG02-09ER85295
Agency Tracking Number:
90497
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Boston Applied Technologies, Incorporated
6F Gill Street, Woburn, MA, 01801
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
114584175
Principal Investigator:
Xiaomei Guo
Ms.
(781) 935-2800
xmguo@bostonati.com
Business Contact:
Yingyin Zou
Dr.
(781) 935-2800
kzou@bostonati.com
Research Institution:
n/a
Abstract
Although fluorescent lamps (FLs) convert more input power to visible light than incandescent lamps, even the best of today¿s T-8 FLs convert only about 28% of consumed power into visible radiation. This inefficiency is partially attributed to unwanted infrared emissions (~37%). Therefore, one of the key research efforts is to develop highly efficient up-converting phosphors to collect those wasted IR emissions and convert their radiation into the visible range. This project will develop monodispersed and surface-passivated rare-earth-doped up-converting nanophosphors through a wet chemical process, which has been demonstrated to be cost-effective and reliable in the production of nanocrystals. This approach should be especially favorable for increasing the doping concentration threshold, which is essential for the enhancement of up-conversion efficiency. Commercial Applications and other Benefits as described by the awardee: The up converting phosphors should find use in fluorescent and incandescent lamp applications, not only increasing lamp efficiency and efficacy but also reducing the usage of harmful mercury. Highly-efficient up-converting nanophosphors also could be applied to LEDs for solid-state lighting and to solar energy applications because the solar spectrum has a significant IR component.

* information listed above is at the time of submission.

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