Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1978-03-24
1980-03-04
Tupman, W. C.
Metal working
Method of mechanical manufacture
Assembling or joining
427 74, B01J 1700
Patent
active
041909500
ABSTRACT:
A low-cost dye-sensitized Schottky barrier solar cell comprised of a substrate of semiconductor with an ohmic contact on one face, a sensitizing dye adsorbed onto the opposite face of the semiconductor, a transparent thin-film layer of a reducing agent over the dye, and a thin-film layer of metal over the reducing agent. The ohmic contact and metal layer constitute electrodes for connection to an external circuit and one or the other or both are made transparent to permit light to penetrate to the dye and be absorbed therein for generating electric current. The semiconductor material chosen to be the substrate is one having a wide bandgap and which therefore is transparent; the dye selected is one having a ground state within the bandgap of the semiconductor to generate carriers in the semiconductor, and a first excited state above the conduction band edge of the semiconductor to readily conduct electrons from the dye to the semiconductor; the reducing agent selected is one having a ground state above the ground state of the sensitizer to provide a plentiful source of electrons to the dye during current generation and thereby enhance the generation; and the metal for the thin-film layer of metal is selected to have a Fermi level in the vicinity of or above the ground state of the reducing agent to thereby amply supply electrons to the reducing agent.
REFERENCES:
patent: 3057947 (1962-10-01), Calvin
patent: 3453711 (1969-07-01), Miller
patent: 3975211 (1976-08-01), Shirland
patent: 4127738 (1978-11-01), Ghosh
Photochemistry and Photobiology, "Photochemical & Electrochemical Processes f Excited Dyes at Semiconductor & Metal Electrodes," by Memming, vol. 16, 1972, pp. 325-333.
Clouse, Jr. Clifton E.
Gaither Roger S.
Lupo R. V.
The United States of America as represented by the Department of
Tupman W. C.
LandOfFree
Dye-sensitized solar cells does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dye-sensitized solar cells, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dye-sensitized solar cells will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2033866