Eddy Simoen

Cor Claeys

The aim is to give an overview of the physics of extended defects in Germanium, i.e. dislocations (line defects), grain boundaries, stacking faults, twins and {311} defects (two-dimensional defects) and precipitates, bubbles, etc. The first part covers fundamentals, describing the crystallographic structure and other physical and electrical properties, mainly of dislocations. Since dislocations are essential for the plastic deformation of Germanium, methods for analysis and imaging of dislocations and to evaluate their structure are described. Attention is given to the electrical and optical properties, which are important for devices made in dislocated Ge. The second part treats the creation of extended defects during wafer and device processing. Issues are addressed such as defect formation during ion implantation, necessary to create junctions, which are an essential part in every device type. Extended defects are also created during the deposition of thin or thick epitaxial layers on other substrates, which are important for optoelectronic and photovoltaic applications. In brief, the book is intended to provide a fundamental understanding of the extended-defect formation during Ge materials and device processing, providing ways to distinguish harmful from less detrimental defects and should point out ways for defect engineering and control.

Fundamental and Technological Aspects

Extended Defects in Germanium

This book provides a unique review of various aspects of metallic contamination in Si and Ge-based semiconductors. It discusses all of the important metals including their origin during crystal and/or device manufacturing, their fundamental properties, their characterization techniques and their impact on electrical devices’ performance. Several control and possible gettering approaches are addressed. The book offers a valuable reference guide for all researchers and engineers studying advanced and state-of-the-art micro- and nano-electronic semiconductor devices and circuits. Adopting an interdisciplinary approach, it combines perspectives from e.g. material science, defect engineering, device processing, defect and device characterization, and device physics and engineering.

Origin, Characterization, Control, and Device Impact

Metal Impurities in Silicon- and Germanium-Based Technologies

Jun Luo

Henry Radamson

Chao Zhao

CMOS Past, Present and Future provides insight from the basics, to the state-of-the-art of CMOS processing and electrical characterization, including the integration of Group IV semiconductors-based photonics. The book goes into the pitfalls and opportunities associated with the use of hetero-epitaxy on silicon with strain engineering and the integration of photonics and high-mobility channels on a silicon platform. It begins with the basic definitions and equations, but extends to present technologies and challenges, creating a roadmap on the origins of the technology and its evolution to the present, along with a vision for future trends. The book examines the challenges and opportunities that materials beyond silicon provide, including a close look at high-k materials and metal gate, strain engineering, channel material and mobility, and contacts. The book's key approach is on characterizations, device processing and electrical measurements. Addresses challenges and opportunities for the use of CMOS Covers the latest methods of strain engineering, materials integration to increase mobility, nano-scaled transistor processing, and integration of CMOS with photonic components Provides a look at the evolution of CMOS technology, including the origins of the technology, current status and future possibilities

Eddy Simoen

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