Intel Corporation

Li Huey Tan

Van H Le

Abhishek A Sharma

Tristan A Tronic

Jack T Kavalieros

Tahir Ghani

Gilbert W Dewey

Benjamin Chu-Kung

Shriram Shivaraman

Kevin Lai Lin

Sanaz Kabehie Gardner

Justin R Weber

Kent Millard

Ravi Pillarisetty

Miriam Ruth Reshotko

Embodiments herein describe techniques for a semiconductor device, which may include a substrate, and a U-shaped channel above the substrate. The U-shaped channel may include a channel bottom, a first channel wall and a second channel wall parallel to each other, a source area, and a drain area. A gate dielectric layer may be above the substrate and in contact with the channel bottom. A gate electrode may be above the substrate and in contact with the gate dielectric layer. A source electrode may be coupled to the source area, and a drain electrode may be coupled to the drain area. Other embodiments may be described and/or claimed.

Self-aligned contacts for thin film transistors

An integrated circuit includes: a gate dielectric; a first layer adjacent to the gate dielectric; a second layer adjacent to the first layer, the second layer comprising an amorphous material; a third layer adjacent to the second layer, the third layer comprising a crystalline material; and a source or drain at least partially adjacent to the third layer. In some cases, the crystalline material of the third layer is a first crystalline material, and the first layer comprises a second crystalline material, which may be the same as or different from the first crystalline material. In some cases, the gate dielectric includes a high-K dielectric material. In some cases, the gate dielectric, the first layer, the second layer, the third layer, and the source or drain are part of a back-gate transistor structure (e.g., back-gate TFT), which may be part of a memory structure (e.g., located within an interconnect structure).

Multi-layer crystalline back gated thin film transistor

Described is an apparatus which comprises: a gate comprising a metal; a first layer adjacent to the gate, the first layer comprising a dielectric material; a second layer adjacent to the first layer, the second layer comprising a second material; a third layer adjacent to the second layer, the third layer comprising a third material including an amorphous metal oxide; a fourth layer adjacent to the third layer, the fourth layer comprising a fourth material, wherein the fourth and second materials are different than the third material; a source partially adjacent to the fourth layer; and a drain partially adjacent to the fourth layer.

Techniques are disclosed for forming thin-film transistors (TFTs) with low contact resistance. As disclosed in the present application, the low contact resistance can be achieved by intentionally thinning one or both of the source/drain (S/D) regions of the thin-film layer of the TFT device. As the TFT layer may have an initial thickness in the range of 20-65 nm, the techniques for thinning the S/D regions of the TFT layer described herein may reduce the thickness in one or both of those S/D regions to a resulting thickness of 3-10 nm, for example. Intentionally thinning one or both of the S/D regions of the TFT layer induces more electrostatic charges inside the thinned S/D region, thereby increasing the effective dopant in that S/D region. The increase in effective dopant in the thinned S/D region helps lower the related contact resistance, thereby leading to enhanced overall device performance.

Thin-film transistors with low contact resistance

Embodiments herein describe techniques for a thin-film transistor (TFT), which may include a gate electrode above a substrate and a channel layer above the gate electrode. A source electrode may be above the channel layer and adjacent to a source area of the channel layer, and a drain electrode may be above the channel layer and adjacent to a drain area of the channel layer. A passivation layer may be above the channel layer and between the source electrode and the drain electrode, and a top dielectric layer may be above the gate electrode, the channel layer, the source electrode, the drain electrode, and the passivation layer. In addition, an air gap may be above the passivation layer and below the top dielectric layer, and between the source electrode and the drain electrode. Other embodiments may be described and/or claimed.

Air gap for thin film transistors

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Hillsboro, OR, United States of America

Li Huey Tan