A comprehensive review, including some recent results, of the structur
es, properties and fabrication methods of inorganic and organic silico
n-based materials with backbone dimensions from 0 to 3 is presented. Q
uantum effects in low-dimensional silicon structures are discussed usi
ng organosilicon materials, such as polyhedral compounds and oligosila
nes (quantum dots), polysilanes (quantum wires), heterocopolymers (one
-dimensional superlattices), and polysilynes (quantum planes). The lum
inous properties of silicon-based materials are also summarized.