Upconverting Films

Award Information
Agency: Department of Defense
Branch: Defense Advanced Research Projects Agency
Contract: W31P4Q-08-C-0211
Agency Tracking Number: 07SB2-0488
Amount: $99,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2008
Solicitation Year: 2007
Solicitation Topic Code: SB072-034
Solicitation Number: 2007.2
Small Business Information
4301 West Markham Street, Little Rock, AR, 72205
DUNS: 155828861
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Yunjun Wang
 Senior Scientist
 (479) 799-3368
Business Contact
 Yunjun Wang
Title: CEO
Phone: (479) 799-3368
Email: yjwang@mesolight.com
Research Institution
This Small Business Innovation Research (SBIR) Phase I project will develop highly bright and stable doped nanocrystal/polymer nanocomposite thin film as light up-converting medium for infrared light visualization applications. Upconversion of higher energy light from lower energy radiation are realized through the use of trivalent lanthanide ions, actinide ions, or transition metals doped in a solid-state host. Oxides and halides are the two commonly used hosting materials for upconversion ions. In halides, the nonradiative rate is low and the upconversion luminescence efficiency is high. However, many halides are sensitive to moisture and unstable in air. Oxides are stable in air, but the upconversion of oxides is usually very low due to the rapid relaxation induced by large phonon energy. In this SBIR project, several doped semiconductor nanocrystals with the high upconversion efficiency and stability will be developed as the upconversion medium. These nanocrystals will be dispersed into optically transparent polymer matrices through an in situ polymerization process to form an upconversion thin film that can be used in infrared visualization instruments.

* Information listed above is at the time of submission. *

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