The Japan Solar Cell Patent

Note: You can Use an outside Grill to bake the Screen Printed layers. It is a good
idea to make small cells, 8" x 10" or what ever. It is easier to fit into the Grill,
We suggest Baking in side a large roasting pan and then put the roasting pan inside
the preheated grill and shut the lid. It is suggested that you try and make 3 prototype
cells first, Work out all the details, Test them, and then start on a large production of
Solar Cells. It will all get much easier once you have done it. It is also suggested that
you bake them out side. You don't want any fumes in the house, an outside grill is the
best and most readily available oven there is and propane is cheap. I hear you may be
able to make them without a Nitrogen atmosphere if not try special gas companies or
make some yourself, it is supposed to be nonflammable.
Screen Printing: You start with a small 14" x 14" wood frame 2x2". Then a plastic
or clothe screen is stretched over the frame tightly one side at a time, and then stapled
down on all 4 sides, we suggest buying a yellow 200 mesh screen from a screen
printing supplier, Then you put an image of what ever you want to print into the
screen by photo emulsion or by cutting a lacquer or water film with an exacto knife.
( see our Screen Printing Video ) Once you have your image you place the finished
screen onto a flat smooth table top, attach it to a 14" long 2" x 4" with 2 door hinges.
using wood screws, then you attach the 2" x 4" on to the table so it and the screen will
not move. the screen should only go up or down.
you then put your 8" x 10" glass under the screen, register it, then lay the screen
down over the glass and apply your ink and then with a small 12" rubber Squeegee,
You pull the ink over the image and it is pushed thru the screen mesh and thru the
image that you cut and smoothly is printed onto the glass.
SUPPLIERS;
Screen Printing Books and supplies; NDS 1-800-783-3883 Indianapolis, IN.
( See also Art Store's, Hobby Shop's, Arts and Crafts, Screen printing company's.)
They also sell copper sheeting.
Solar Cell Screen Print Chemicals: Search the web, simply type in the chemical
you are looking for and many suppliers will pop up. Example: Cadmium Sulphide
Supplier..... We have checked and you can find all the chemicals and info on them
free on the web.
Also see: www.stanfordmaterials.com/semi.html
The Stanford Materials Company
1. Cadmium Sulphide in powder form = Cds (or if already thick liquid or ink OK.)
2. Cadmium Chloride + Cdcl 2 ( Powder or liquid form )
3. Propylene glycol + pg in liquid form
4. Carbon Powder, if you can not find none make your own wood carbon powder?
5. Cadmium = Cd
6. Tellurium = Te