Wafer-Scale Geiger-mode Silicon Photomultiplier Arrays Fabricated Using Domestic CMOS Fab

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$150,000.00
Award Year:
2011
Program:
SBIR
Phase:
Phase I
Contract:
DE-FG02-11ER90164
Award Id:
n/a
Agency Tracking Number:
97647
Solicitation Year:
2011
Solicitation Topic Code:
61 a
Solicitation Number:
DE-FOA-0000413
Small Business Information
15985 NW Schendel Avenue, Beaverton, OR, 97006-6703
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
124348652
Principal Investigator:
Vinit Dhulla
Dr.
(971) 223-5646
vinitd@voxtel-inc.com
Business Contact:
George Williams
Mr.
(971) 223-5646
georgew@voxtel-inc.com
Research Institution:
Stub




Abstract
There is a need for developing a high-performance single photon avalanche photodiode (SPAD) detector array design, which can be fabricated using a domestic, high-volume commercial CMOS process on 200mm or greater wafers. Many of todays silicon photomultiplier (SiPM) devices are fabricated using dedicated fabs with custom processes. Current SiPM designs also have variable breakdown voltage, high dark count rates, high after-pulsing, high cross talk, and limited detector quantum efficiency. Unfortunately, large scale commercial CMOS processes are antithetical to fabricating high-performance imaging devices, especially Geiger-mode avalanche photodiodes (GmAPDs), which require substrates and doping profiles compatible with the high electric fields necessary to sustain carrier avalanche. Low cost methods are needed to fabricate wafer-scale silicon photomultipliers using high volume CMOS fabs. Silicon GmAPD arrays will be designed for fabrication on a commercial CMOS fab. Building upon previous experience, devices will be modeled in 3D CAD tools, and a series of designed experiments will be performed to determine a design that can maintain high performance over large areas. Provisions for photocomposition will be included. The Si GmAPD arrays developed on the program will be made available to silicon photomultiplier developers. Commercial Applications and Other Benefits: The innovation will enable detectors for a wide range of applications including high-energy and nuclear physics, homeland security detection, medical imaging and scanning, time-of-flight measurement, SPECT, astronomy, and astrophysics

* information listed above is at the time of submission.

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