How the relative permittivity of solar cell materials influences solar cell performance

Andrea Crovetto, Mathias K. Huss-Hansen, Ole Hansen

    Research output: Contribution to journalJournal articleResearchpeer-review

    796 Downloads (Pure)

    Abstract

    The relative permittivity of the materials constituting heterojunction solar cells is usually not considered as a design parameter when searching for novel combinations of heterojunction materials. In this work, we investigate the validity of such an approach. Specifically, we show the effect of the materials permittivity on the physics and performance of the solar cell by means of numerical simulation supported by analytical relations. We demonstrate that, depending on the specific solar cell configuration and materials properties, there are scenarios where the relative permittivity has a major influence on the achievable conversion efficiency, and scenarios where its influence can be safely ignored. In particular, we argue that high-permittivity materials should always be the preferred choice as heterojunction partners of the absorber layer when prototyping new materials combinations. When the heterojunction partner has a high permittivity, solar cells are consistently more robust against several non-idealities that are especially likely to occur in early-stage development, when the device is not yet optimized.
    Original languageEnglish
    JournalSolar Energy
    Volume149
    Pages (from-to)145-150
    Number of pages6
    ISSN0038-092X
    DOIs
    Publication statusPublished - 2017

    Keywords

    • CIGS
    • Device physics
    • Dielectric constant
    • Heterojunction solar cell
    • Permittivity

    Cite this

    Crovetto, Andrea ; Huss-Hansen, Mathias K. ; Hansen, Ole. / How the relative permittivity of solar cell materials influences solar cell performance. In: Solar Energy. 2017 ; Vol. 149. pp. 145-150.
    @article{fe34f53f499e43f3a8124be42a462017,
    title = "How the relative permittivity of solar cell materials influences solar cell performance",
    abstract = "The relative permittivity of the materials constituting heterojunction solar cells is usually not considered as a design parameter when searching for novel combinations of heterojunction materials. In this work, we investigate the validity of such an approach. Specifically, we show the effect of the materials permittivity on the physics and performance of the solar cell by means of numerical simulation supported by analytical relations. We demonstrate that, depending on the specific solar cell configuration and materials properties, there are scenarios where the relative permittivity has a major influence on the achievable conversion efficiency, and scenarios where its influence can be safely ignored. In particular, we argue that high-permittivity materials should always be the preferred choice as heterojunction partners of the absorber layer when prototyping new materials combinations. When the heterojunction partner has a high permittivity, solar cells are consistently more robust against several non-idealities that are especially likely to occur in early-stage development, when the device is not yet optimized.",
    keywords = "CIGS, Device physics, Dielectric constant, Heterojunction solar cell, Permittivity",
    author = "Andrea Crovetto and Huss-Hansen, {Mathias K.} and Ole Hansen",
    year = "2017",
    doi = "10.1016/j.solener.2017.04.018",
    language = "English",
    volume = "149",
    pages = "145--150",
    journal = "Solar Energy",
    issn = "0038-092X",
    publisher = "Elsevier",

    }

    How the relative permittivity of solar cell materials influences solar cell performance. / Crovetto, Andrea; Huss-Hansen, Mathias K.; Hansen, Ole.

    In: Solar Energy, Vol. 149, 2017, p. 145-150.

    Research output: Contribution to journalJournal articleResearchpeer-review

    TY - JOUR

    T1 - How the relative permittivity of solar cell materials influences solar cell performance

    AU - Crovetto, Andrea

    AU - Huss-Hansen, Mathias K.

    AU - Hansen, Ole

    PY - 2017

    Y1 - 2017

    N2 - The relative permittivity of the materials constituting heterojunction solar cells is usually not considered as a design parameter when searching for novel combinations of heterojunction materials. In this work, we investigate the validity of such an approach. Specifically, we show the effect of the materials permittivity on the physics and performance of the solar cell by means of numerical simulation supported by analytical relations. We demonstrate that, depending on the specific solar cell configuration and materials properties, there are scenarios where the relative permittivity has a major influence on the achievable conversion efficiency, and scenarios where its influence can be safely ignored. In particular, we argue that high-permittivity materials should always be the preferred choice as heterojunction partners of the absorber layer when prototyping new materials combinations. When the heterojunction partner has a high permittivity, solar cells are consistently more robust against several non-idealities that are especially likely to occur in early-stage development, when the device is not yet optimized.

    AB - The relative permittivity of the materials constituting heterojunction solar cells is usually not considered as a design parameter when searching for novel combinations of heterojunction materials. In this work, we investigate the validity of such an approach. Specifically, we show the effect of the materials permittivity on the physics and performance of the solar cell by means of numerical simulation supported by analytical relations. We demonstrate that, depending on the specific solar cell configuration and materials properties, there are scenarios where the relative permittivity has a major influence on the achievable conversion efficiency, and scenarios where its influence can be safely ignored. In particular, we argue that high-permittivity materials should always be the preferred choice as heterojunction partners of the absorber layer when prototyping new materials combinations. When the heterojunction partner has a high permittivity, solar cells are consistently more robust against several non-idealities that are especially likely to occur in early-stage development, when the device is not yet optimized.

    KW - CIGS

    KW - Device physics

    KW - Dielectric constant

    KW - Heterojunction solar cell

    KW - Permittivity

    U2 - 10.1016/j.solener.2017.04.018

    DO - 10.1016/j.solener.2017.04.018

    M3 - Journal article

    VL - 149

    SP - 145

    EP - 150

    JO - Solar Energy

    JF - Solar Energy

    SN - 0038-092X

    ER -