摘要:
A HEMT includes a silicon substrate, an unintentionally doped gallium nitride (UID GaN) layer over the silicon substrate, a donor-supply layer over the UID GaN layer, a gate structure, a drain, and a source over the donor-supply layer, and a passivation material layer having one or more buried portions contacting or almost contacting the UID GaN layer. A carrier channel layer at the interface of the donor-supply layer and the UID GaN layer has patches of non-conduction in a drift region between the gate and the drain. A method for making the HEMT is also provided.
摘要:
A semiconductor structure includes a first III-V compound layer. A second III-V compound layer is disposed on the first III-V compound layer and is different from the first III-V compound layer in composition. A carrier channel is located between the first III-V compound layer and the second III-V compound layer. A source feature and a drain feature are disposed on the second III-V compound layer. A gate electrode is disposed over the second III-V compound layer between the source feature and the drain feature. A fluorine region is embedded in the second III-V compound layer under the gate electrode. A gate dielectric layer is disposed over the second III-V compound layer. The gate dielectric layer has a fluorine segment on the fluorine region and under at least a portion of the gate electrode.
摘要:
A semiconductor structure includes a first III-V compound layer. A second III-V compound layer is disposed on the first III-V compound layer and different from the first III-V compound layer in composition. A carrier channel is located between the first III-V compound layer and the second III-V compound layer. A source feature and a drain feature are disposed on the second III-V compound layer. A gate electrode is disposed over the second III-V compound layer between the source feature and the drain feature. Two slanted field plates are disposed on the two side walls of the combined opening of the opening in a protection layer and the opening in a dielectric cap layer disposed on the second III-V compound layer.
摘要:
A circuit structure includes a substrate, an unintentionally doped gallium nitride (UID GaN) layer over the substrate, a donor-supply layer over the UID GaN layer, a gate structure, a drain, and a source over the donor-supply layer. A number of islands are over the donor-supply layer between the gate structure and the drain. The gate structure disposed between the drain and the source. The gate structure is adjoins at least a portion of one of the islands and/or partially disposed over at least a portion of at least one of the islands.
摘要:
A semiconductor structure includes a first III-V compound layer. A second III-V compound layer is disposed on the first III-V compound layer and different from the first III-V compound layer in composition. A carrier channel is located between the first III-V compound layer and the second III-V compound layer. A source feature and a drain feature are disposed on the second III-V compound layer. A gate electrode is disposed over the second III-V compound layer between the source feature and the drain feature. A carrier channel depleting layer is disposed on the second III-V compound layer. The carrier channel depleting layer is deposited using plasma and a portion of the carrier channel depleting layer is under at least a portion of the gate electrode.
摘要:
A manufacture method of a multilevel phase-change memory and operating method thereof are provided. The method includes providing a substrate, forming a bottom electrode on the substrate, forming a first heating layer on top of the bottom electrode, forming a second heating layer on top of the first heating layer, forming a first phase-change layer and a second phase-change layer respectively on the first heating layer and the second heating layer, and forming a first top electrode and a second electrode respectively on the first phase-change layer and the second phase-change layer. Hence, the bottom electrode, the first heating layer and the first phase-change layer constitute an electrical current path, the bottom electrode, the first heating layer, the second heating layer and the second phase-change layer constitute another electrical current path, and the resistances of the two electrical current path are different, thereby increasing the memory density.