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Next-Generation 35-40% Efficient Multijunction Solar Cell: Development of High…

Award Information

Department of Defense
Air Force
Award ID:
Program Year/Program:
2002 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Brimrose Corporation of America
19 Loveton Circle Hunt Valley Loveton Center Sparks, MD 21152-9201
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2002
Title: Next-Generation 35-40% Efficient Multijunction Solar Cell: Development of High Efficiency (>35%) and Radiation Resistant 4-Junction Solar Cells on InP
Agency / Branch: DOD / USAF
Contract: F29601-02-C-0062
Award Amount: $100,000.00


"Brimrose Corporation has identified 0.75, 1.0, 1.5 and 1.91 eV band gap III-V semiconductor materials, lattice matched to InP for producing high efficiency 4- junction solar cells for space application. Phase I objective are follows: (1) Optimize theepitaxial growth of 0.75 and 1.0 eV materials and tunnel junction inter connecting these two band gap solar cells and fabricate a high efficiency single junction solar cell and characterize it to prove the concept and (2) Optimize through modeling andepitaxial growth results the 4-junction solar cell device structure. Phase II objectives are : (1) Optimize the growth conditions for producing the optimized 4-junction solar cell structure and subsequently fabricate and test the 4-junction device. (2)optimize the conditions for large area processing (3"diameter or more) and (3) Design a inter connected dual chamber MOCVD multi wafer production reactor for producing these 4-junction solar cell structure in a continuous manner without the problem ofmemory effects. Samples of single junction cell and details of optimized 4-junction solar cell structure through modeling will be provided to Air Force at the end of Phase I program. The success of the research will be the availability of very highefficiency 4-junction solar cell for space application. The major spin off is the use of this solar cell system for production of high efficiency concentrator terrestrial solar energy conversion system."

Principal Investigator:

G.v. Jagannathan
Senior Scientist

Business Contact:

Diane C. Murray
Contract Coordinator
Small Business Information at Submission:

Brimrose Corp.Of America
5024 Campbell Blvd.,, Suite E Baltimore, MD 21236

EIN/Tax ID: 521210230
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No