Fundamental Principles of Optical Lithography: The Science of Microfabrication

9780470018934

0470018933

Microlithography is the main technical driving force behind one of the most important phenomenon in the history of technology - microelectronics and the incredible shrinking transistor. These dramatic increases in electronic functionality per unit cost each year for early five decades, have transformed society. The gating piece of technology in this marvel of manufacturing progress has always been the process of lithography - the photochemical printing of circuit patterns onto semiconductor wafers. This text attempts a difficult task - to capture the fundamental principles of the incredibly fast-changing field of semiconductor microlithography in such a sway that these principles may be effectively applied to past, present and future microfabrication technology generations. Its focus is on the underlying scientific principles of optical lithography, rather than its practice. It will serve equally well as a university textbook (each chapter has an extensive set of problems) and as an industry resource. Much of the material contained in this book is, of course, a tutorial review of the published literature on lithography and related sciences, but a significant portion is new work, never before having been published. there is no other single book that covers the wide breadth of scientific disciplines needed in the practice of optical microlithography. The major topics covered within this text are optics (imaging and thin film interference effects), photoresist chemistry (chemical reactions, diffusion, and development phenomenon), lithography as a manufacturing process (process control, critical dimension control, and overlay), and resolution enhancement technologies.