Electronic and Optical Properties of Si and Ge Nanocrystals

Authored by: Tupei Chen

Semiconductor Nanocrystals and Metal Nanoparticles

Print publication date:  August  2016
Online publication date:  October  2016

Print ISBN: 9781439878309
eBook ISBN: 9781315374628
Adobe ISBN:


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Bulk crystalline silicon (Si) and germanium (Ge) are the two most important indirect bandgap semiconductors. Bulk Si crystal is the main material of today’s microelectronic/nanoelectronic, photovoltaic, and microelectromechanical system (MEMS) technologies. In particular, the ubiquitous “Si chip” is taken for granted in today’s society. Germanium is a semiconductor material that formed the basis for the development of transistor technology (the first solid-state transistor was made with Ge). But by the late 1950s, silicon had emerged as the favored semiconductor, and it has remained ever since because of the breakthrough of planar technology and integrated circuit (IC) technology. Nevertheless, Ge is an important material for optoelectronic devices such as photodetectors and solar cells, and in recent years there has been renewed interest in Ge, which has been triggered by its strong potential for deep submicrometer (sub-45 nm) IC technologies.

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