Patent US7184967B1 successfully refreshed from Google Patents.
Patent US3935031A successfully refreshed from Google Patents.
US3935031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photovoltaic cell with enhanced power output
Assignee: New England Institute Inc
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Filing: 1973-05-07
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Granted: 1976-01-27
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Expires: 1993-05-07
Abstract
Abstract The photovoltage and photocurrent, and therefore, the power output of photovoltaic cells (solar cells) are markedly enhanced by depositing, on an exposed semiconductor surface of a solar cell, a layer of any one of a very large number of prophyrinic compounds.
Inventors
- 👤 Alan D. Adler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:17
CPC Classifications
H; H10; H10F; H10F19/00; H10F19/80; H10F77/00; H10F77/30; H10F77/306; H10F77/311; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/549
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
39 words
An article of manufacture comprising a photovoltaic cell having a layer of at least one porphyrinic compound deposited on an exposed semiconductor surface thereof, said layer being at least as thick as a monomolecular layer of said porphyrinic compound.
Claim 2
Dependent Claim
39 words
An article of manufacture comprising a photovoltaic cell having a layer of at least one porphyrinic compound deposited on an exposed semiconductor surface thereof, said layer being at least as thick as a monomolecular layer of said porphyrinic compound.
Claim 3
Dependent Claim
15 words
An article as claimed in claim 1 wherein the photovoltaic cell is a selenium cell.
Claim 4
Dependent Claim
15 words
An article as claimed in claim 1 wherein the photovoltaic cell is a Cu/CuO cell.
Claim 5
Dependent Claim
15 words
An article as claimed in claim 1 wherein the photovoltaic cell is a silicon cell.
Claim 6
Dependent Claim
19 words
An article as claimed in claim 1 wherein the porphyrinic compound is a compound containing the porphin structure: ##SPC2##
Claim 7
Dependent Claim
55 words
An article as claimed in claim 1 wherein the porphyrinic compound is selected from the group consisting of tetraphenyl porphyrin, zinc octaethyl porphyrin, copper tetraphenyl porphyrin, zinc tetraphenyl porphyrin, magnesium tetraphenyl porphyrin, iron tetraphenyl porphyrin chloride, silver tetraphenyl porphyrin, tetra-n-propyl porphyrin, porphin, tintetraphenyl porphyrin dichloride, tetraphenylchlorin TPPH 2 .sup. +2 (TFA - ) 2 .
Claim 8
Dependent Claim
42 words
A method of producing the article of claim 1, comprising depositing on an exposed semiconductor surface of a photocell, a layer of at least one porphyrinic compound, said layer being at least as thick as a monomolecular layer of said porphyrinic compound.
Claim 9
Dependent Claim
20 words
A method as claimed in claim 7 wherein the thickness of the layer is from 0.003 up to one micron.
Claim 10
Dependent Claim
17 words
A method as claimed in claim 7 wherein the photocell is a selenium, silicon or Cu/CuO cell.
Claim 11
Dependent Claim
19 words
A method as claimed in claim 7 wherein the porphyrinic compound is a compound containing the porphin structure: ##SPC3##
Claim 12
Dependent Claim
55 words
A method as claimed in claim 7 wherein the porphyrinic compound is selected from the group consisting of tetraphenyl porphyrin, zinc octaethyl porphyrin, copper tetraphenyl porphyrin, zinc tetraphenyl porphyrin, magnesium tetraphenyl porphyrin, iron tetraphenyl porphyrin chloride, silver tetraphenyl porphyrin, tetra-n-propyl porphyrin, porphin, tintetraphenyl prophyrin dichloride, tetraphenylchlorin TPPH 2 .sup. +2 (TFA - ) 2 .
Claim 13
Dependent Claim
55 words
A method as claimed in claim 7 wherein the photocell is a silicon cell and the method further comprises treating the cell with an alcoholic KOH solution to convert silicon dioxide on the surface of said cell to silica gel and diffusing the porphyrinic compound through said silica gel and onto the silicon semiconductor surface.
Claim 14
Dependent Claim
19 words
An article as claimed in claim 1, wherein the thickness of the layer is from 0.003 to 1 micron.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |