Search Results - "Lillington, D.R."

Development and characterization of high-efficiency Ga/sub 0.5/In/sub 0.5/P/GaAs/Ge dual- and triple-junction solar cells by Karam, N.H., King, R.R., Cavicchi, B.T., Krut, D.D., Ermer, J.H., Haddad, M., Li Cai, Joslin, D.E., Takahashi, M., Eldredge, J.W., Nishikawa, W.T., Lillington, D.R., Keyes, B.M., Ahrenkiel, R.K.

“…This paper describes recent progress in the characterization, analysis, and development of high-efficiency, radiation-resistant Ga/sub 0.5/In/sub 0.5/P/GaAs/Ge…”
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High-efficiency GaAs/Ge monolithic tandem solar cells by Tobin, S.P., Vernon, S.M., Bajgar, C., Haven, V.E., Geoffroy, L.M., Lillington, D.R.

“…Tandem cells of GaAs grown by metalorganic chemical vapor deposition (MOCVD) on thin Ge to address both higher efficiency and reduced weight are discussed…”
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Triple-junction solar cell efficiencies above 32%: the promise and challenges of their application in high-conceniration-ratio PV systems by Cotal, H.L., Lillington, D.R., Ermer, J.H., King, R.R., Karam, N.H., Kurtz, S.R., Friedman, D.J., Olson, J.M., Ward, J.S., Duda, A., Emery, K.A., Moriarty, T.

“…Results from Spectrolab-grown Ga/sub 0.5/In/sub 0.5/P/GaAs/Ge structures optimized for the AM1.5D spectrum are described along with progress toward developing…”
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The path to 1 GW of concentrator photovoltaics using multijunction solar cells by Sherif, R.A., King, R.R., Karam, N.H., Lillington, D.R.

“…This paper presents an overview of the status of the high-concentration photovoltaic (HCPV) module technology and discusses the steps required to take it from…”
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Next-generation, high-efficiency III-V multijunction solar cells by King, R.R., Karam, N.H., Ermer, J.H., Haddad, N., Colter, P., Isshiki, T., Yoon, H., Cotal, H.L., Joslin, D.E., Krut, D.D., Sudharsanan, R., Edmondson, K., Cavicchi, B.T., Lillington, D.R.

“…Next-generation solar cell approaches such as AlGaInP/GaAs/GaInNAs/Ge 4-junction cells, lattice-mismatched GaInP/GaInAs/Ge, concentrator cells, and improved…”
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Wide acceptance angle, non-imaging, triple junction based, 10/spl times/ composite space concentrator by Krut, D.D., Glenn, G.S., Bailor, B., Takahashi, M., Sherif, R.A., Lillington, D.R., Karam, N.H., Ortabasi, U.

“…A novel, wide acceptance angle, nonimaging, 10/spl times/, all-composite space concentrator array has been developed and prototyped as a possible lower cost…”
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Ge concentrator cells for III-V multijunction devices by Friedman, D.J., Olson, J.M., Ward, S., Moriarty, T., Emery, K., Kurtz, S., Duda, A., King, R.R., Cotal, H.L., Lillington, D.R., Ermer, J.H., Karam, N.H.

“…We identify a failure mode due to a photoactive back contact for Ge concentrator solar cells. This problem manifests itself as a leveling off and subsequent…”
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Development of terrestrial concentrator modules incorporating high-efficiency multi-junction cells by O'Neill, M.J., McDanal, A.J., Cotal, H.L., Sudharsanan, R., Krut, D.D., Ermer, J.H., Karam, N.H., Lillington, D.R.

“…This paper presents key results of an on-going program to develop terrestrial concentrator modules incorporating high-efficiency multi-junction (MJ)…”
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The development of Ge bottom cell for monolithic and stacked multi-junction applications by Krut, D.D., Cavicchi, B.T., Lillington, D.R.

“…Ge solar cells have applications in space solar systems as well as terrestrial concentrator systems. Progress in fabrication of Ge cells to work under GaAs is…”
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Effects of interfacial oxide layers on the performance of silicon Schottky-barrier solar cells by Lillington, D. R., Townsend, W. G.

“…Measurements have been made of the electrical and optical properties of Au–n-type silicon Schottky-barrier solar cells (SBSC) in which the metal and…”
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The design and evaluation of dual-junction GaInP/sub 2//GaAs solar cells for space applications by Cavicchi, B.T., Krut, D.D., Lillington, D.R., Kurtz, S.R., Olson, J.M.

“…The necessary design considerations for a space-qualified GaInP/sub 2//GaAs cell are addressed. Analyses are presented which indicate that, with the proper…”
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A new high volume MOVPE reactor for III-V solar cells by Ermer, J., Vijaykumar, P.S., Chang, K.I., Lillington, D.R., Cavicchi, B.T., Woelk, E., Strauch, G., Schmitz, D., Jurgensen, H.

“…A new MOVPE reactor is described which allows cost effective manufacturing of GaAs/Ge solar cells. The reactor, which has a batch size in excess of 0.25 m/sup…”
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Large area solar cells for future space power systems by Lillington, D.R., Cavicchi, B.T., Gillanders, M.S., Crotty, G.T., Krut, D.D.

“…Solar cells based on GaAs are required in order to reach the efficiencies required by space applications. It is shown that subject to certain boundary…”
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Optimization of silicon 8 cm8 cm wrapthrough space station cells for 'on orbit' operation by Lillington, D.R., Kukulka, J.R., Mason, A.V., Sater, B.L., Sanchez, J.

“…The optimization of space station solar cells for on-orbit performance is described. Design trades were performed in which back AR coating thickness was traded…”
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Cast polycrystalline silicon Schottky-barrier solar cells by Lillington, D. R., Townsend, W. G.

“…Measurements have been made of the electrical and optical properties of polycrystalline metal-insulator-semiconductor Schottky-barrier solar cells (MIS SBSC’s)…”
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GaAs on Ge cell and panel technology for advanced space flight application by Cavicchi, B.T., Lillington, D.R., Garlick, G.F.J., Glenn, G.S., Tobin, S.P.

“…Tandem junction GaAs/Ge solar cells measuring 2-cm*2-cm were fabricated with efficiencies up to 18.2% (AM0, 28 degrees C) using in-house grown material…”
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Production and qualification status of GaAs/Ge top/bottom contact solar cells by Gillanders, M.S., Krut, D.D., Vijayakumar, P.S., Mason, A.V., Glenn, G.S., Lillington, D.R., Cavicchi, B.T., Yang, H.T., Rolph, R.K.

“…The status of top/bottom contact GaAs/Ge solar cell production is described. Over 3000 equivalent 2 cm*4 cm cells have been processed on the manufacturing…”
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High efficiency GaAs/Ge monolithic tandem solar cells by Tobin, S.P., Vernon, S.M., Bajgar, C., Haven, V.E., Geoffroy, L.M., Sanfacon, M.M., Lillington, D.R., Hart, R.E., Emery, K.A., Matson, R.J.

“…Two-terminal monolithic tandem cells consisting of a GaAs solar cell grown epitaxially on a Ge solar cell substrate are very attractive for space power…”
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Large area solar cells for future space power systems by Lillington, D.R., Cavicchi, B.T., Gillanders, M.S., Crotty, G.T., Krut, D.D.

“…Space silicon solar cell technology has matured to the extent that large-area planar silicon cells can be fabricated in sizes up to 8 cm*8 cm with efficiencies…”
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