A New N+ Contact for Germanium Strip Detectors

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-03ER83759
Agency Tracking Number: 72157S03-I
Amount: $750,000.00
Phase: Phase II
Program: SBIR
Awards Year: 2004
Solitcitation Year: 2003
Solitcitation Topic Code: 37
Solitcitation Number: DOE/SC-0059
Small Business Information
Radiation Monitoring Devices, Inc.
44 Hunt Street, Suite 200, Watertown, MA, 02472
Duns: N/A
Hubzone Owned: Y
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Kanai Shah
 Mr.
 (617) 926-1167
 kshah@rmdinc.com
Business Contact
 Gerald Entine
Title: Dr.
Phone: (617) 926-1167
Email: gentine@rmdinc.com
Research Institution
N/A
Abstract
72157-Germanium strip detectors are very promising for X-ray and g-ray imaging with high resolution. However, existing n+ lithium electrodes prevent the full potential of high purity germanium (HPGe) strip detectors from being exploited in nuclear physics experiments as well as in many other applications. This project will investigate a new approach, using new semiconductor processing techniques, for the fabrication of n+ electrodes on HPGe crystals. The approach would be suitable for the fabrication of conventional HPGe designs as well as strip detectors. Phase I was conducted to demonstrate the feasibility of producing the HPGe strip detector using the new n+ contacts. In addition, the detection of X-rays with the new detector was demonstrated. Phase II will optimize processing conditions to enhance the performance of the new n+ contacts for HPGe detectors. Planar HPGe detectors with low capacitance and double sided strip detectors with orthogonal strips will be built using the new n+ contact technology. These devices will be extensively characterized for nuclear physics studies. Commercial Applications and Other Benefits as described by awardee: The proposed detectors would be very useful in nuclear and particle physics research. Additional applications include X-ray astronomy, synchrotron studies, medical imaging, nuclear non-proliferation, and non-destructive studies.

* information listed above is at the time of submission.

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