Search Results - "Boyer, Jacob T"

Analysis of Crystalline Defects Caused by Growth on Partially Planarized Spalled (100) GaAs Substrates by Boyer, Jacob T., Braun, Anna K., Schulte, Kevin L., Simon, John, Johnston, Steven W., Guthrey, Harvey L., Steiner, Myles A., Packard, Corinne E., Ptak, Aaron J.

“…We analyze the effect of growth on non-(100) surfaces resulting from incomplete planarization of spalled GaAs wafers on the defect structure of GaAs solar cell…”
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AlInP‐passivated III–V solar cells grown by dynamic hydride vapor‐phase epitaxy by Boyer, Jacob T., Schulte, Kevin L., Young, Matthew R., Ptak, Aaron J., Simon, John

“…We report the development of AlInP‐passivated solar cells grown by dynamic hydride vapor‐phase epitaxy (D‐HVPE) with AM1.5G efficiencies of 26.0% for…”
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Reduced Dislocation Introduction in III–V/Si Heterostructures with Glide-Enhancing Compressively Strained Superlattices by Boyer, Jacob T, Blumer, Ari N, Blumer, Zak H, Lepkowski, Daniel L, Grassman, Tyler J

“…The novel use of a GaAs y P1–y /GaP compressively strained superlattice (CSS) to provide enhanced control over misfit dislocation (MD) evolution and threading…”
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Si-matched BxGa1−xP grown via hybrid solid- and gas-source molecular beam epitaxy by Blumer, Zak H., Boyer, Jacob T., Blumer, Ari N., Lepkowski, Daniel L., Grassman, Tyler J.

“…The growth of BxGa1−xP alloys by hybrid solid/gas-source molecular beam epitaxy, with B supplied via the BCl3 gas precursor, is demonstrated. Compositional…”
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24% Single‐Junction GaAs Solar Cell Grown Directly on Growth‐Planarized Facets Using Hydride Vapor Phase Epitaxy by Braun, Anna K., Boyer, Jacob T., Schulte, Kevin L., McMahon, William E., Simon, John, Perna, Allison N., Packard, Corinne E., Ptak, Aaron J.

“…A 24%‐efficient single‐junction GaAs solar cell grown directly on a faceted, spalled (100) GaAs substrate after in situ planarization growth by hydride vapor…”
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23.4% monolithic epitaxial GaAsP/Si tandem solar cells and quantification of losses from threading dislocations by Lepkowski, Daniel L., Grassman, Tyler J., Boyer, Jacob T., Chmielewski, Daniel J., Yi, Chuqi, Juhl, Mattias K., Soeriyadi, Anastasia H., Western, Ned, Mehrvarz, Hamid, Römer, Udo, Ho-Baillie, Anita, Kerestes, Christopher, Derkacs, Daniel, Whipple, Steven G., Stavrides, Alex P., Bremner, Stephen P., Ringel, Steven A.

“…A 2-terminal, dual-junction, epitaxially integrated, GaAsP/Si tandem solar cell with an 3rd party certified efficiency of 23.4 % was fabricated via MOCVD…”
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Modeling and experimental demonstration of short-wavelength carrier collection enhancement in Ga0.51In0.49P solar cells using graded (AlzGa1-z)xIn1-xP window-emitter structures by Boyer, Jacob T., Lepkowski, Daniel L., Chmielewski, Daniel J., Grassman, Tyler J.

“…Ga0.51In0.49P solar cells with compositionally-graded (AlzGa1-z)xIn1-xP window/emitter structures were grown via molecular beam epitaxy using a digital alloy…”
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Design for Increased Defect Tolerance in Metamorphic GaAsP-on-Si Top Cells by Kasher, Tal, Kaliszewski, Lauren M., Lepkowski, Daniel L., Boyer, Jacob T., Baan, Marzieh, Grassman, Tyler J., Ringel, Steven A.

“…To date, the greatest performance limiter in monolithic III-V/Si tandem (multijunction) solar cells, like GaAs<inline-formula><tex-math…”
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In Situ Smoothing of Facets on Spalled GaAs(100) Substrates during OMVPE Growth of III–V Epilayers, Solar Cells, and Other Devices: The Impact of Surface Impurities/Dopants by McMahon, William E., Braun, Anna K., Perna, Allison N., Coll, Pablo G., Schulte, Kevin L., Boyer, Jacob T., Neumann, Anica N., Geisz, John F., Warren, Emily L., Ptak, Aaron J., Merkle, Arno P., Bertoni, Mariana I., Packard, Corinne E., Steiner, Myles A.

“…One possible pathway toward reducing the cost of III–V solar cells is to remove them from their growth substrate by spalling fracture, and then reuse the…”
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The Critical Role of AlInP Window Design in III-V Rear-Emitter Solar Cells by Lepkowski, Daniel L., Kasher, Tal, Boyer, Jacob T., Chmielewski, Daniel J., Grassman, Tyler J., Ringel, Steven A.

