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High Efficiency Multiple Wavelength Upconverting Nanophosphors

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-09ER85295
Agency Tracking Number: 90497
Amount: $100,000.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: 17 b
Solicitation Number: DE-PS02-08ER08-34
Solicitation Year: 2008
Award Year: 2009
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
6F Gill Street
Woburn, MA 01801
United States
DUNS: 114584175
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Xiaomei Guo
 (781) 935-2800
Business Contact
 Yingyin Zou
Title: Dr.
Phone: (781) 935-2800
Research Institution

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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