Search Results - "Woojun Yoon"

Sintered CdTe Nanocrystal Thin Films: Determination of Optical Constants and Application in Novel Inverted Heterojunction Solar Cells by Woojun Yoon, Townsend, Troy K., Lumb, Matthew P., Tischler, Joseph G., Foos, Edward E.

“…In this paper, we report a novel heterojunction solar cell based on sintered CdTe and CdSe nanocrystal thin films using solution-based deposition. For the…”
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Modeling and analysis of high-performance, multicolored anti-reflection coatings for solar cells by Lumb, Matthew P, Yoon, Woojun, Bailey, Christopher G, Scheiman, David, Tischler, Joseph G, Walters, Robert J

“…In this work solar cell anti-reflection coatings tuned to give a specific hue under solar illumination are investigated. We demonstrate that it is possible to…”
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Advanced surface passivation of epitaxial boron emitters for high-efficiency ultrathin crystalline silicon solar cells by Yoon, Woojun, Moore, James, Lochtefeld, Anthony, Kotulak, Nicole, Scheiman, David, Barnett, Allen, Jenkins, Phillip, Walters, Robert

“…In this work, we demonstrated an enhanced surface passivation of epitaxially grown boron-doped Si emitters by replacing thermal SiO2 as a passivation layer…”
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Numerical simulation of crystalline silicon solar cells with full area metal oxide rear contacts by Moore, James E., Woojun Yoon, Jenkins, Phillip P., Walters, Robert J.

“…In this study, we investigate the effectiveness of MoO x and TiO 2 layers as minority carrier selective contacts in crystalline silicon solar cells. We use…”
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Inorganic Photovoltaic Devices Fabricated Using Nanocrystal Spray Deposition by Foos, Edward E., Yoon, Woojun, Lumb, Matthew P., Tischler, Joseph G., Townsend, Troy K.

“…Soluble inorganic nanocrystals offer a potential route to the fabrication of all-inorganic devices using solution deposition techniques. Spray processing…”
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Enhanced surface passivation of epitaxially grown emitters for high-efficiency ultrathin crystalline Si solar cells by Woojun Yoon, Lochtefeld, Anthony, Kotulak, Nicole, Scheiman, David, Barnett, Allen, Jenkins, Phillip, Walters, Robert

“…In this work, we demonstrated an enhanced surface passivation of epitaxially grown boron-doped emitters by replacing thermal SiO 2 as a passivation layer of p…”
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Vapor deposition of organic-inorganic hybrid perovskite thin-films for photovoltaic applications by Woojun Yoon, Boercker, Janice E., Lumb, Matthew P., Tischler, Joseph G., Jenkins, Phillip P., Walters, Robert J.

“…In this work, we developed CH 3 NH 3 PbI 3 perovskite films using sequential vapor deposition technique for photovoltaic applications. For thin PbI 2 films…”
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Electrical Measurement Under Atmospheric Conditions of PbSe Nanocrystal Thin Films Passivated by Remote Plasma Atomic Layer Deposition of Al O by Woojun Yoon, Smith, A. R., Foos, E. E., Boercker, J. E., Heuer, W. B., Tischler, J. G.

“…PbSe nanocrystal thin-film transistors (TFTs) were passivated using remote plasma atomic layer deposition (ALD) of a ~10 nm thick Al 2 O 3 film at 150 °C. By…”
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Modeling and analysis of multicolored anti-reflection coatings with high transmittance for different solar cell materials by Lumb, Matthew P., Woojun Yoon, Bailey, Christopher G., Scheiman, David, Tischler, Joseph G., Walters, Robert J.

