发明授权
- 专利标题: Semiconductor device with perovskite capacitor
- 专利标题(中): 具有钙钛矿电容器的半导体器件
-
申请号: US10427962申请日: 2003-05-02
-
公开(公告)号: US06924519B2公开(公告)日: 2005-08-02
- 发明人: Hiroshi Itokawa , Koji Yamakawa , Keitaro Imai , Katsuaki Natori , Bum-ki Moon
- 申请人: Hiroshi Itokawa , Koji Yamakawa , Keitaro Imai , Katsuaki Natori , Bum-ki Moon
- 申请人地址: JP Tokyo DE Munich
- 专利权人: Kabushiki Kaisha Toshiba,Infineon Technologies, AG
- 当前专利权人: Kabushiki Kaisha Toshiba,Infineon Technologies, AG
- 当前专利权人地址: JP Tokyo DE Munich
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 主分类号: H01L21/02
- IPC分类号: H01L21/02 ; H01L29/76 ; H01L29/94 ; H01L31/062 ; H01L31/113 ; H01L31/119
摘要:
There is disclosed a semiconductor device comprising a semiconductor substrate, and a capacitor provided above the semiconductor substrate and comprising a bottom electrode, a top electrode, and a dielectric film provided between the bottom electrode and the top electrode, at least one of the bottom electrode and the top electrode comprising a conductive film selected from a noble metal film and a noble metal oxide film, a metal oxide film having a perovskite structure, provided between the dielectric film and the conductive film, represented by ABO3, and containing a first metal element as a B site element, and a metal film provided between the conductive film and the metal oxide film, and containing a second metal element which is a B site element of a metal oxide having a perovskite structure, a decrease of Gibbs free energy at a time when the second metal element forms an oxide being larger than that at a time when the first metal element forms an oxide.
公开/授权文献
- US20040217404A1 SEMICONDUCTOR DEVICE 公开/授权日:2004-11-04
信息查询
IPC分类: