Search Results - "Bushnell, D.B."

Short-circuit current enhancement in Bragg stack multi-quantum-well solar cells for multi-junction space cell applications by Bushnell, D.B., Ekins-Daukes, N.J., Barnham, K.W.J., Connolly, J.P., Roberts, J.S., Hill, G., Airey, R., Mazzer, M.

“…GaInP/GaAs tandem cells are limited by the current generated in the bottom GaAs junction. Strain-balanced multi-quantum well (MQW) solar cells offer a way of…”
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Spectral response and I-V characteristics of large well number multi quantum well solar cells by Lynch, M C, Ballard, I M, Bushnell, D B, Connolly, J P, Johnson, D C, Tibbits, T N D, Barnham, K W J, Ekins-Daukes, N J, Roberts, J S, Hill, G, Airey, R, Mazzer, M

“…The inclusion of quantum wells in p-i-n solar cells leads to both an increase in photocurrent and a reduction in open circuit voltage. It has been shown that…”
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Strain-balanced quantum well solar cells by Ekins-Daukes, N.J, Bushnell, D.B, Connolly, J.P, Barnham, K.W.J, Mazzer, M, Roberts, J.S, Hill, G, Airey, R

“…The exceptional power conversion efficiency of monolithic multi-junction solar cells requires careful current matching in the individual junctions. It is shown…”
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Dark-current suppression due to photon recycling in distributed Bragg reflector strain-balanced quantum well solar cells by Johnson, D.C., Ballard, L.M., Barnham, K.W.J., Bessiere, A., Bushnell, D.B., Connolly, J.P., Roberts, J.S., Hill, G., Calder, C.

“…Self-absorption or photon recycling (PR) has been observed experimentally as a reduction in the ideality n=1 reverse saturation current of SB-QWSCs. We believe…”
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Strain Balanced Quantum Well Monolithic Tandem Solar Cells by Loannides, A., Tibbits, T.N.D., Connolly, J.P., Bushnell, D.B., Barnham, K.W.J., Calder, C., Hill, G., Roberts, J.S., Smekens, G.

“…The effect of incorporating strain balanced multi-quantum well structures in InGaP/GaAs monolithic tandem solar cells is investigated. At present the majority…”
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Strain-balanced materials for high-efficiency solar cells by Ekins-Daukes, N.J., Zhang, J., Bushnell, D.B., Barnham, K.W.J., Mazzer, M., Roberts, J.S.

“…Traditionally, monolithic multi-junction solar cells have required lattice matched material combinations for efficient operation. However, strain-balanced…”
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The use of III-V quantum heterostructures in PV: thermodynamic issues by Mazzer, M., Barnham, K.W.J., Ekins-Daukes, N., Bushnell, D.B., Connolly, J.

“…Can the efficiency enhancement in (single photon) III-V multi-quantum well photovoltaic cells be explained without violating the second law of thermodynamics?…”
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The potential for strain-balanced quantum well solar cells in terrestrial concentrator applications by Tibbits, T.N.D., Ballard, I.M., Barnham, K.W.J., Bushnell, D.B., Ekins-Daukes, N.J., Airey, R., Hill, G., Roberts, J.S.

“…Presently, monolithic tandem cells based on the Ga/sub 0.5/InP/GaAs material system are current limited by the lower GaAs junction. The effect of incorporating…”
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Effect of barrier composition and well number on the dark current of quantum well solar cells by Bushnell, D.B., Barnham, K.W.J., Connolly, J.P., Mazzer, M., Ekins-Daukes, N.J., Roberts, J.S., Hill, G., Airey, R., Nasi, L.

“…The effect of raising the barrier band-gap and the number of wells on the dark current of MOVPE-grown GaAs/sub 1-x/P/sub x//In/sub y/Ga/sub 1-y/As…”
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Recent results on quantum well solar cells by Barnham, K.W.J., Abbott, P., Ballard, I., Bushnell, D.B., Connolly, J.P., Ekins-Daukes, N.J., Mazzer, M., Nelson, J., Rohr, C., Tibbits, T.N.D., Airey, R., Hill, G., Roberts, J.S.

“…This review starts with the modelling of dark-currents in lattice-matched quantum well cells. We discuss an unexpected result obtained by extending studies of…”
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Light-trapping structures for multi-quantum well solar cells by Bushnell, D.B., Bamham, K.W.J., Connolly, J.P., Ekins-Daukes, N.J., Airey, R., Hill, G., Roberts, J.S.

“…Multi-quantum well (MQW) cells extend the absorption of bulk gallium arsenide cells to longer wavelengths, increasing short-circuit current and have been shown…”
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