Abstract:
A method for manufacturing a dummy gate in a gate-last process and a dummy gate in a gate-last process are provided. The method includes: providing a semiconductor substrate; growing a gate oxide layer on the semiconductor substrate; depositing bottom-layer amorphous silicon on the gate oxide layer; depositing an ONO structured hard mask on the bottom-layer amorphous silicon; depositing top-layer amorphous silicon on the ONO structured hard mask; depositing a hard mask layer on the top-layer amorphous silicon; forming photoresist lines on the hard mask layer, and trimming the formed photoresist lines so that the trimmed photoresist lines a width less than or equal to 22 nm; and etching the hard mask layer, the top-layer amorphous silicon, the ONO structured hard mask and the bottom-layer amorphous silicon in accordance with the trimmed photoresist lines, and removing the photoresist lines, the hard mask layer and the top-layer amorphous silicon.
Abstract:
A method for manufacturing a dummy gate in a gate-last process is provided. The method includes: providing a semiconductor substrate; growing a gate oxide layer on the semiconductor substrate; depositing bottom-layer amorphous silicon on the gate oxide layer; depositing an ONO structured hard mask on the bottom-layer amorphous silicon; depositing top-layer amorphous silicon on the ONO structured hard mask; depositing a hard mask layer on the top-layer amorphous silicon; forming photoresist lines having a width ranging from 32 nm to 45 nm on the hard mask layer; and etching the hard mask layer, the top-layer amorphous silicon, the ONO structured hard mask and the bottom-layer amorphous silicon in accordance with the photoresist lines, and removing the photoresist lines, the hard mask layer and the top-layer α-Si. Correspondingly, a dummy gate in a gate-last process is also provided.
Abstract:
The present invention discloses a method for manufacturing a semiconductor device, comprising: forming an insulating isolation layer on a substrate; forming an insulating isolation layer trench in the insulating isolation layer; forming an active region layer in the insulating isolation layer trench; forming a semiconductor device structure in and above the active region layer; characterized in that the carrier mobility of the active region layer is higher than that of the substrate. Said active region is formed of a material different from that of the substrate, the carrier mobility in the channel region is enhanced, thereby the device response speed is improved and the device performance is enhanced. Unlike the existing STI manufacturing process, for the present invention, an STI is formed first, and then filling is performed to form an active region, thus avoiding the problem of generation of holes in STI, and improving the device reliability.
Abstract:
The present invention discloses a heating method for maintaining a stable thermal budget. By following the primary procedure with a virtual procedure in such a manner that the total duration of the whole heating process remains constant, it is beneficial to maintain a stable thermal budget and further to maintain a stable device performance.
Abstract:
The present invention provides a method and a system for cleaning furnace, including the steps of introducing a nitrogen gas flow into a cleaning agent tank to carry the cleaning agent, introducing the nitrogen gas carrying the cleaning agent into the furnace via a pipeline to clean the furnace; and generating a steam by mixing and igniting a hydrogen gas flow and an oxygen gas flow, and then introducing the steam into the furnace to clean the furnace. The method for cleaning furnace according to the invention can effectively remove metal and non-metal impurities deposits in a furnace of semiconductor oxidation furnace equipment.
Abstract:
The present invention discloses a semiconductor device, comprising: a substrate, an insulating isolation layer formed on the substrate, a first active region layer and a second active region layer formed in the insulating isolation layer, characterized in that the carrier mobility of the first active region layer and/or second active region layer is higher than that of the substrate. In accordance with the semiconductor device and the manufacturing method thereof in the present invention, an active region formed of a material different from that of the substrate is used, the carrier mobility in the channel region is enhanced, thereby the device response speed is substantially improved and the device performance is enhanced greatly. Furthermore, unlike the existing STI manufacturing process, for the present invention, an STI is formed first, and then filling is performed to form an active region, thus avoiding the problem of generation of holes in STI, and improving the device reliability.
Abstract:
A method for manufacturing a dummy gate in a gate-last process and a dummy gate in a gate-last process are provided. The method includes: providing a semiconductor substrate; growing a gate oxide layer on the semiconductor substrate; depositing bottom-layer amorphous silicon on the gate oxide layer; depositing an ONO structured hard mask on the bottom-layer amorphous silicon; depositing top-layer amorphous silicon on the ONO structured hard mask; depositing a hard mask layer on the top-layer amorphous silicon; forming photoresist lines on the hard mask layer, and trimming the formed photoresist lines so that the trimmed photoresist lines a width less than or equal to 22 nm; and etching the hard mask layer, the top-layer amorphous silicon, the ONO structured hard mask and the bottom-layer amorphous silicon in accordance with the trimmed photoresist lines, and removing the photoresist lines, the hard mask layer and the top-layer amorphous silicon.
Abstract:
The present invention discloses a semiconductor device and method of manufacturing the same, comprising: forming an insulating isolation layer on a substrate; forming an insulating isolation layer trench in the insulating isolation layer; forming an active region layer in the insulating isolation layer trench; and forming a semiconductor device structure in and above the active region layer, wherein the carrier mobility of the active region layer is higher than that of the substrate. In accordance with the semiconductor device and the manufacturing method thereof in the present invention, an active region formed of a material different from that of the substrate is used, the carrier mobility in the channel region is enhanced, thereby the device response speed is substantially improved and the device performance is enhanced greatly. Furthermore, unlike the existing STI manufacturing process, in the present invention a STI is formed first, and then filling is performed to form an active region, to avoid the problem of generation of holes in the STI and improve the device reliability.
Abstract:
A semiconductor fabrication method is provided, in which a protective layer is deposited on the dummy wafer such that the protective layer fully encases the dummy wafer. Therefore, the dummy wafer will not be oxidized during thermal oxidation, thereby reducing dummy wafer consumption, decreasing production cost, avoiding particulate matter produced due to oxidation of the dummy wafer, and preventing the wafer to be oxidized from contamination.
Abstract:
The present invention discloses a heating method for maintaining a stable thermal budget. By following the primary procedure with a virtual procedure in such a manner that the total duration of the whole heating process remains constant, it is beneficial to maintain a stable thermal budget and further to maintain a stable device performance.