“…This article highlights the critical role of window design on short circuit carrier collection in rear-emitter solar cells, as demonstrated through modeling…”
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Investigation of Rear-Emitter GaAs0.75P0.25 Top Cells for Application to III-V/Si Tandem Photovoltaics by Lepkowski, Daniel L., Boyer, Jacob T., Chmielewski, Daniel J., Silvaggio, Amber C., Ringel, Steven A., Grassman, Tyler J.

“…A rear-emitter (rear-junction) n-on-p+ device design was investigated for use in metamorphic monolithic III-V/Si tandem solar cells as an alternative to the…”
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Metamorphic Tunnel Junctions Grown Via MOCVD Designed for GaAs0.75P0.25/Si Tandem Solar Cells by Chmielewski, Daniel J., Lepkowski, Daniel L., Boyer, Jacob T., Grassman, Tyler J., Ringel, Steven A.

“…A high-performance metamorphic Al 0.2 Ga 0.8 As 0.75 P 0.25 /GaAs 0.75 P 0.25 heterojunction tunnel junction structure was developed for application to…”
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Effect of Surface Morphology on GaAs Solar Cells Grown on Planarized Spalled (100) GaAs Substrates by Braun, Anna K., Boyer, Jacob T., Schulte, Kevin L., Simon, John, Johnston, Steve W., Steiner, Myles A., Packard, Corinnne E., Ptak, Aaron J.

“…We analyze the effect of surface morphology created by planarizing spalled GaAs wafers on GaAs solar cells grown by HVPE. Controlled spalling of (100)-oriented…”
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III-V Solar Cells Grown Directly on V-Groove Si Substrates by Saenz, Theresa E., Boyer, Jacob T., Mangum, John S., Neumann, Anica N., Steiner, Myles A., France, Ryan M., McMahon, William E., Zimmerman, Jeramy D., Warren, Emily L.

“…We report on the development of GaAs solar cells directly grown on nanopatterned V-groove Si substrates by metalorganic vapor-phase epitaxy (MOVPE). A low…”
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GaAs Solar Cells Grown on Acoustically-Spalled GaAs Substrates with 27% Efficiency by Schulte, Kevin L, Johnston, Steve W, Braun, Anna K, Boyer, Jacob T, Neumann, Anica N, McMahon, William E, Young, Michelle, Coll, Pablo Guimera, Bertoni, Mariana I, Warren, Emily L, Steiner, Myles A

“…We report the growth of high-efficiency GaAs solar cells grown by organometallic vapor phase epitaxy on non-flat substrate surfaces created by acoustic…”
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Comparative Study of ∼2.05 eV Lattice-Matched and Metamorphic (Al)GaInP Solar Cells Grown by MOCVD by Chmielewski, Daniel J., Lepkowski, Daniel L., Boyer, Jacob T., Grassman, Tyler J., Ringel, Steven A.

“…This work investigates two conceptually different approaches, both based on the AlGaInP alloy family, to produce metal-organic chemical vapor deposition grown…”
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In-Situ Smoothing of Facets on Spalled GaAs(100) Substrates During OMPVE Growth of III-V Solar Cells by McMahon, William E., Braun, Anna K., Perna, Allison N., Coll, Pablo G., Schulte, Kevin L., Boyer, Jacob T., Neumann, Anica N., Geisz, John F., Warren, Emily L., Ptak, Aaron J., Merkle, Arno P., Bertoni, Mariana I., Bertoni, I., Packard, Corinne E., Steiner, Myles A.

“…This presentation describes how faceted GaAs(100) surfaces can be flattened during organometallic vapor-phase epitaxy (OMVPE) growth, by systematically…”
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Recent Advances in GaAsP/Si Top Cell Enabling 27% Tandem Efficiency by Lepkowski, Daniel L., Kasher, Tal, Boyer, Jacob T., Blumer, Zak H., Yi, Chuqi, Juhl, Mattias K., Soeriyadi, Anastasia H., Mehrvarz, Hamid, Romer, Udo, Ho-Baillie, Anita, Bremner, Stephen P., Ringel, Steven A., Grassman, Tyler J.

“…Historically, the performance of monolithically-integrated GaAsP/Si tandem solar cells has been limited by the presence of elevated TDD in the GaAsP subcell…”
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Development and Characterization of III-V/Si Multijunction Photovoltaics for Space Application by Boyer, Jacob T., Lepkowski, Daniel L., Chmielewski, Daniel J., Derkacs, Daniel, Kerestes, Christopher, Stavrides, Alex, Whipple, Steven, Ringel, Steven A., Grassman, Tyler J.

“…III-V/Si dual junction (2J) tandem photovoltaics with potential for eventual application to (aero)space deployment have been under development. Full 2J tandem…”
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The Critical Role of Window Design in Rear-Emitter Solar Cells by Lepkowski, Daniel L., Kasher, Tal, Boyer, Jacob T., Chmielewski, Daniel J., Grassman, Tyler J., Ringel, Steven A.

“…This work highlights the critical role of window design on short circuit carrier collection in rear-emitter GaAs 0.75 P 0.25 solar cells. If the window design…”
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