New ways of developing glass/conducting glass/CdS/CdTe/metal thin-film solar cells based on a new model

DHARMADASA, I, SAMANTILLEKE, A. P., CHAURE, N. B. and YOUNG, J. (2002). New ways of developing glass/conducting glass/CdS/CdTe/metal thin-film solar cells based on a new model. Semiconductor Science and Technology, 17 (12), 1238-1248.

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    Making use of the authors' experimental results and the evidence available in the literature, an alternative model for glass/conducting glass/CdS/CdTe/metal solar cells has been formulated. This model explains the device behaviour in terms of a combination of a hetero-junction and a large Schottky barrier at the CdTe/metal interface. The main experimental observations available to date are described and compared with the currently assumed p-n junction model and this proposed new model. It is shown that the proposed model explains almost all the experimental results more satisfactorily. The paper describes the guidelines to further increase the performance efficiencies based on the new model. Following these new guidelines, the authors have fabricated improved devices producing open circuit voltage (V-oc) values over 600 mV, fill factor (FF) values over 0.60 and the short-circuit current density (J(sc)) values over 60 mA cm(-2) for best devices. Although the V-oc and FF could be further improved, the remarkable improvement of J(sc) indicates the possibility of further development of multilayer graded band gap tandem solar cells based on CdS/CdTe system.

    Item Type: Article
    Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Advanced Coatings and Composites Research Centre > Electronic Materials and Sensors Research Group
    Identification Number:
    Page Range: 1238-1248
    Depositing User: Ann Betterton
    Date Deposited: 08 Mar 2010 17:03
    Last Modified: 18 Mar 2021 09:30

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