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<專題討論>2018/11/29(四)14:10綜合大樓2樓48218教室演講 : Prof. Satoshi Hamaguchi(Center for Atomic and Molecular Technologies, Graduate School of Engineering, Osaka University, Osaka, Japan)

張貼者:2018年11月22日 下午6:08Dabby Lu
講題:Introduction to Plasma-based Atomic-Layer Processes for Modern Semiconductor Device Fabrication
摘要:As the sizes of semiconductor devices continue to diminish and are now approaching atomic scales, the downsizing of transistors following Moore’s law is bound to end in the near future. However, the continuing market demand for higher performance and lower energy consumption of large-scale integrated (LSI) circuits has driven invention of new device technologies such as three-dimensional (3D) device structures and devices based on non-silicon materials. Manufacturing of these non-conventional devices also poses new challenges for processing technologies. One of the latest processing technologies that are considered crucial in modern semiconductor technologies is Atomic-Layer Processes (ALPs), which typically refers to Atomic Layer Deposition (ALD) and Atomic Layer Etching (ALE). In these processes, deposition or etching processes take place layer by layer in atomic sclae. For example, in plasma-based ALE of SiO2 films, deposition of a few-angstrom deep fluorocarbon (FC) layer on a SiO2 film and a subsequent application of low-energy Ar+ ions to the fluorocarbon-deposited SiO2 film causes sub-mono-layer etching of the SiO2 surface. By repeating these steps, a layer-by-layer etching of SiO2 can be achieved selectively over other materials such as Si. Despite their low throughput, ALPs are now widely welcomed in industry as they typically allow highly uniform processes over a large area with atomic-scale accuracy. In this lecture, after a brief introduction of plasma processing in general, basics of ALPs will be discussed and latest research results for experimental and computational studies on ALE processes will be presented.
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Dabby Lu,
2018年11月22日 下午6:08
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