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What's on the Surface? Physics and Chemistry of Delta-Doped SurfacesOutline of presentation: 1. Detector surfaces and the problem of stability 2. Delta-doped detectors 3. Physics of Delta-doped Silicon 4. Chemistry of the Si-SiO2 Interface 5. Physics and Chemistry of Delta-doped Surfaces a. Compensation b. Inversion c. Quantum exclusion. Conclusions: 1. Quantum confinement of electrons and holes dominates the behavior of delta-doped surfaces. 2. Stability of delta-doped detectors: Delta-layer creates an approx 1 eV tunnel barrier between bulk and surface. 3. At high surface charge densities, Tamm-Shockley states form at the surface. 4. Surface passivation by quantum exclusion: Near-surface delta-layer suppresses T-S trapping of minority carriers. 5. The Si-SiO2 interface compensates the surface 6. For delta-layers at intermediate depth, surface inversion layer forms 7. Density of Si-SiO2 interface charge can be extremely high (>10(exp 14)/sq cm)
Document ID
20120015946
Acquisition Source
Jet Propulsion Laboratory
Document Type
Presentation
External Source(s)
Authors
Hoenk, Michael
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 26, 2013
Publication Date
August 29, 2011
Subject Category
Inorganic, Organic And Physical Chemistry
Meeting Information
Meeting: Next Generation UV Instrument Technologies Enabling Mission in Astrophysics, Cosmology, and Planetary Sciences
Location: Pasadena, CA
Country: United States
Start Date: August 29, 2011
Distribution Limits
Public
Copyright
Other
Keywords
detectors
surface chemistry
delta-doping
back illumination
Molecular Beam Epitaxy
ultraviolet
surface passivation

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