Y. Liu, T. Kamei, T. Matsukawa, K. Endo, S. O'Uchi, J. Tsukada, H. Yamauchi, Y. Ishikawa, T. Hayashida, K. Sakamoto, A. Ogura, M. Masahara
{"title":"Comparative study of tri-gate- and double-gate-type poly-Si fin-channel split-gate flash memories","authors":"Y. Liu, T. Kamei, T. Matsukawa, K. Endo, S. O'Uchi, J. Tsukada, H. Yamauchi, Y. Ishikawa, T. Hayashida, K. Sakamoto, A. Ogura, M. Masahara","doi":"10.1109/SNW.2012.6243318","DOIUrl":null,"url":null,"abstract":"The tri-gate (TG)- and double-gate (DG)-type poly-Si fin-channel split-gate flash memories with a thin n+-poly-Si floating-gate (FG) have successfully been fabricated, and their electrical characteristics including the variations of threshold voltage (Vt) and S-slope have been comparatively investigated. It was experimentally found that better short-channel effect (SCE) immunity, smaller Vt variations, and a higher program speed are obtained in the TG-type flash memories than in the DG-type memories. Moreover, it was also confirmed that over-erase is effectively suppressed by split-gate structure.","PeriodicalId":6402,"journal":{"name":"2012 IEEE Silicon Nanoelectronics Workshop (SNW)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2012-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2012 IEEE Silicon Nanoelectronics Workshop (SNW)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SNW.2012.6243318","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
The tri-gate (TG)- and double-gate (DG)-type poly-Si fin-channel split-gate flash memories with a thin n+-poly-Si floating-gate (FG) have successfully been fabricated, and their electrical characteristics including the variations of threshold voltage (Vt) and S-slope have been comparatively investigated. It was experimentally found that better short-channel effect (SCE) immunity, smaller Vt variations, and a higher program speed are obtained in the TG-type flash memories than in the DG-type memories. Moreover, it was also confirmed that over-erase is effectively suppressed by split-gate structure.