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Date added: 17.4.2015
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Due to the recent discovery of the room-temperature visible light emission from porous silicon (P-Si), a great interest on P-Si has arisen in the past two years. Crystalline (c-) Si the heart of integrated circuits, has an indirect band gap of 1.1MoreDue to the recent discovery of the room-temperature visible light emission from porous silicon (P-Si), a great interest on P-Si has arisen in the past two years. Crystalline (c-) Si the heart of integrated circuits, has an indirect band gap of 1.1 eV, which limited its application in optoelectronics. The visible light emitting P-Si may open a new field for the possible combination of Si integrated technology and optoelectronics. This book is a comprehensive review of recent research and development on porous silicon. Strong visible photoluminescence (PL) and electroluminescence (EL) from P-Si and other forms of silicon nanocrystallites (nc-Si) are reviewed. Several proposed mechanisms for the PL from porous silicon such as quantum confinement, amorphicity and molecular PL are studied. The following issues are covered: mechanisms for the visible light emission, physical structures, studies of the PL and EL, correlation of stricture and optical studies, surface physics and chemistry, relationships among various forms (P-Si, a-Si), devices applications, future development. Porous Silicon by Zhe Chuan Feng
