Low-Noise, UV-to-SWIR Broadband Photodiodes for Large-Format Focal Plane Array Sensors

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX11CA91C
Agency Tracking Number: 094173
Amount: $600,000.00
Phase: Phase II
Program: SBIR
Awards Year: 2011
Solicitation Year: 2009
Solicitation Topic Code: S1.05
Solicitation Number: N/A
Small Business Information
NJ, Ewing, NJ, 08628-3200
DUNS: 824781769
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: Y
Principal Investigator
 Abhay Joshi
 Principal Investigator
 (609) 434-1311
Business Contact
 Abhay Joshi
Title: President&CEO
Phone: (609) 434-1311
Email: abhay@chipsat.com
Research Institution
Broadband focal plane arrays, operating in UV-to-SWIR wavelength range, are required for atmospheric monitoring of greenhouse gases. Currently, separate image sensors are used for different spectral sub-bands: GaN for UV, Si for visible, and InGaAs for SWIR, requiring expensive component-level integration for hyper-spectral imaging. Also, the size of the InGaAs focal plane arrays is currently limited by the InP substrate area.We propose to develop a 640 x 512 UV-to-SWIR focal plane array sensor using GaAs substrate having following photodiode performance: (1) Cut-on Wavelength = 0.25 micron; (2) Cut-off Wavelength = 2.5 micron; (3) RoA>35 Ohm-cm^2 at 300K; and (4) Quantum Eficiency>30% in UV (0.25 to 0.4 micron),>80% in Visible (0.4 to 0.9 micron), and>70% in IR (0.9 to 2.5 micron) subbands.Based on P.I.'s experience on SCIAMACHY, this project will enable one image sensor for 8 spectroscopic channels currently orbiting on European Space Agency's ENVISAT.

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

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government