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in situ irradiation and measurement of triple junction solar cells at low intensity, low temperature (lilt) conditionsThe performance of triple junction InGaP/(In)GaAs/Ge space solar cells was studied following high energy electron irradiation at low temperature. Cell characterization was carried out in situ at the irradiation temperature while using low intensity illumination, and, as such, these conditions reflect those found for deep space, solar powered missions that are far from the sun. Cell characterization consisted of I-V measurements and quantum efficiency measurements. The low temperature irradiations caused substantial degradation that differs in some ways from that seen after room temperature irradiations. The short circuit current degrades more at low temperature while the open circuit voltage degrades more at room temperature. A room temperature anneal after the low temperature irradiation produced a substantial recovery in the degradation. Following irradiation at both temperatures and an extended room temperature anneal, quantum efficiency measurement suggests that the bulk of the remaining damage is in the (In)GaAs sub-cell
Document ID
20150008646
Document Type
Conference Paper
External Source(s)
Authors
Harris, R.D.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Imaizumi, M.
(Japan Aerospace Exploration Agency Tsukuba, Japan)
Walters, R.J.
(Naval Research Lab. Washington, DC, United States)
Lorentzen, J.R.
(Naval Research Lab. Washington, DC, United States)
Messenger, S.R.
(Naval Research Lab. Washington, DC, United States)
Tischler, J.G.
(Naval Research Lab. Washington, DC, United States)
Ohshima, T.
(Japan Atomic Energy Research Inst. Takasaki, Japan)
Sato, S.
(Japan Atomic Energy Research Inst. Takasaki, Japan)
Sharps, P.R.
(Emcore Photovoltaics Albuquerque, NM, United States)
Fatemi, N.S.
(Emcore Photovoltaics Albuquerque, NM, United States)
Date Acquired
May 20, 2015
Publication Date
July 14, 2008
Subject Category
Energy Production and Conversion
Electronics and Electrical Engineering
Meeting Information
2008 IEEE Nuclear and Space Radiation Effects Conference(Tucson, AZ)
Distribution Limits
Public
Copyright
Other
Keywords
Quantum Efficiency
Radiation Damage
Triple Junction Solar Cells
Space Solar Cells