An oxide-buffered BE-MANOS charge-trapping device and the role of Al 2O3

Sheng Chih Lai*, Hang Ting Lue, Chien Wei Liao, Yu Fong Huang, Ming Jui Yang, Yi Hsien Lue, Tai Bor Wu, Jung Yu Hsieh, Szu Yu Wang, Shih Ping Hong, Fang Hao Hsu, Chih Yen Shen, Guang Li Luo, Chao-Hsin Chien, Kuang Yeu Hsieh, Rich Liu, Chih Yuan Lu

*Corresponding author for this work

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

    16 Scopus citations

    Abstract

    The role of Al2O3 in MANOS device is critically examined, and we conclude that its primary function is to reduce gate injection during erase operation. By itself, Al2O3 cannot stop charge leakage from the charge-trapping nitride layer. Furthermore, Al 2O3 provides no magic during the erase operation, and MANOS erases very slowly through charge de-trapping. BE-SONOS [1], with the band engineered ONO tunneling layers, provides efficient channel hole injection for erase. BE-MANOS [2] should be an ideal combination with fast erase and good reliability. However, it shows poor data retention. By inserting a SiO 2 buffer layer between Al2O3 and the SiN storage layer, the oxide-buffered BE-MANOS shows good performance and good reliability. The EOT scalability is also investigated.

    Original languageEnglish
    Title of host publication2008 Joint Non-Volatile Semiconductor Memory Workshop and International Conference on Memory Technology and Design, Proceedings, NVSMW/ICMTD
    Pages101-102
    Number of pages2
    DOIs
    StatePublished - 2008
    Event2008 Joint Non-Volatile Semiconductor Memory Workshop and International Conference on Memory Technology and Design, NVSMW/ICMTD - Opio, France
    Duration: 18 May 200822 May 2008

    Publication series

    Name2008 Joint Non-Volatile Semiconductor Memory Workshop and International Conference on Memory Technology and Design, Proceedings, NVSMW/ICMTD

    Conference

    Conference2008 Joint Non-Volatile Semiconductor Memory Workshop and International Conference on Memory Technology and Design, NVSMW/ICMTD
    Country/TerritoryFrance
    CityOpio
    Period18/05/0822/05/08

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