David A Carlson

US Patent:

20090314332, Dec 24, 2009

Filed:

Jan 23, 2009

Appl. No.:

12/358894

Inventors:

Allen M. Barnett - Landenberg PA, US
David Emil Carlson - Williamsburg VA, US
William Alan Doolittle - Hampton GA, US
Christiana Beatrice Honsberg - Tempe AZ, US
Douglas Andrew Kirkpatrick - Great Falls VA, US

International Classification:

H01L 31/052

US Classification:

136246

Abstract:

This invention relates to a high efficiency solar cell with a novel architecture. In one embodiment, the solar cell is comprised of a high energy gap cell stack and a dichroic mirror. The high energy gap cell stack is exposed to solar light before there is any splitting of the solar light into spectral components. Each cell in the high energy gap cell stack absorbs the light with photons of energy greater than or equal to its energy gap, i.e., the blue-green to ultraviolet portion of the solar light. Each cell in the high energy gap cell stack is transparent to and transmits light with photons of energy less than its energy gap. Spectral splitting is then performed by means of the dichroic mirror on the remaining light, i.e., the light transmitted by the high energy gap cell stack.

US Patent:

20110061726, Mar 17, 2011

Filed:

Nov 17, 2010

Appl. No.:

12/948389

Inventors:

Allen M. Barnett - Landenberg PA, US
David Emil Carlson - Williamsburg VA, US
William Alan Doolittle - Hampton GA, US
Christiana Beatrice Honsberg - Tempe AZ, US
Douglas Andrew Kirkpatrick - Great Falls VA, US

International Classification:

H01L 31/06

US Classification:

136255

Abstract:

This invention relates to a high efficiency solar cell with a novel architecture. In one embodiment, the solar cell is comprised of a high energy gap cell stack and a dichroic mirror. The high energy gap cell stack is exposed to solar light before there is any splitting of the solar light into spectral components. Each cell in the high energy gap cell stack absorbs the light with photons of energy greater than or equal to its energy gap, i.e., the blue-green to ultraviolet portion of the solar light. Each cell in the high energy gap cell stack is transparent to and transmits light with photons of energy less than its energy gap. Spectral splitting is then performed by means of the dichroic mirror on the remaining light, i.e., the light transmitted by the high energy gap cell stack.

US Patent:

45840288, Apr 22, 1986

Filed:

Sep 24, 1984

Appl. No.:

6/653559

Inventors:

Jacques I. Pankove - Princeton NJ
David E. Carlson - Yardley PA

Assignee:

RCA Corporation - Princeton NJ

International Classification:

H09L 21265

US Classification:

148 15

Abstract:

A p-type impurity in a silicon semiconductor structure is at least partially neutralized by exposure to atomic hydrogen. The subject method provides an excellent means of modifying the profile of the impurity. Suitable impurities include boron, aluminum, gallium and indium.

US Patent:

39912272, Nov 9, 1976

Filed:

Jan 27, 1975

Appl. No.:

5/544568

Inventors:

David Emil Carlson - Yardley PA
Lawrence Alan Goodman - East Windsor NJ

Assignee:

RCA Corporation - New York NY

International Classification:

B05D 306

US Classification:

427 39

Abstract:

A D. C. glow discharge is applied to a heated glass substrate coated with a conductive layer in the form of a pattern in an evacuated chamber, to which chamber certain amounts of oxygen and a volatile tin composition have been added. A glass substrate is produced which is coated with a patterned, transparent, conductive coating of tin oxide, wherein the surface region of the glass has been depleted of alkali metal ions.

US Patent:

44531737, Jun 5, 1984

Filed:

Apr 27, 1982

Appl. No.:

6/372103

Inventors:

David E. Carlson - Yardley PA
Brown F. Williams - Princeton NJ

Assignee:

RCA Corporation - New York NY

International Classification:

H01L 4500
H01L 2714
H01L 3100
H01L 2904

US Classification:

357 30

Abstract:

A photocell comprises a p-i-n amorphous silicon structure having a wide bandgap layer adjacent to either the p-type or n-type layer. This structure reduces the absorption of light entering the photocell and the back-diffusion of minority carriers.

US Patent:

42171482, Aug 12, 1980

Filed:

Jun 18, 1979

Appl. No.:

6/049496

Inventors:

David E. Carlson - Yardley PA

Assignee:

RCA Corporation - New York NY

International Classification:

H01L 3106
B05D 306

US Classification:

136 89SJ

Abstract:

An amorphous silicon solar cell incorporates a region of intrinsic hydrogenated amorphous silicon fabricated by a glow discharge wherein said intrinsic region is compensated by P-type dopants in an amount sufficient to reduce the space charge density of said region under illumination to about zero.

US Patent:

46908307, Sep 1, 1987

Filed:

Feb 18, 1986

Appl. No.:

6/830072

Inventors:

Charles R. Dickson - Trenton NJ
David E. Carlson - Yardley PA

Assignee:

Solarex Corporation - Rockville MD

International Classification:

B05D 306

US Classification:

427 38

Abstract:

Compounds having the formula (MX. sub. 3). sub. n M'X. sub. 4-n wherein M and M' are different Group 4A atoms, at least one of M and M' is silicon, X is hydrogen, halogen or mixtures thereof, and n is an integer between 1 and 4, inclusive, can be activated by dehydrogenation or dehalogenation. These compounds are useful as deposition feedstock materials in the formation of hydrogenated amorphous silicon alloys useful in the fabrication of photovoltaic and other electronically active devices. Dopants having the formula (SiX. sub. 3). sub. m L X. sub. 3-m wherein L is a Group 5A atom selected from the group of phosphorus, arsenic, antimony and bismuth, X is hydrogen, halogen or mixtures thereof and m is an integer between 1 and 3, inclusive, can be activated by dehydrogenation or dehalogenation. These compounds are useful in the fabrication of negatively-doped hydrogenated amorphous silicon alloys useful in the fabrication of photovoltaic and other electronically active devices. Dopants having the formula YJX. sub.

US Patent:

D3245250, Mar 10, 1992

Filed:

Mar 29, 1989

Appl. No.:

7/330356

Inventors:

John A. Baker - Jenkintown PA
David Carlson - Alma IL
Richard S. Meyer - Salem IL
Edwin F. Sharpe - Salem IL

Assignee:

Radiac Abrasives, Inc. - Salem IL

US Classification:

D15126