Design of an achievable, all lattice-matched multijunction solar cell using InGaAlAsSb
RJ Walters, M Gonzalez, JG Tischler… - 2011 37th IEEE …, 2011 - ieeexplore.ieee.org
2011 37th IEEE Photovoltaic Specialists Conference, 2011•ieeexplore.ieee.org
A design for a realistically achievable, multijunction solar cell based on all lattice-matched
materials with>; 50% projected efficiencies under concentration is presented. Using
quaternary materials such as InAlAsSb and InGaAlAs at stochiometries lattice-matched to
InP substrates, direct bandgaps ranging from 0.74 eV up to~ 1.8 eV, ideal for solar energy
conversion, can be achieved. In addition, multi-quantum well structures are used to reduce
the band-gap further to<; 0.7 eV. A triple-junction (3J) solar cell using these materials is …
materials with>; 50% projected efficiencies under concentration is presented. Using
quaternary materials such as InAlAsSb and InGaAlAs at stochiometries lattice-matched to
InP substrates, direct bandgaps ranging from 0.74 eV up to~ 1.8 eV, ideal for solar energy
conversion, can be achieved. In addition, multi-quantum well structures are used to reduce
the band-gap further to<; 0.7 eV. A triple-junction (3J) solar cell using these materials is …
A design for a realistically achievable, multijunction solar cell based on all lattice-matched materials with >;50% projected efficiencies under concentration is presented. Using quaternary materials such as InAlAsSb and InGaAlAs at stochiometries lattice-matched to InP substrates, direct bandgaps ranging from 0.74eV up to ~1.8eV, ideal for solar energy conversion, can be achieved. In addition, multi-quantum well structures are used to reduce the band-gap further to <;0.7 eV. A triple-junction (3J) solar cell using these materials is described, and in-depth modeling results are presented showing realistically achievable efficiencies of AM1.5D 500X of η ~ 53% and AM0 1 Sun of η~ 37%.
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