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Engineering diagrams for Teflon etch cell and attachments:
  • Teflon etch cell for preparing porous Si samples with 1.20 cm2 projected area
    Glass top for sealing the etch cell to perform anaerobic electrochemistry
    Clamp to hold glass tops in place

MOVIES (all are Apple Quicktime format)
Etch cell (3.1 Mb)
Animated clip showing cell used for etching porous Si.

Etch cell to make and modify porous Si (2.5 Mb)
Animated clip depicting the cell used for etching porous Si and the top that allows anaerobic electrochemical modification of the surface.

Etching porous Si (2.1 Mb)
A movie showing the preparation of a porous Si sample.

Detection of acetone with a porous Si photonic crystal (3.7 Mb)
A movie showing a porous Si Bragg stack being dosed (2x) with acetone in a vacuum chamber.


Equipment (in Sailor labs)
This equipment is available for use on a recharge basis; contact the group lab manager to schedule access and training:

Steady-state photoluminescence apparatus with cooled CCD detector (Princeton Instruments/Acton) covering the range 0.25-0.95 microns. Excitation sources include blue and UV diodes at 480 and 360 nm respectively

Fluorescence and Phosphorescence spectrometer with red-enhanced photomultiplier (Perkin-Elmer LS 50B) for acquisition of excitation and emission data to 950 nm

Fluorescence plate reader (Molecular Devices Gemini XPS) dual-monochromator microplate spectrofluorometer)

Absorbance plate reader (Molecular Devices Spectramax 340Pc384) Microplate Spectrophotometer

Dynamic Light Scattering/Zeta potential apparatus (Malvern Instruments Zetasizer Nano with Multi Purpose Titrator)

Fourier-Transform Infrared spectrometer with attenuated total reflectance (ATR) attachment (Nicolet 6700 with Smart-iTR). Liquid nitrogen-cooled MCT-A detector; spectral range 600-11,7000 wavenumbers. Diamond ATR crystal

Atomic Force Microscope/Scanning Tunneling Microscope (Digital Instruments Nanoscope III-a).

4-point conductivity probe and electronics for wafer resistivity characterization.

Electrochemical etching apparatus for preparing porous Si films. Labview (TM) computer interface allows fabrication of photonic crystals, Bragg stacks, microcavities, and Fabry-Perot layers.

Photoelectrochemical patterning tool for patterned etch of semiconductor wafers up to 6" diameter. Resolution of 50 microns.

Ocean Optics spectrometers, fiber optic attachments, microscope optics, and light sources for acquisition of optical reflectivity and Fabry-Perot interference data. Spectral wavelength range 400-1000 nm.

Available in the Inorganic Division

Available at the University:
High resolution Transmission Electron Microscope (TEM) 300 keV Philips CM30, with a Link X-ray energy dispersive detector, sample preparation lab and darkroom facilities.

Cambridge Electron Microprobe, Model 360 scanning electron microscopes with a Link X-ray energy dispersive detector and analyzer attachment.

Clean rooms with microlithography, annealing, and metal deposition systems

BET adsorption/surface area measurement apparatus.

Time-resolved photoluminescence apparatus including Quantel™ tripled YAG laser/Opotec™ Optical Parametric Oscillator laser for pulsed (5 ns) lifetime measurements, with wavelength range 0.450-0.7 microns. Detection with photomultiplier, preamps, and 500 MHz storage oscilloscope. Overall system response 20 ns

Facilities (in Sailor labs):
800 sq ft office/computer space
1500 sq ft wet lab space including chemical hoods, deionized water, inert gas handling equipment, conventional glove-box and Schlenk line apparatus for manipulation of air-sensitive compounds, explosion-proof freezer/refrigerator for chemical storage.
500 sq ft instrumentation lab space

Designed by Andrea Tao.
Main address: Department of Chemistry, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093-0358 (858) 534-0227
Send questions, comments, and suggestions to:

Last modified Monday, February 17, 2003