摘要:
The present invention provides a method of forming a high-k dielectric layer on a semiconductor wafer. A metal silicate dielectric layer is initially deposited on the wafer. A dopant having dissociable oxygen is introduced into the metal silicate on the wafer. According to one embodiment the metal silicate comprises a group IV metal and the dopant is an oxide of one of an alkaline metal and an alkaline earth metal. According to another embodiment the metal silicate comprises a group IV metal.
摘要:
A liquid form oxidizer may be utilized to form a high dielectric constant dielectric material from a metallic precursor for semiconductor applications. The use of a liquid rather than a gaseous oxidizer reduces the presence of an oxidation under layer under the metallic precursor. It may also, in some embodiments, result in a purer dielectric film.
摘要:
A fabrication process of a flash memory device includes microwave excitation of high-density plasma in a mixed gas of Kr and an oxidizing gas or a nitriding gas. The resultant atomic state oxygen O* or hydrogen nitride radicals NH* are used for nitridation or oxidation of a polysilicon electrode surface. It is also disclosed the method of forming an oxide film and a nitride film on a polysilicon film according to such a plasma processing.
摘要:
The present invention generally provides improved adhesion and oxidation resistance of carbon-containing layers without the need for an additional deposited layer. In one aspect, the invention treats an exposed surface of carbon-containing material, such as silicon carbide, with an inert gas plasma, such as a helium (He), argon (Ar), or other inert gas plasma, or an oxygen-containing plasma such as a nitrous oxide (N2O) plasma. Other carbon-containing materials can include organic polymeric materials, amorphous carbon, amorphous fluorocarbon, carbon containing oxides, and other carbon-containing materials. The plasma treatment is preferably performed in situ following the deposition of the layer to be treated. Preferably, the processing chamber in which in situ deposition and plasma treatment occurs is configured to deliver the same or similar precursors for the carbon-containing layer(s). However, the layer(s) can be deposited with different precursors. The invention also provides processing regimes that generate the treatment plasma and systems which use the treatment plasma. The carbon-containing material can be used in a variety of layers, such as barrier layers, etch stops, ARCs, passivation layers, and dielectric layers.
摘要:
A fabrication process of a flash memory device includes microwave excitation of high-density plasma in a mixed gas of Kr and an oxidizing gas or a nitriding gas. The resultant atomic state oxygen O* or hydrogen nitride radicals NH* are used for nitridation or oxidation of a polysilicon electrode surface. It is also disclosed the method of forming an oxide film and a nitride film on a polysilicon film according to such a plasma processing.
摘要:
A fabrication process of a flash memory device includes microwave excitation of high-density plasma in a mixed gas of Kr and an oxidizing gas or a nitriding gas. The resultant atomic state oxygen O* or hydrogen nitride radicals NH* are used for nitridation or oxidation of a polysilicon electrode surface. It is also disclosed the method of forming an oxide film and a nitride film on a polysilicon film according to such a plasma processing.
摘要:
An embodiment of the present invention is a method of forming an ultra-thin dielectric layer by providing a substrate having a semiconductor surface; forming an oxygen-containing layer on the semiconductor surface; exposing the oxygen-containing layer to a nitrogen-containing plasma to create a uniform nitrogen distribution throughout the oxygen-containing layer; and re-oxidizing and annealing the layer to stabilize the nitrogen distribution, heal plasma-induced damage, and reduce interfacial defect density. This annealing step is selected from a group of four re-oxidizing techniques: Consecutive annealing in a mixture of H2 and N2 (preferably less than 20% H2), and then a mixture of O2 and N2 (preferably less than 20% 02); annealing by a spike-like temperature rise (preferably less than 1 s at 1000 to 1150° C.) in nitrogen-comprising atmosphere (preferably N2/O2 or N2O/H2); annealing by rapid thermal heating in ammonia of reduced pressure (preferably at 600 to 1000° C. for 5 to 60 s); annealing in an oxidizer/hydrogen mixture (preferably N2O with 1% H2) for 5 to 60 s at 800 to 1050° C.
摘要翻译:本发明的一个实施例是通过提供具有半导体表面的衬底来形成超薄电介质层的方法; 在半导体表面上形成含氧层; 将含氧层暴露于含氮等离子体以在整个含氧层中产生均匀的氮分布; 并重新氧化和退火该层以稳定氮分布,治愈等离子体诱导的损伤并降低界面缺陷密度。该退火步骤选自一组四种再氧化技术: PTEXT>连续 在H 2和N 2(优选小于20%H 2)的混合物中进行退火,然后将O 2和N 2(优选小于20%的O 2)的混合物进行退火;通过尖峰状温度升高(优选小于20% (优选为N 2 / O 2或N 2 O / H 2);通过在减压下的氨中快速热加热(优选在600至1000℃下,对于 5至60秒);在800至1050℃下在氧化剂/氢气混合物(优选N 2 O与1%H 2)中退火5至60秒。 PTEXT>
摘要:
A fabrication process of a flash memory device includes microwave excitation of high-density plasma in a mixed gas of Kr and an oxidizing gas or a nitriding gas. The resultant atomic state oxygen O* or hydrogen nitride radicals NH* are used for nitridation or oxidation of a polysilicon electrode surface. It is also disclosed the method of forming an oxide film and a nitride film on a polysilicon film according to such a plasma processing.
摘要:
A fabrication process of a flash memory device includes microwave excitation of high-density plasma in a mixed gas of Kr and an oxidizing gas or a nitriding gas. The resultant atomic state oxygen O* or hydrogen nitride radicals NH* are used for nitridation or oxidation of a polysilicon electrode surface. It is also disclosed the method of forming an oxide film and a nitride film on a polysilicon film according to such a plasma processing.
摘要:
A low temperature ozone-enhanced oxidation process is presented whereby amorphous high dielectric constant film devices are subject to oxidation processes at temperatures whereby crystallization of the amorphous high dielectric constant film is avoided, thereby lowering leakage currents and reducing the required thickness to achieve an equivalent SiO2 thickness (EOT).