Charge trapping and storage in SiNx thin films deposited with Oxford PlasmaLab 100 system

Yongling Ren*, Klaus Weber, Fouad Karouta, Kaushal Vora, Wensheng Liang

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    2 Citations (Scopus)

    Abstract

    Negative charges in silicon nitride films are beneficial for surface passivation of rear side of p type solar cells.[1] Previous studies indicates that N-rich SiNx films in an oxide-nitride-oxide structure display good charge trapping and storage ability. In this work, an Oxford PlasmaLab 100 PECVD system is used to vary the deposition conditions (temperature and RF power). SiNx films deposited at 400°C and RF=60W show an initial negative charge density of 1.2×1013/cm2 after negative charge injection. Modeling results suggest that tunnel oxide may not be necessary for achieving good charge stability, which will make the application more flexible.

    Original languageEnglish
    Title of host publicationProgram - 38th IEEE Photovoltaic Specialists Conference, PVSC 2012
    Pages1094-1097
    Number of pages4
    DOIs
    Publication statusPublished - 2012
    Event38th IEEE Photovoltaic Specialists Conference, PVSC 2012 - Austin, TX, United States
    Duration: 3 Jun 20128 Jun 2012

    Publication series

    NameConference Record of the IEEE Photovoltaic Specialists Conference
    ISSN (Print)0160-8371

    Conference

    Conference38th IEEE Photovoltaic Specialists Conference, PVSC 2012
    Country/TerritoryUnited States
    CityAustin, TX
    Period3/06/128/06/12

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