发明名称 |
Ambipolar synaptic devices |
摘要 |
Device architectures based on trapping and de-trapping holes or electrons and/or recombination of both types of carriers are obtained by carrier trapping either in near-interface deep ambipolar states or in quantum wells/dots, either serving as ambipolar traps in semiconductor layers or in gate dielectric/barrier layers. In either case, the potential barrier for trapping is small and retention is provided by carrier confinement in the deep trap states and/or quantum wells/dots. The device architectures are usable as three terminal or two terminal devices. |
申请公布号 |
US9318572(B2) |
申请公布日期 |
2016.04.19 |
申请号 |
US201514846750 |
申请日期 |
2015.09.05 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
Afzali-Ardakani Ali;Chen Tze-Chiang;Gopalakrishnan Kailash;Hekmatshoartabari Bahman |
分类号 |
H01L21/20;H01L29/66;H01L29/06;H01L29/10;H01L29/12;H01L21/8238 |
主分类号 |
H01L21/20 |
代理机构 |
Otterstedt, Ellenbogen & Kammer, LLP |
代理人 |
Percello Louis J.;Otterstedt, Ellenbogen & Kammer, LLP |
主权项 |
1. A method comprising:
obtaining a substrate including a semiconductor layer including n+/p+ regions and first and second electrically insulating layers, the semiconductor layer being between the first and second electrically insulating layers; removing a portion of the semiconductor layer, thereby forming a space between the first and second electrically insulating layers and adjoining a remaining portion of the semiconductor layer, the remaining portion of the semiconductor layer being functional as a first source/drain structure; growing a channel layer adjoining the remaining portion of the semiconductor layer and containing quantum structures in the space such that the quantum structures are functional as ambipolar traps, and forming a second source/drain structure including p+ and n+ regions adjoining the channel layer and configured to inject both electrons and holes into the channel layer. |
地址 |
Armonk NY US |