Search Results - "Geens, W"

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    Cost-efficient thermophotovoltaic cells based on germanium substrates by van der Heide, J., Posthuma, N.E., Flamand, G., Geens, W., Poortmans, J.

    Published in Solar energy materials and solar cells (01-10-2009)
    “…This paper describes the realisation of cost-efficient thermophotovoltaic (TPV) cells based on germanium substrates. Because the majority of the photons…”
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    Journal Article
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    Surface passivation for germanium photovoltaic cells by Posthuma, N.E., Flamand, G., Geens, W., Poortmans, J.

    Published in Solar energy materials and solar cells (01-06-2005)
    “…Passivation of a germanium surface has proved to be challenging. Various materials have been examined for this purpose, like for example silicon nitride and…”
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    Journal Article
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    Extraction of bulk and contact components of the series resistance in organic bulk donor-acceptor-heterojunctions by Aernouts, T., Geens, W., Poortmans, J., Heremans, P., Borghs, S., Mertens, R.

    Published in Thin solid films (01-02-2002)
    “…Basic solar cell characteristics are examined in bulk donor-acceptor-heterojunction devices. Therefore, spin-coated organic blends of…”
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    Journal Article
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    Carrier lifetime dependence on doping, metal implants and excitation density in Ge and Si by Gaubas, E., Vanhellemont, J., Simoen, E., Romandic, I., Geens, W., Clauws, P.

    Published in Physica. B, Condensed matter (15-12-2007)
    “…Results are presented of a comparative study of the dependence of carrier recombination characteristics on excitation and dopant concentration in Si and Ge…”
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    Metal implants-dependent carrier recombination characteristics in Ge by Gaubas, E., Uleckas, A., Vanhellemont, J., Geens, W.

    “…The impact of metallic impurities on the carrier lifetime in Ge is studied by using microwave probed photo-conductivity relaxation and photo-conductivity…”
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    Journal Article Conference Proceeding
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    On the characterisation of grown-in defects in Czochralski-grown Si and Ge by Vanhellemont, J., Van Steenbergen, J., Holsteyns, F., Roussel, P., Meuris, M., Młynarczyk, K., Śpiewak, P., Geens, W., Romandic, I.

    “…High yield processing of advanced integrated devices poses stringent demands on substrate and active device layer quality. Wafers have to be free of…”
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    Journal Article Conference Proceeding
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    Field-effect mobilities in spin-cast and vacuum-deposited PPV-type pentamers by Geens, W., Tsamouras, D., Poortmans, J., Hadziioannou, G.

    Published in Synthetic metals (01-05-2001)
    “…Field-effect transistors (FET) have been fabricated to determine the hole mobility of spin-cast films of the five-ring PPV-type oligomer…”
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    Journal Article Conference Proceeding
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    Nanostructured organic pn junctions towards 3D photovoltaics by MARTENS, T, MUNTERS, T, DE SCHEPPER, L, MANCA, J. V, GORIS, L, D'HAEN, J, SCHOUTEDEN, K, D'OLIESLAEGER, M, LUTSEN, L, VANDERZANDE, D, GEENS, W, POORTMANS, J

    “…The working principle of so-called organic bulk heterojunction solar cells prepared with blends of poly(2-methoxy-5-(3',7'-dimethyl-octyloxy))-p-phenylene…”
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    Journal Article
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    Analysis and simulation of the IV-characteristics of PPV-oligomer based Schottky diodes by Aernouts, T., Geens, W., Poortmans, J., Nijs, J., Mertens, R.

    Published in Synthetic metals (01-05-2001)
    “…Spin-coated organic blends of the five-ring PPV-type oligomer 2,5-di-n-octyloxy-1,4-bis((4′,4″-bisstyryl)styrylbenzene) (Ooct-OPV5) and polystyrene (PS) have…”
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    Journal Article Conference Proceeding
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    Fullerene–oligophenyleneethynylene conjugates: relationships between charge-carrier mobility, photovoltaic characteristics and chemical structure by Nierengarten, J.-F., Gu, T., Aernouts, T., Geens, W., Poortmans, J., Hadziioannou, G., Tsamouras, D.

    “…The charge-mobility properties of thin films prepared from different fullerene--oligophenyleneethynylene conjugates are reported. A direct relationship between…”
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    Probing the subgap absorption of photovoltaic polymer blends by the constant photocurrent method by Willekens, J., Adriaenssens, G.J., Aernouts, T., Geens, W., Vanlaeke, P., Poortmans, J.

    Published in Thin solid films (22-03-2004)
    “…The constant photocurrent method was originally developed to determine the sub-bandgap absorption coefficient of hydrogenated amorphous silicon. We studied the…”
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    Printable anodes for flexible organic solar cell modules by Aernouts, Tom, Vanlaeke, Peter, Geens, Wim, Poortmans, Jef, Heremans, Paul, Borghs, Staf, Mertens, Robert, Andriessen, Ronn, Leenders, Luc

    Published in Thin solid films (22-03-2004)
    “…The performance of organic bulk donor/acceptor heterojunction solar cells with different transparent electrodes is compared. Up to now, expensive material like…”
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    Journal Article
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    Organic co-evaporated films of a PPV-pentamer and C 60: model systems for donor/acceptor polymer blends by Geens, W, Aernouts, T, Poortmans, J, Hadziioannou, G

    Published in Thin solid films (01-02-2002)
    “…Organic solar cells based on an active layer of a spincast polymer donor/acceptor blend have proven to be very efficient. We present similar photovoltaic…”
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