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637 Matching Results
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Development of copper sulfide/cadmium sulfide thin film solar cells. First technical progress report, 13 July 1979 to 12 October 1979
Preparation of CdS films by evaporation from a single graphite source, as generally used by the Institute of Energy Conversion (IEC) group at the University of Delaware, has been implemented. Previously at Westinghouse, four evaporation sources were used to permit uniform coverage of large area substrates. The graphite source used in this period is somewhat smaller than the IEC design to permit accommodation to the heater geometry currently available. Initial efforts with the single source evaporation have been on characterizing the thickness profiles of the deposited films. This is needed to permit selection of conditions for obtaining films of about 30..mu..m thickness over the central 4 cm x 4 cm area of the substrate. Barrier processing according to the details of IEC method has been used on four-source CdS films. To date the best cells have only been about 1% efficient. Low short circuit current density values (approx. 5 mA/cm/sub 2/) have been the biggest problem. Annealing in 6% H/sub 2//Ar mixtures at 170/sup 0/C after electrode grid evaporation generally has resulted in reduced values of J/sub sc/. Plans for the next period include the use of single source films for cell processing and the use of small area diode …
Date:
February 14, 1980
Creator:
Szedon, J. R.; Shirland, F. A.; Stoll, J. A. & Dickey, H. C.
Object Type:
Report
System:
The UNT Digital Library
Polyacetylene, (CH)/sub x/, as an emerging material for solar cell applications. Technical progress report, October, November, December 1979
Initial studies of p-n heterojunctions formed between undoped trans-(CH)/sub x/ and n-CdS are reported. The junctions were characterized by measurements of current vs voltage (I-V), capacitance vs voltage (C-V), and photovoltaic response spectra. The results are analyzed in terms of the standard heterojunction equations. It is concluded that undoped as-grown films of trans-(CH)/sub x/ are p-type with a residual acceptor concentration of 2 x 10/sup 18/ cm/sup -3/, and that in spite of the complex fibril morphology the semiconductor properties can be inferred by treating (CH)/sub x/ as an effective homogeneous medium. Detailed studies of the photovoltaic response at energies below the energy gap for (CH)/sub x/ imply the existence of a well-defined deep trapping state in polyacetylene with an energy near the center of the gap.
Date:
February 14, 1980
Creator:
Heeger, A.J. & MacDiarmid, A.G.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0120.0285]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The U.S. Marshals Service is celebrating its bicentennial this year and a traveling exhibit, sponsored by the Marshals Service and the Smithsonian Institution Traveling Exhibition Service, will be on display April 8 to May 15 at the National Cowboy Hall of Fame in Oklahoma City."
Date:
February 14, 1989
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0138.0533]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Martha Coe reads a story to her daughter Merrick, 15 months, during the Valentine's Day party Tuesday afternoon in the Edwards' home."
Date:
February 14, 1984
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0153.0244]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Four-year-old Linh Dao takes advantage of the balmy weather this week by sailing through the air - more or less - above Oklahoma City's Memorial Park."
Date:
February 14, 1982
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0166.0164]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
February 14, 1986
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0171.0138]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Rita Holder, left, signs up Brenda Earl of Choctaw so she will be registered to vote."
Date:
February 14, 1980
Creator:
Tullous, Don
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0315B.0027]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Bill Banowsky, left, University of Oklahoma president, visits with Marty and Terry Johnson."
Date:
February 14, 1984
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0348.0270]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
February 14, 1981
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Repository post-sealing risk analysis using MACRO. [MACRO]
MACRO, a code to propagate probability distributions through a set of linked models, is currently under development at Lawrence Livermore Laboratory. An early version of this code, MACRO1, has been used to assess post-sealing dose to man for simple repository and site models based on actual site data.
Date:
February 14, 1980
Creator:
Kaufman, A. M.; Edwards, L. L. & O'Connell, W. J.
Object Type:
Article
System:
The UNT Digital Library
Interaction of the ATA beam with the TM/sub 030/ mode of the accelerating cells
The interaction of the electron beam in the Advanced Test Accelerator with an azimuthally symmetric mode of the accelerating cells is investigated theoretically. The interaction possibly could cause modulation of the beam current at the resonant frequency of the mode. Values of the shunt impedance and Q value of the mode were obtained from previous measurement and analysis. Lagranian hydrodynamics is employed and a WKB solution to the equation of motion is obtained. Results indicate that the interaction will not be a problem in the accelerator.
Date:
February 14, 1985
Creator:
Neil, V.K.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0348.0272]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
February 14, 1981
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0250.0050]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Pat and Linda Alexander, left, and Zee and Bob Harris enjoy the gourmet dinner at The Coach House."
Date:
February 14, 1988
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0264.0474]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Baptist Medical Center nurse Martha Hernandez presents a Heart Warmers Club certificate, and t-shirt to young Joel Archley, who appears unimpressed, and his mother Linda of Mustang."
Date:
February 14, 1986
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0326.0223]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Marsha Kennard, left; Cathy Phillips, center, and Patty Turner are amused."
Date:
February 14, 1980
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0348.0271]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
February 14, 1981
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0251.0619]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Mary Ann Harroz and Barbara Brou greet guests as they arrive for a Valentine party."
Date:
February 14, 1984
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0271.0429]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Calling coyotes to the gun is exciting sport in western Oklahoma"
Date:
February 14, 1986
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0250.1008]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Chairman of the art and props committee, Marilyn Harris, center; co-chairman D'Anne Oliphant, right, and Connie Duke find themselves knee deep in stage flats and acrylics."
Date:
February 14, 1981
Creator:
Lynn, Renee
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0271.0143]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Cecilia and Dr. Khader Hussein, left, and Gail and Bruce Daniels attend the cocktail party for South Community Hospital medical staff members."
Date:
February 14, 1988
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0249.0180]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Although not as popular as its pro football counterpart, Super Bean VI drew Eastern Oklahoma County residents together for good food and fun."
Date:
February 14, 1981
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0229.0346]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Officer Terry Gregg remembers well the time last May he spent talking to a juvenile suspected of shooting a girl."
Date:
February 14, 1980
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0348.0281]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Fredrick "Rick" Kupke, left, and Joe Hall, far right, talk to reporters."
Date:
February 14, 1981
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0349.0704]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Its boat testing time on Lake Murray in southcentral Oklahoma as temperatures rise."
Date:
February 14, 1984
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History