Reduced Thermal Processing For Ulsi

As feature dimensions of integrated circuits shrink, the associated geometrical constraints on junction depth impose severe restrictions on the thermal budget for processing such devices. Furthermore, due to the relatively low melting point of the first aluminum metallization level, such restrictions extend to the fabrication of multilevel structures that are now essential in increasing packing density of interconnect lines. The fabrication of ultra large scale integrated (ULSI) devices under thermal budget restrictions requires the reassessment of existing and the development of new microelectronic materials and processes. This book addresses three broad but interrelated areas. The first area focuses on the subject of rapid thermal processing (RTP), a technology that allows minimization of processing time while relaxing the constraints on high temperature. Initially developed to limit dopant redistribution, current applications of RTP are shown here to encompass annealing, oxidation, nitridation, silicidation, glass reflow, and contact sintering. In a second but complementary area, advances in equipment design and performance of rapid thermal processing equipment are presented in conjunction with associated issues of temperature measurement and control. Defect mechanisms are assessed together with the resulting properties of rapidly deposited and processed films. The concept of RTP integration for a full CMOS device process is also examined together with its impact on device characteristics.

Rapid thermal and integrated processing is an emerging single-wafer technology in ULSI semiconductor manufacturing, electrical engineering, applied physics and materials science. Here, the physics and engineering of this technology are discussed at the graduate level. Three interrelated areas are covered. First, the thermophysics of photon-induced annealing of semiconductor and related materials, including fundamental pyrometry and emissivity issues, the modelling of reactor designs and processes, and their relation to temperature uniformity. Second, process integration, treating the advances in basic equipment design, scale-up, integrated cluster-tool equipment, including wafer cleaning and integrated processing. Third, the deposition and processing of thin epitaxial, dielectric and metal films, covering selective deposition and epitaxy, integrated processing of layer stacks, and new areas of potential application, such as the processing of III-V semiconductor structures and thin- film head processing for high-density magnetic data storage.

The proceedings from this May 2000 symposium illustrate the range of applications in Rapid Thermal Processing (RTP). The refereed papers cover a variety of issues, such as ultra-shallow junctions; contacts for nanoscale CMOS; gate stacks; new applications of RTP, such as for the enhanced crystalization of amorphous silicon thin films; and advances on RTP systems and process monitoring, including optimizing and controlling gas flows in an RTCVD reactor. Most presentations are supported by charts and other graphical data. c. Book News Inc.

Retaining the comprehensive and in-depth approach that cemented the bestselling first edition's place as a standard reference in the field, the Handbook of Semiconductor Manufacturing Technology, Second Edition features new and updated material that keeps it at the vanguard of today's most dynamic and rapidly growing field. Iconic experts Robert Doering and Yoshio Nishi have again assembled a team of the world's leading specialists in every area of semiconductor manufacturing to provide the most reliable, authoritative, and industry-leading information available. Stay Current with the Latest Technologies In addition to updates to nearly every existing chapter, this edition features five entirely new contributions on... Silicon-on-insulator (SOI) materials and devices Supercritical CO2 in semiconductor cleaning Low-κ dielectrics Atomic-layer deposition Damascene copper electroplating Effects of terrestrial radiation on integrated circuits (ICs) Reflecting rapid progress in many areas, several chapters were heavily revised and updated, and in some cases, rewritten to reflect rapid advances in such areas as interconnect technologies, gate dielectrics, photomask fabrication, IC packaging, and 300 mm wafer fabrication. While no book can be up-to-the-minute with the advances in the semiconductor field, the Handbook of Semiconductor Manufacturing Technology keeps the most important data, methods, tools, and techniques close at hand.

The formation of solids is governed by kinetic processes, which are closely related to the macroscopic behaviour of the resulting materials. With the main focus on ease of understanding, the author begins with the basic processes at the atomic level to illustrate their connections to material properties. Diffusion processes during crystal growth and phase transformations are examined in detail. Since the underlying mathematics are very complex, approximation methods typically used in practice are the prime choice of approach. Apart from metals and alloys, the book places special emphasis on the growth of thin films and bulk crystals, which are the two main pillars of modern device and semiconductor technology. All the presented phenomena are tied back to the basic thermodynamic properties of the materials and to the underlying physical processes for clarity.