Search Results - "Schmieder, Kenneth J"

Visualizing localized, radiative defects in GaAs solar cells by Hamadani, Behrang H., Stevens, Margaret A., Conrad, Brianna, Lumb, Matthew P., Schmieder, Kenneth J.

“…We have used a calibrated, wide-field hyperspectral imaging instrument to obtain absolute spectrally and spatially resolved photoluminescence images in high…”
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Effect of Growth Temperature on GaAs Solar Cells at High MOCVD Growth Rates by Schmieder, Kenneth J., Armour, Eric A., Lumb, Matthew P., Yakes, Michael K., Pulwin, Ziggy, Frantz, Jesse, Walters, Robert J.

“…Increasing epitaxial growth rate is an important path toward III-V solar cell cost reductions; however, photovoltaic device performance has been shown to…”
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GaSb‐Based Solar Cells for Full Solar Spectrum Energy Harvesting by Lumb, Matthew P., Mack, Shawn, Schmieder, Kenneth J., González, María, Bennett, Mitchell F., Scheiman, David, Meitl, Matthew, Fisher, Brent, Burroughs, Scott, Lee, Kyu‐Tae, Rogers, John A., Walters, Robert J.

“…In this work, a multijunction solar cell is developed on a GaSb substrate that can efficiently convert the long‐wavelength photons typically lost in a…”
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InP-Based Tunnel Junctions for Microconcentrator Photovoltaics by Schmieder, Kenneth J., Mood, Thomas C., Armour, Eric A., Bennett, Mitchell F., Stevens, Margaret A., Diaz, Martin, Pulwin, Ziggy, Lumb, Matthew P.

“…To further improve the performance of mechanically stacked microconcentrator photovoltaic devices, we have studied high-transparency tunnel junctions for…”
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Design and demonstration of ultra-compact microcell concentrating photovoltaics for space by Ruud, Christian J., Grede, Alex J., Chang, Jan-Kai, Lumb, Matthew P., Schmieder, Kenneth J., Fisher, Brent, Rogers, John A., Gordon, Jeffrey M., Giebink, Noel C.

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What Limits the Voltage of GaAs Photovoltaic Devices under Low Indoor Light? by Hamadani, Behrang H., Stevens, Margaret A., Lumb, Matthew P., Schmieder, Kenneth J.

“…The external radiative efficiency of a photovoltaic device is a useful metric to compare different photovoltaic technologies and material systems. However,…”
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Selective Etching of 6.1 Å Materials for Transfer-Printed Devices by Stevens, Margaret A., Nolde, Jill A., Mack, Shawn, Schmieder, Kenneth J.

“…To enable the micro-transfer printing of GaSb-based multijunction solar cells, we explored methods to maximize etch selectivity between InAsSb and AlGa(As)Sb…”
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Towards Transfer Printing GaSb Membranes Using Selective Etchants by Stevens, Margaret A, Nolde, Jill A, Mack, Shawn, Mood, Thomas C, Schmieder, Kenneth J.

“…To support micro-transfer printing of antimonide photovoltaics, we characterized the effectiveness of two selective etchants. Using 2 μm GaSb membranes as a…”
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Hyperspectral Imaging of Localized, Optically-Active Defects in GaAs Solar Cells by Hamadani, Behrang H., Stevens, Margaret A., Conrad, Brianna, Lumb, Matthew P., Armour, Eric, Schmieder, Kenneth J.

“…A novel hyperspectral imaging instrument with dual electroluminescence and photoluminescence capability was used to image and analyze localized radiative…”
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Assessing epitaxial regrowth material quality on a micro-transfer printed GaAs substrate by Schmieder, Kenneth J., Lumb, Matthew P., Bennett, Mitchell F., Haughn, Chelsea R., Mack, Shawn, Yakes, Michael K., Maximenko, Sergey I., Walters, Robert J.

“…•Epitaxial regrowth accomplished on a membrane that was removed from its native substrate.•Power-dependent photoluminescence shows comparable recombination…”
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InP-Based Tunnel Junctions for Micro-Concentrator Photovoltaics by Schmieder, Kenneth J, Mood, Thomas C, Armour, Eric A, Bennett, Mitchell F, Stevens, Margaret A, Diaz, Martin, Pulwin, Ziggy, Lumb, Matthew P

“…To further improve the performance of mechanically stacked micro-concentrator photovoltaic devices, we have studied tunnel junctions for inclusion in triple…”
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Photovoltaics on Transfer Printed III-V Virtual Substrates by Schmieder, Kenneth J., Lumb, Matthew P., Bennett, Mitchell F., Tomasulo, Stephanie, Yakes, Michael K., Mack, Shawn, Moore, James E., Walters, Robert J.

“…We demonstrate a novel concept for III-V engineered substrate cost reduction that does not rely on chemical-mechanical polishing or low-throughput release…”
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Modeling of Partial Shading Tolerance in Micro Concentrator Photovoltaic Modules by Moore, James E., Schmieder, Kenneth J., Wagner, Wolfgang, Lumb, Matthew P.

“…Micro-concentrator photovoltaics (μ-CPV) may provide a cost effective means of producing terrestrial solar power with high area efficiency. By printing CPV…”
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High Growth Rate Rear-Junction GaAs Solar Cell with a Distributed Bragg Reflector by Stevens, Margaret A., Lumb, Matthew P., Armour, Eric A., Bennett, Mitchell F., Pulwin, Ziggy, Frantz, Jesse A., Myers, Jason, Walters, Robert J., Schmieder, Kenneth J.

“…Fast epitaxial growth is an attractive method for reducing III-V photovoltaic device cost. Here, we grow a high-performance, rear-junction GaAs solar cell at 1…”
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Low-Cost Handle Study for Photovoltaics on Transfer Printed Virtual Substrates by Schmieder, Kenneth J, Nolde, Jill A, Steiner, Myles A, Bennett, Mitchell F, Myers, Jason, Frantz, Jesse A, Lumb, Matthew P

“…This work expands upon previous research related to transfer printed virtual substrates: a technique for generating low-cost engineered substrates that is not…”
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A micro-concentrator photovoltaic module incorporating a bifacial silicon solar cell for direct and diffuse light capture by Lumb, Matthew P., Meitl, Matt, Carter, Jim, Samarskiy, Miroslav, Burroughs, Scott, Schmieder, Kenneth J., Mood, Thomas C., Bennett, Mitchell F., Taploo, Anmol, Moore, James E., Scheiman, David, Armour, Eric, Fisher, Brent

“…In this paper, we report findings from a micro CPV module, employing 170 μm GaAs-based 2J CPV cells, assembled on glass substrates using micro-transfer…”
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Micro-Transfer Printer-Assembled Five Junction CPV Microcell Development by Schmieder, Kenneth J., Ruppalt, Laura, Pulwin, Ziggy, Burroughs, Scott, Lumb, Matthew P., Mood, Thomas C., Meitl, Matthew A., Fisher, Brent, Carter, Jim, Bennett, Mitchell F., Armour, Eric A., Diaz, Martin, Kotulak, Nicole A.

“…We have developed multijunction solar cells on both GaAs and InP platforms to split the solar spectrum efficiently among subcells that maintain lattice-match…”
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GaAs Solar Cells Grown on Sapphire with Multi-Layer Transfer Printed Virtual Substrates by Schmieder, Kenneth J., Walters, Robert J., Lumb, Matthew P., Nolde, Jill A., Bennett, Mitchell F., Tomasulo, Stephanie, Yakes, Michael K., Mack, Shawn C., Frantz, Jesse A., Myers, Jason

“…Transfer printed virtual substrates (TPVS) is a promising technique for drastic III-V substrate cost reduction. In this work, we grew a three-period stack of…”
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Analysis of GaAs solar cells at High MOCVD growth rates by Schmieder, Kenneth J., Yakes, Michael K., Bailey, Christopher G., Pulwin, Ziggy, Lumb, Matthew P., Hirst, Louise C., Gonzalez, Maria, Hubbard, Seth M., Ebert, Chris, Walters, Robert J.

“…Single junction GaAs solar cells grown by MOCVD are fabricated over a range of growth rates targeting up to 56 μm/hr in order to evaluate the effect on…”
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GaInP window layers for GaAsP on SiGe/Si single and dual-junction solar cells by Schmieder, Kenneth J., Gerger, Andrew, Pulwin, Ziggy, Li Wang, Diaz, Martin, Curtin, Michael, Ebert, Chris, Lochtefeld, Anthony, Opila, Robert L., Barnett, Allen

“…GaAsP solar cells have been grown on Si substrates facilitated by a SiGe graded buffer layer. Here, single-junction p+/n GaAsP and tandem n+/p GaAsP/SiGe solar…”
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