Characterization, integration and reliability of HfO2 and LaLuO3 high-κ/metal gate stacks for CMOS applications PDF Download

Author: Alexander Nichau
Publisher: Forschungszentrum Jülich
ISBN: 3893368981
Category :
Languages : en
Pages : 199

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Author: Irina Kärkkänen
Publisher: Forschungszentrum Jülich
ISBN: 3893369716
Category :
Languages : en
Pages : 151

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Author: Dieter Weber
Publisher: Forschungszentrum Jülich
ISBN: 3893369503
Category :
Languages : en
Pages : 141

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Ionic transport in nanostructures at high eld strength has recently gained attention, because novel types of computer memory with potentially superior properties rely on such phenomena. The applied voltages are only moderate, but they drop over the distance of a few nanometers and lead to extreme eld strengths in the MV/cm region. Such strong elds contributes signi cantly to the activation energy for ionic jump processes. This leads to an exponential increase of transport speed with voltage. Conventional high-temperature ionic conduction, in contrast, only relies on thermal activation for such jumps. In this thesis, the transport of minute amounts of oxygen through a thin dielectric layer sandwiched between two thin conducting oxide electrodes was detected semiquantitatively by measuring the conductance change of the electrodes after applying a current through the dielectric layer. The relative conductance change
G=G as a function of current I and duration t follows over several orders of magnitude a simple, empirical law of the form
G=G = CIAtB with t parameters C, A and B; A;B 2 [0; 1]. This empirical law can be linked to a predicted exponential increase of the transport speed with voltage at high eld strength. The behavior in the time domain can be explained with a spectrum of relaxation processes, similar to the relaxation of dielectrics. The in uence of temperature on the transport is strong, but still much lower than expected. This contradicts a commonly used law for high- eld ionic transport. The di erent oxide layers are epitaxial with thicknesses between 5 and 70 nm. First large-scale test samples were fabricated using shadow masks. The general behavior of such devices was studied extensively. In an attempt to achieve quantitative results with defect-free, miniaturized devices, a lithographic manufacturing process that uses repeated steps of epitaxial deposition and structuring of the layers was developed. It employs newly developed and optimized wet chemical etching processes for the conducting electrodes. First high-quality devices could be manufactured with this process and con rmed that such devices su er less from parasitic e ects. The lithographically structured samples were made from di erent materials. The results from the rst test samples and the lithographically structured samples are therefore not directly comparable. They do exhibit however in principle the same behavior. Further investigation of such lithographically structured samples appears promising

Author: Annemarie Köhl
Publisher: Forschungszentrum Jülich
ISBN: 3893369880
Category :
Languages : en
Pages : 181

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Author: Felix Gunkel
Publisher: Forschungszentrum Jülich
ISBN: 3893369023
Category :
Languages : en
Pages : 181

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Author: Freddy Yin Chiang Boey
Publisher: World Scientific
ISBN: 9814730718
Category : Technology & Engineering
Languages : en
Pages : 244

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50 Years of Materials Science in Singapore describes in vivid detail how a newly independent nation like Singapore developed world-class research capabilities in materials science that helped the country make rapid progress in energy, biomedical and electronics sectors. The economy mirrored this rapid trail of progress, utilizing home-grown technology and the contribution of materials science to the various sectors is undeniable in ensuring the economic growth and stability of Singapore.

Author: Cheol Seong Hwang
Publisher: Springer Science & Business Media
ISBN: 146148054X
Category : Science
Languages : en
Pages : 266

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Offering thorough coverage of atomic layer deposition (ALD), this book moves from basic chemistry of ALD and modeling of processes to examine ALD in memory, logic devices and machines. Reviews history, operating principles and ALD processes for each device.

Author: Eylem Durgun Özben
Publisher: Forschungszentrum Jülich
ISBN: 3893369414
Category :
Languages : en
Pages : 123

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Author: Samares Kar
Publisher: Springer Science & Business Media
ISBN: 3642365353
Category : Technology & Engineering
Languages : en
Pages : 515

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"The book comprehensively covers all the current and the emerging areas of the physics and the technology of high permittivity gate dielectric materials, including, topics such as MOSFET basics and characteristics, hafnium-based gate dielectric materials, Hf-based gate dielectric processing, metal gate electrodes, flat-band and threshold voltage tuning, channel mobility, high-k gate stack degradation and reliability, lanthanide-based high-k gate stack materials, ternary hafnia and lanthania based high-k gate stack films, crystalline high-k oxides, high mobility substrates, and parameter extraction. Each chapter begins with the basics necessary for understanding the topic, followed by a comprehensive review of the literature, and ultimately graduating to the current status of the technology and our scientific understanding and the future prospects." .

Author: Asim K. Ray
Publisher: John Wiley & Sons
ISBN: 1119529476
Category : Technology & Engineering
Languages : en
Pages : 628

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Book Description
Oxide Electronics Multiple disciplines converge in this insightful exploration of complex metal oxides and their functions and properties Oxide Electronics delivers a broad and comprehensive exploration of complex metal oxides designed to meet the multidisciplinary needs of electrical and electronic engineers, physicists, and material scientists. The distinguished author eschews complex mathematics whenever possible and focuses on the physical and functional properties of metal oxides in each chapter. Each of the sixteen chapters featured within the book begins with an abstract and an introduction to the topic, clear explanations are presented with graphical illustrations and relevant equations throughout the book. Numerous supporting references are included, and each chapter is self-contained, making them perfect for use both as a reference and as study material. Readers will learn how and why the field of oxide electronics is a key area of research and exploitation in materials science, electrical engineering, and semiconductor physics. The book encompasses every application area where the functional and electronic properties of various genres of oxides are exploited. Readers will also learn from topics like: Thorough discussions of High-k gate oxide for silicon heterostructure MOSFET devices and semiconductor-dielectric interfaces An exploration of printable high-mobility transparent amorphous oxide semiconductors Treatments of graphene oxide electronics, magnetic oxides, ferroelectric oxides, and materials for spin electronics Examinations of the calcium aluminate binary compound, perovoksites for photovoltaics, and oxide 2Degs Analyses of various applications for oxide electronics, including data storage, microprocessors, biomedical devices, LCDs, photovoltaic cells, TFTs, and sensors Suitable for researchers in semiconductor technology or working in materials science, electrical engineering, and physics, Oxide Electronics will also earn a place in the libraries of private industry researchers like device engineers working on electronic applications of oxide electronics. Engineers working on photovoltaics, sensors, or consumer electronics will also benefit from this book.