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公开(公告)号:US20150123171A1
公开(公告)日:2015-05-07
申请号:US14597128
申请日:2015-01-14
申请人: MARKO RADOSAVLJEVIC , PRASHANT MAJHI , JACK T. KAVALIEROS , NITI GOEL , WILMAN TSAI , NILOY MUKHERJEE , YONG JU LEE , GILBERT DEWEY , WILLY RACHMADY
发明人: MARKO RADOSAVLJEVIC , PRASHANT MAJHI , JACK T. KAVALIEROS , NITI GOEL , WILMAN TSAI , NILOY MUKHERJEE , YONG JU LEE , GILBERT DEWEY , WILLY RACHMADY
IPC分类号: H01L29/778 , H01L29/20
CPC分类号: H01L29/7786 , H01L21/2256 , H01L29/20 , H01L29/42316 , H01L29/47 , H01L29/66431 , H01L29/66462 , H01L29/7787
摘要: Conductivity improvements in III-V semiconductor devices are described. A first improvement includes a barrier layer that is not coextensively planar with a channel layer. A second improvement includes an anneal of a metal/Si, Ge or SiliconGermanium/III-V stack to form a metal-Silicon, metal-Germanium or metal-SiliconGermanium layer over a Si and/or Germanium doped III-V layer. Then, removing the metal layer and forming a source/drain electrode on the metal-Silicon, metal-Germanium or metal-SiliconGermanium layer. A third improvement includes forming a layer of a Group IV and/or Group VI element over a III-V channel layer, and, annealing to dope the III-V channel layer with Group IV and/or Group VI species. A fourth improvement includes a passivation and/or dipole layer formed over an access region of a III-V device.
摘要翻译: 描述了III-V半导体器件的电导率改进。 第一改进包括与通道层不共同平面的阻挡层。 第二个改进包括金属/ Si,Ge或硅锗/ III-V堆叠的退火,以在Si和/或锗掺杂的III-V层上形成金属硅,金属锗或金属硅锗层。 然后,去除金属层并在金属硅,金属锗或金属硅锗层上形成源/漏电极。 第三个改进包括在III-V沟道层上形成IV族和/或VI族元素的层,以及退火以使IV族和/或VI族物质掺杂III-V通道层。 第四个改进包括在III-V器件的接近区域上形成的钝化层和/或偶极层。