“…In this work solar cell anti-reflection coatings tuned to give a specific hue under solar illumination are investigated. We demonstrate that it is possible to…”
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Sputtered indium tin oxide as a recombination layer formed on the tunnel oxide/poly-Si passivating contact enabling the potential of efficient monolithic perovskite/Si tandem solar cells by Yoon, Woojun, Scheiman, David, Ok, Young-Woo, Song, Zhaoning, Chen, Cong, Jernigan, Glenn, Rohatgi, Ajeet, Yan, Yanfa, Jenkins, Phillip

“…We focus on utilizing sputtered indium tin oxide (ITO) as a recombination layer, having low junction damage to an n-type silicon solar cell with a front-side…”
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High Remaining Factors in the Photovoltaic Performance of Perovskite Solar Cells after High-Fluence Electron Beam Irradiations by Song, Zhaoning, Li, Chongwen, Chen, Cong, McNatt, Jeremiah, Yoon, Woojun, Scheiman, David, Jenkins, Phillip P, Ellingson, Randy J, Heben, Michael J, Yan, Yanfa

“…Metal halide perovskite solar cells have progressed rapidly over the past decade, providing an exceptional opportunity for space photovoltaic (PV) power…”
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Enhanced Open-Circuit Voltage of PbS Nanocrystal Quantum Dot Solar Cells by Yoon, Woojun, Boercker, Janice E., Lumb, Matthew P., Placencia, Diogenes, Foos, Edward E., Tischler, Joseph G.

“…Nanocrystal quantum dots (QD) show great promise toward improving solar cell efficiencies through the use of quantum confinement to tune absorbance across the…”
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Tuning Device Interfaces for Improved Open Circuit Voltage in Wide-Bandgap Hybrid Perovskite Photovoltaics by Smith, Emily, Brittman, Sarah, Scheiman, David, Yoon, Woojun

“…Wide-bandgap hybrid organic-inorganic perovskite solar cells (PSCs) are of interest to the research community because of their potential for high performance,…”
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21.1% Efficient Space Perovskite/Si Four-Terminal Tandem Solar Cells by Yoon, Woojun, Song, Zhaoning, Chen, Cong, Scheiman, David, Yan, Yanfa

“…We report a space tandem solar cell enabling an enhanced power conversion efficiency with radiation tolerance in low radiation environments for space…”
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Photoluminescence Imaging and Characterization of Single and Multi-Junction Solar Cells by Lorentzen, Justin, Scheiman, David, Yoon, Woojun, Walters, Robert, Jenkins, Phillip

“…A method is proposed for large area, highly uniform photoluminescence imaging of single and multi-junction solar cells and solar cell arrays. Relative…”
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Impact of Nanocrystal Spray Deposition on Inorganic Solar Cells by Townsend, Troy K, Yoon, Woojun, Foos, Edward E, Tischler, Joseph G

“…Solution-synthesized inorganic cadmium telluride nanocrystals (∼4 nm; 1.45 eV band gap) are attractive elements for the fabrication of thin-film-based low-cost…”
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Wing Integrated Solar Array Performance Study Using Photoluminescence by Scheiman, David, Lorentzen, Justin, Yoon, Woojun, Hoheisel, Raymond, Jenkins, Phillip

“…Flight endurance and power are limiting factors affecting UAV applications today due to battery weight and capacity. Solar arrays integrated into the wing…”
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Spectrally Tunable Collimated Pulsed Solar Simulator by Scheiman, David, Lorentzen, Justin, Yoon, Woojun, Lumb, Matthew, Schmieder, Kenneth, Jenkins, Phillip

“…There is a need for characterization of multi-junction solar cell based test coupons under collimated sunlight for both terrestrial and space applications…”
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Impact of Deposition of ITO on Tunnel Oxide Passivating Poly-Si Contact by Yoon, Woojun, Ok, Young-Woo, Scheiman, David, Rohatgi, Ajeet, Jenkins, Phillip

“…In this study, we investigate the impact of the deposition of indium tin oxide (ITO) via DC magnetron sputtering on tunnel oxide passivating poly-Si contacts…”
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Rapid thermal annealing of InAlAsSb lattice-matched to InP for top cell applications by Gonzalez, Maria, Lumb, Matthew P., Hirst, Louise C., Tomasulo, Stephanie, Tischler, Joseph G., Woojun Yoon, Abell, Josh, Vurgaftman, Igor, Bennett, Mitchell F., Schmieder, Kenneth J., Kotulak, Nicole A., Yakes, Michael K., Meyer, Jerry R., Walters, Robert J.

“…The effect of rapid thermal annealing on the optical properties of In x Al 1-x As y Sb 1-y was analyzed and compared to that for In 0.52 Al 0.48 As. Initial…”
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