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Optical enhancement of the open-circuit voltage in high quality GaAs solar cells
The self-absorption of radiated photons increases the minority carrier concentration in semiconductor optoelectronic devices such as solar cells. This so-called photon recycling leads to an increaseExpand
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High-efficiency GaInP∕GaAs∕InGaAs triple-junction solar cells grown inverted with a metamorphic bottom junction
The authors demonstrate a thin, Ge-free III–V semiconductor triple-junction solar cell device structure that achieved 33.8%, 30.6%, and 38.9% efficiencies under the standard 1sun global spectrum,Expand
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III-N-V semiconductors for solar photovoltaic applications
III–N–V semiconductors are promising materials for use in next-generation multijunction solar cells because these materials can be lattice matched to substrates such as GaAs, Ge and Si, with a rangeExpand
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Dilute nitride GaInNAs and GaInNAsSb solar cells by molecular beam epitaxy
Dilute nitride films with a roughly 1 eV band gap can be lattice-matched to gallium arsenide and germanium, and therefore could become a critical component in next-generation multijunction solarExpand
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40.8% efficient inverted triple-junction solar cell with two independently metamorphic junctions
A photovoltaic conversion efficiency of 40.8% at 326 suns concentration is demonstrated in a monolithically grown, triple-junction III–V solar cell structure in which each active junction is composedExpand
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Enhanced external radiative efficiency for 20.8 efficient single-junction GaInP solar cells
We demonstrate 1.81 eV GaInP solar cells approaching the Shockley-Queisser limit with 20.8% solar conversion efficiency, 8% external radiative efficiency, and 80–90% internal radiative efficiency atExpand
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29.5%‐efficient GaInP/GaAs tandem solar cells
We report on multijunction GaInP/GaAs photovoltaic cells with efficiencies of 29.5% at 1‐sun concentration and air mass (AM) 1.5 global and 25.7% 1‐sun, AM0. These values represent the highestExpand
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Analysis of Multijunction Solar Cell Current–Voltage Characteristics in the Presence of Luminescent Coupling
Luminescent coupling in multijunction solar cells is the phenomenon in which a junction in forward bias radiates photons that are absorbed in and converted to photocurrent by the junction beneath theExpand
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Temperature-dependent measurements of an inverted metamorphic multijunction (IMM) solar cell
The inverted metamorphic multijunction (IMM) solar cell has demonstrated efficiencies as high as 40.8% at 25°C and 326 suns concentration. The actual operating temperature in a commercial module,Expand
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Structural changes during annealing of GaInAsN
The alloy GaInAsN has great potential as a lower-band-gap material lattice matched to GaAs, but there is little understanding of what causes its poor optoelectronic properties and why these improveExpand
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