Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Zachary Carlin"'
Publikováno v:
IEEE Journal of Photovoltaics. 6:997-1003
Currently available materials for III–V multijunction solar cells lattice matched to GaAs covering the spectral range from 1.65 to 1.82 eV are composed of either immiscible quaternary alloys or contain aluminum. We report the fabrication of a novel
Autor:
Geoffrey K. Bradshaw, C. Zachary Carlin, Kenneth M. Edmondson, W. Hong, Joshua P. Samberg, Nasser H. Karam, Christopher M. Fetzer, Peter C. Colter, Salah M. Bedair
Publikováno v:
IEEE Journal of Photovoltaics. 4:614-619
Lattice-matched multiple quantum wells (MQWs) consisting of InxGa1-xAs wells with very thin GaAs0.2P0.8 barriers have been incorporated into a GaInP/GaAs tandem solar cell. InGaAs/GaAsP MQWs increase the short-circuit current of the GaAs cell by exte
Autor:
Joshua P. Samberg, Geoffrey K. Bradshaw, Peter C. Colter, Conrad Zachary Carlin, Salah M. Bedair
Publikováno v:
IEEE Transactions on Electron Devices. 60:2532-2536
Minority carrier transport across InGaAs/GaAsP multiple quantum wells is studied by measuring the response of p-i-n and n-i-p GaAs solar cell structures. It is observed that the spectral response depends critically upon the width of the GaAsP barrier
Autor:
Conrad Zachary Carlin, Geoffrey K. Bradshaw, Nadia A. El-Masry, Joshua P. Samberg, Salah M. Bedair, Peter C. Colter
Publikováno v:
IEEE Journal of Photovoltaics. 3:278-283
Multiple quantum wells (MQW) lattice matched to GaAs consisting of In0.14Ga0.76As wells balanced with GaAs0.24P0.76 barriers have been used to extend the absorption of GaAs subcells to longer wavelengths for use in an InGaP/GaAs/Ge triple-junction ph
Publikováno v:
2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC).
The development of high-performance high band gap tunnel junctions is critical for producing efficient multijunction photovoltaic cells that can operate at high solar concentrations. The n-InGaP/GaAs/p-AlGaAs TJ has been demonstrated to produce peak
Publikováno v:
2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC).
Quantum well structures hold tremendous potential in taking next step beyond current photovoltaic structures in achieving solar conversion efficiencies beyond 50%. In this paper we investigate p-i-n InGaP solar cells incorporating InGaAsP/InGaP strai
Publikováno v:
2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC).
Strain balanced multiple quantum wells (SBMQWs) lattice matched to GaAs consisting of InGaAsP wells balanced with InGaP barriers have been used to extend the absorption of In0.49Ga0.51P subcells to longer wavelengths for use in five and six junction
Publikováno v:
AIP Conference Proceedings.
The availability of high band gap (>1.9 eV) tunnel junctions (TJ) with large peak current densities (Jpk) is crucial for the development of multijunction photovoltaic cells that can operate at concentrations above 1000 suns. Existing TJ designs inclu
Autor:
Salah M. Bedair, Peter C. Colter, Geoffrey K. Bradshaw, Joshua P. Samberg, Conrad Zachary Carlin
Publikováno v:
Journal of Electronic Materials. 42:912-917
Strained-layer superlattice (SLS) structures, such as InGaAs/GaAsP lattice matched to GaAs, have shown great potential in absorption devices such as photodetectors and triple-junction photovoltaic cells. However, until recently they have been somewha
Publikováno v:
2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC).
A new strain-balanced multiple quantum well (MQW) approach to tune the Ga0.51In0.49P bandgap is demonstrated. This approach is based on Ga1−xInxP/Ga1−yInyP (x > y) or Ga1−xInxAszP1−z/Ga1−yInyP (x > y) structures, strain balanced and lattice