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Large-Area, Solid-State Photomultiplier for Ultraviolet Detection

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX16CP39P
Agency Tracking Number: 155768
Amount: $124,892.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: S1.04
Solicitation Number: N/A
Solicitation Year: 2016
Award Year: 2016
Award Start Date (Proposal Award Date): 2016-06-10
Award End Date (Contract End Date): 2016-12-09
Small Business Information
44 Hunt Street
Watertown, MA 02472-4699
United States
DUNS: 000000000
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 James Christian
 Senior Scientist
 (617) 668-6897
Business Contact
 Carmen Danforth
Title: Business Official
Phone: (617) 668-6846
Research Institution

To detect air fluorescence generated from cosmic rays with energies exceeding 1019 eV, which are rare events that produce small light flashes at the detector, a large-area, high sensitivity UV (300-400 nm), single-photon detector is needed. Radiation Monitoring Devices, Inc. (RMD), proposes to design and develop large-area solid-state photomultipliers (SSPMs) based on wide band-gap materials. As the intrinsic carrier concentration is directly related to the band gap of the material, the thermally generated dark current associated with WBG materials will be much lower than silicon for a sufficiently small defect density in the bulk material. The proposed WBG SSPMs will have high gain (105-106), low noise (100 times lower than similar size Si based device), fast response (<5ns), high detection efficiency (>50%) and sensitivity to a single photoelectron at wavelengths between 300 and 400 nm. In phase-I efforts we will explore different design options to improve detection efficiency, response time of the GPD structure. Based on improved GPD structures we will design and fabricate 3mm x 3mm WBG SSPMs. Finally, its basic performance will be evaluated and compared to SSPMs from other vendors and PMTs. The Phase-II effort will develop the large-area multi-element devices and the readout for imaging.

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

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