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  • Journal article
    Griffin P, Ballard I, Barnham K, Nelson J, Zachariou A, Button C, Hopkinson M, Pate Met al., 1997,

    Advantages of quantum well solar cells for TPV

    , Thermophotovoltaic Generation of Electricity, Pages: 411-422, ISSN: 0094-243X
  • Journal article
    Tsui E, Nelson J, Barnham K, Button C, Roberts JSet al., 1996,

    Determination of the quasi-fermi-level separation in single-quantum-well p-i-n diodes

    , JOURNAL OF APPLIED PHYSICS, Vol: 80, Pages: 4599-4603, ISSN: 0021-8979
  • Journal article
    Barnham K, Connolly J, Griffin P, Haarpaintner G, Nelson J, Tsui E, Zachariou A, Osborne J, Button C, Hill G, Hopkinson M, Pate M, Roberts J, Foxon Tet al., 1996,

    Voltage enhancement in quantum well solar cells

    , JOURNAL OF APPLIED PHYSICS, Vol: 80, Pages: 1201-1206, ISSN: 0021-8979
  • Journal article
    Barnes J, Nelson J, Barnham KWJ, Roberts JS, Pate MA, Grey R, Dosanjh SS, Mazzer M, Ghiraldo Fet al., 1996,

    Characterization of GaAs/InGaAs quantum wells using photocurrent spectroscopy

    , JOURNAL OF APPLIED PHYSICS, Vol: 79, Pages: 7775-7779, ISSN: 0021-8979
  • Conference paper
    Zacnariou A, Barnham KWJ, Griffin P, Nelson J, Button C, Hopkinson M, Pate M, Epler Jet al., 1996,

    A new approach to P-doping and the observation of efficiency enhancement in InP/InGaAs quantum well solar cells

    , New York, 25th ieee photovoltaic specialists conference MAY 13-17, 1996 WASHINGTON, DC, Publisher: I E E E, Pages: 113-116
  • Journal article
    GRUNBAUM E, NAPCHAN E, BARKAY Z, BARNHAM K, NELSON J, FOXON CT, ROBERTS JS, HOLT DBet al., 1995,

    EVALUATION OF THE MINORITY-CARRIER DIFFUSION LENGTH BY MEANS OF ELECTRON-BEAM-INDUCED CURRENT AND MONTE-CARLO SIMULATION IN ALGAAS AND GAAS P-I-N SOLAR-CELLS

    , SEMICONDUCTOR SCIENCE AND TECHNOLOGY, Vol: 10, Pages: 627-633, ISSN: 0268-1242
  • Journal article
    BARNHAM K, ALI T, BARNES J, CONNOLLY J, HAARPAINTNER G, NELSON J, OSBORNE J, TSUI E, ZACHARIOU A, BUTTON C, PATE M, ROBERTS J, FOXON Tet al., 1994,

    QUANTUM-WELL SOLAR-CELLS

    , OPTOELECTRONICS-DEVICES AND TECHNOLOGIES, Vol: 9, Pages: 483-498, ISSN: 0912-5434
  • Conference paper
    HAARPAINTNER G, BARNES J, BARNHAM KWJ, CONNOLLY JP, DOSANJH SS, NELSON J, ROBERTS C, BUTTON C, HILL G, PATE MA, ROBERTS JSet al., 1994,

    VOLTAGE PERFORMANCE OF QUANTUM-WELL SOLAR-CELLS IN THE ALXGA1+XAS/GAAS AND THE GAAS/INYGA1-YAS MATERIAL SYSTEMS

    , 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion/24th IEEE Photovoltaic Specialists Conference-1994, Publisher: IEEE, Pages: 1783-1786, ISSN: 0160-8371
  • Journal article
    BARNHAM K, BARNES J, HAARPAINTNER G, NELSON J, PAXMAN M, FOXON T, ROBERTS Jet al., 1993,

    QUANTUM-WELL SOLAR-CELLS

    , MRS BULLETIN, Vol: 18, Pages: 51-55, ISSN: 0883-7694
  • Journal article
    PAXMAN M, NELSON J, BRAUN B, CONNOLLY J, BARNHAM KWJ, FOXON CT, ROBERTS JSet al., 1993,

    MODELING THE SPECTRAL RESPONSE OF THE QUANTUM-WELL SOLAR-CELL

    , JOURNAL OF APPLIED PHYSICS, Vol: 74, Pages: 614-621, ISSN: 0021-8979
  • Journal article
    NELSON J, PAXMAN M, BARNHAM KWJ, ROBERTS JS, BUTTON Cet al., 1993,

    STEADY-STATE CARRIER ESCAPE FROM SINGLE QUANTUM-WELLS

    , IEEE JOURNAL OF QUANTUM ELECTRONICS, Vol: 29, Pages: 1460-1468, ISSN: 0018-9197
  • Conference paper
    BARNHAM KWJ, NELSON J, PAXMAN M, MURRAY R, FOXON CTet al., 1992,

    A NEW APPLICATION FOR III-V QUANTUM-WELL SYSTEMS - EFFICIENCY ENHANCEMENT IN SOLAR-CELLS

    , 18TH INTERNATIONAL SYMP ON GALLIUM ARSENIDE AND RELATED COMPOUNDS, Publisher: IOP PUBLISHING LTD, Pages: 511-515
  • Journal article
    Barnham KWJ, Nelson J, Paxman M, Murray R, Foxon CTet al., 1992,

    A new application for iii-v quantum-well systems - efficiency enhancement in solar-cells

    , Gallium Arsenide and Related Compounds 1991, Vol: 120, Pages: 511-515
  • Journal article
    Barnham KWJ, Nelson J, Paxman M, Murray R, Foxon CTet al., 1992,

    A new application for iii-v quantum-well systems - efficiency enhancement in solar-cells

    , Gallium Arsenide and Related Compounds 1991, Vol: 120, Pages: 511-515
  • Journal article
    BARNHAM KWJ, BRAUN B, NELSON J, PAXMAN M, BUTTON C, ROBERTS JS, FOXON CTet al., 1991,

    SHORT-CIRCUIT CURRENT AND ENERGY EFFICIENCY ENHANCEMENT IN A LOW-DIMENSIONAL STRUCTURE PHOTOVOLTAIC DEVICE

    , APPLIED PHYSICS LETTERS, Vol: 59, Pages: 135-137, ISSN: 0003-6951
  • Journal article
    BARNHAM KWJ, HART D, NELSON J, STEVENS RAet al., 1988,

    BRITISH CIVIL PLUTONIUM - PRODUCTION AND FATE

    , NATURE, Vol: 333, Pages: 709-710, ISSN: 0028-0836
  • Journal article
    BARNHAM KWJ, HART D, NELSON J, STEVENS RAet al., 1986,

    BRITISH CIVIL PLUTONIUM

    , NATURE, Vol: 320, Pages: 9-9, ISSN: 0028-0836
  • Journal article
    BARNHAM KWJ, HART D, NELSON J, STEVENS RAet al., 1985,

    PRODUCTION AND DESTINATION OF BRITISH CIVIL PLUTONIUM

    , NATURE, Vol: 317, Pages: 213-217, ISSN: 0028-0836
  • Journal article
    Connolly JP, Barnham KWJ, Nelson J, Roberts C, Pate M, Roberts JSet al.,

    Short circuit current enhancement in GaAs/AlGaAs MQW solar cells

    The GaAs/AlGaAs quantum well solar cell (QWSC) shows promise as a novelapproach to higher efficiency solar cells but suffers from a poor short circuitcurrent Jsc. We report on efforts to reduce this problem with the use ofcompositional grading and back surface mirroring. We present experimentalquantum efficiency (QE) data on a range of compositionally graded QWSCs anddevices in which the back surface of the cell is coated with a mirror,increasing the optical thickness of the quantum well layer in the longwavelength range. The experimental QE spectra are reproduced by a model whichdeals with arbitrary compositional profiles and optical cavities formed in themirrored cells. The model is used to design an optimised QWSC, and projectedJsc values given. Applications including II-VI and tandem solar cells areconsidered.

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