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Sailor, M. J.
Porous Silicon in Practice
Preparation, Characterization and Applications

1. Edition November 2011
89.90 Euro
2011. XII, 250 Pages, Softcover
90 Fig. (40 Colored Fig.)
- Practical Approach Book -
ISBN 978-3-527-31378-5 - Wiley-VCH, Weinheim




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Short description
Written by an outstanding expert in the field, this book introduces the electrochemical and synthetic methods, as well as characterization techniques and applications. It discusses the construction and considerations involved with etch cells, and describes all three types of porous silicon structures. Backed by a copious color photographs detailing the procedures, plus further literature pertinent to many application fields.

From the contents
Preface

FUNDAMENTALS OF POROUS SILICON PREPARATION
Introduction
Chemical Reactions Governing the Dissolution of Silicon
Experimental Set-up and Terminology for Electrochemical Etching of Porous Silicon
Electrochemical Reactions in the Silicon System
Density, Porosity, and Pore Size Definitions
Mechanisms of Electrochemical Dissolution and Pore Formation
Resume of the Properties of Crystalline Silicon
Choosing, Characterizing, and Preparing a Silicon Wafer

PREPARATION OF MICRO-, MESO-, AND MACRO-POROUS SILICON LAYERS
Etch Cell: Materials and Construction
Power Supply
Other Supplies
Safety Precautions and Handling of Waste
Preparing HF Electrolyte Solutions
Cleaning Wafers Prior to Etching
Preparation of Microporous Silicon from a p-Type Wafer
Preparation of Mesoporous Silicon from a p++-Type Wafer
Preparation of Macroporous, Luminescent Porous Silicon from an n-Type Wafer (Frontside Illumination)
Preparation of Macroporous, Luminescent Porous Silicon from an n-Type Wafer (Back Side Illumination)
Preparation of Porous Silicon by Stain Etching
Preparation of Silicon Nanowire Arrays by Metal-Assisted Etching

PREPARATION OF SPATIALLY MODULATED POROUS SILICON LAYERS
Time-Programmable Current Source
Pore Modulation in the z-Direction: Double Layer
Pore Modulation in the z-Direction: Rugate Filter
More Complicated Photonic Devices: Bragg Stacks, Microcavities, and Multi-Line Spectral Filters
Lateral Pore Gradients (in the x-y Plane)
Patterning in the x-y Plane Using Physical or Virtual Masks
Other Patterning Methods

FREESTANDING POROUS SILICON FILMS AND PARTICLES
Freestanding Films of Porous Silicon-"Lift-offs"
Micron-Scale Particles of Porous Silicon by Ultrasonication of Lift-off Films
Core-Shell (Si/SiO2) Nanoparticles of Luminescent Porous Silicon by Ultrasonication

CHARACTERIZATION OF POROUS SILICON
Gravimetric Determination of Porosity and Thickness
Electron Microscopy and Scanned Probe Imaging Methods
Optical Reflectance Measurements
Porosity, Pore Size, and Pore Size Distribution by Nitrogen Adsorption Analysis (BET, BJH, and BdB Methods)
Measurement of Steady-State Photoluminescence Spectra
Time-Resolved Photoluminescence Spectra
Infrared Spectroscopy of Porous Silicon

CHEMISTRY OF POROUS SILICON
Oxide-Forming Reactions of Porous Silicon
Biological Implications of the Aqueous Chemistry of Porous Silicon
Formation of Silicon-Carbon Bonds
Thermal Carbonization Reactions
Conjugation of Biomolecules to Modified Porous Silicon
Chemical Modification in Tandem with Etching
Metallization Reactions of Porous Silicon

APPENDIX A1. ETCH CELL ENGINEERING DIAGRAMS AND SCHEMATICS
Standard or Small Etch Cell-Complete
Standard Etch Cell Top Piece
Small Etch Cell Top Piece
Etch Cell Base (for Either Standard or Small Etch Cell)
Large Etch Cell-Complete
Large Etch Cell Top Piece
Large Etch Cell Base

APPENDIX A2. SAFETY PRECAUTIONS WHEN WORKING WITH HYDROFLUORIC ACID
Hydrofluoric Acid Hazards
First Aid Measures for HF Contact
Note to Physician
HF Antidote Gel

APPENDIX A3. GAS DOSING CELL ENGINEERING DIAGRAMS AND SCHEMATICS
Gas Dosing Cell Top Piece
Gas Dosing Cell Middle Piece
Gas Dosing Cell Bottom Piece

 





 

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