A method of forming a field effect transistor comprises the following steps. A gate dielectric layer and a semiconductor layer are formed over a substrate in sequence. A photoresist layer is formed over the semiconductor layer. A plasma treatment is performed to the semiconductor layer to form a doped region and an undoped region laterally adjoining the doped region of the semiconductor layer using a gas. A conductive layer is formed over the doped region of the semiconductor layer and the photoresist layer. The photoresist layer is lifted off.

The present disclosure relates to an oxide semiconductor memory device and a manufacturing method thereof, and more particularly, to an oxide semiconductor memory device forming an amorphous indium-gallium-zinc-oxide (hereinafter, referred to as a-IGZO) thin film and a manufacturing method thereof. The present disclosure is to solve a problem of oxide semiconductor forming an a-IGZO thin film having a negative threshold voltage and improve mobility characteristics.

A semiconductor device manufacturing method includes forming a tin-containing oxide film on a gallium-oxide-based compound; irradiating the tin-containing oxide film with ultraviolet laser light to dope the gallium-oxide-based compound with tin; and forming a metal electrode on the tin-containing oxide film irradiated with the ultraviolet laser light.

Disclosed is a semiconductor doping method, and the semiconductor doping method includes: forming a molybdenum disulfide (MoS.sub.2) layer on a substrate; sputtering and depositing an aluminum nitride (AlOxNy) thin film on a surface of the molybdenum disulfide (MoS.sub.2) layer; and injecting electrons into the molybdenum disulfide (MoS.sub.2) through the deposition of the aluminum nitride (AlOxNy) thin film.

Provided is a method for manufacturing a metal-oxide thin-film transistor (TFT). The method includes: forming, on a base substrate, an active layer including a metal oxide semiconductor, and a functional layer laminated on the active layer and containing a lanthanide element; and annealing the active layer and the functional layer, such that the lanthanide element in the functional layer is diffused into the active layer.

A method for manufacturing semiconductor device according to an embodiment includes: forming a first metal oxide layer containing aluminum as a main component above a substrate; forming an oxide semiconductor layer above the first metal oxide layer; forming a gate insulating layer above the oxide semiconductor layer; forming a second metal oxide layer containing aluminum as a main component above the gate insulating layer; performing a heat treatment in a state where the second metal oxide layer is formed above the gate insulating layer; removing the second metal oxide layer after the heat treatment; and forming a gate electrode above the gate insulating layer.

An intercalation doping apparatus including: a reactor chamber where single or multiple wafers or substrates (SoMWoSubs) are disposed within the reactor chamber, where SOMWoSubs have a diameter or a side distance from 25 mm to 450 mm; a heater, where the heater is configured to provide heat to the SOMWoSubs disposed within the reactor chamber, where the SoMWoSubs include a temperature from 25 C. to 500 C.; where pressure is applied to at least one surface of the SOMWoSubs disposed within the reactor chamber within a range of 2 bar to 500 bar; and a dopant application apparatus, where the dopant application apparatus includes at least valves and tubing which bring dopants from outside to within the reactor chamber and includes at least a dopant crucible disposed within the reactor chamber, where the dopants include material in solid, liquid, or gaseous phase, and where the dopants include intercalation doping agents.