Search Results - "Ratta, Erik D."

20%-efficient epitaxial GaAsP/Si tandem solar cells by Fan, Shizhao, Yu, Zhengshan J., Sun, Yukun, Weigand, William, Dhingra, Pankul, Kim, Mijung, Hool, Ryan D., Ratta, Erik D., Holman, Zachary C., Lee, Minjoo L.

“…We present epitaxial 1.7 eV/1.1 eV GaAs0.75P0.25/Si tandem cells with an NREL-certified efficiency of 20.0%, enabled by a thermally stable tunnel junction…”
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Current-Matched III–V/Si Epitaxial Tandem Solar Cells with 25.0% Efficiency by Fan, Shizhao, Yu, Zhengshan J., Hool, Ryan D., Dhingra, Pankul, Weigand, William, Kim, Mijung, Ratta, Erik D., Li, Brian D., Sun, Yukun, Holman, Zachary C., Lee, Minjoo L.

“…III–V/Si epitaxial tandems with a 1.7-eV GaAsP top cell promise stable power conversion efficiencies above the fundamental limit of Si single-junction cells…”
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Effects of Graded Buffer Design and Active Region Structure on GaAsP Single-Junction Solar Cells Grown on GaP/Si Templates by Fan, Shizhao, Hool, Ryan D., Dhingra, Pankul, Kim, Mijung, Ratta, Erik D., Li, Brian D., Sun, Yukun, Yu, Zhengshan J., Holman, Zachary C., Lee, Minjoo L.

“…We investigated the effect of GaAs y P 1-y graded buffer layer design and cell structure on GaAsP solar cells grown on GaP/Si templates. Heavy Si doping in the…”
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Epitaxial GaAsP/Si Solar Cells with High Quantum Efficiency by Fan, Shizhao, Yu, Zhengshan J., Hool, Ryan D., Dhingra, Pankul, Weigand, William, Kim, Mijung, Ratta, Erik D., Li, Brian D., Sun, Yukun, Holman, Zachary C., Lee, Minjoo L.

“…We review recent progress in GaAsP/Si tandem cells and present a GaAsP/Si tandem cell with a high total short-circuit current density of 38.2 mA/cm 2 …”
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