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17.5% p-Type Silicon Heterojunction Solar Cells with HWCVD a-Si:H as the Emitter and Back Contact
Thin hydrogenated amorphous silicon (a-Si:H) layers deposited by hot-wire chemical vapor deposition (HWCVD) are used as both emitters and back contacts in silicon heterojunction solar cells. Low interface recombination velocity and high open-circuit voltage are achieved by a low substrate temperature (<150 deg C) intrinsic a-Si:H deposition which ensures immediate amorphous silicon deposition. This is followed by deposition of doped a-Si:H at a higher temperature (>200 deg C) which appears to improve dopant activation. With an i/n a-Si:H emitter, we obtain a confirmed efficiency of 17.1% on textured p-type float-zone (FZ) silicon with a screen-printed aluminum back-surface-field (Al-BSF) contact. Employing a-Si:H as both the front emitter and the back contact, we achieve a confirmed efficiency of 17.5%, the highest reported efficiency for a p-type c-Si based heterojunction solar cell.
Date:
November 1, 2005
Creator:
Wang, T. H.; Page, M. R.; Iwaniczko, E.; Wang, Q.; Xu,Y.; Yan, Y. et al.
Object Type:
Article
System:
The UNT Digital Library
A 20 - Red River Army Depot, TX, Community Presentation
Red River Army Depot, Texas, local community presentation of 21 June 05
Date:
November 8, 2005
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
100/300 Area Aquifer Tube Task: Annual Sampling for Fiscal Year 2006, Hanford Site, Washington
This letter report has been prepared to provide the U.S. Department of Energy, U.S. Environmental Protection Agency, Washington State Department of Ecology, and Hanford Site contractors with logistical information pertaining to the use of certain environmental monitoring sites. Although the distribution is not limited, It is not intended for general distribution beyond that audience.
Date:
November 1, 2005
Creator:
Peterson, Robert E.; Hartman, Mary J.; Raidl, Robert F. & Borghese, Jane V.
Object Type:
Report
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 35, No. 10, Ed. 1 Friday, November 4, 2005
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
November 4, 2005
Creator:
Waltman, Erin
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 35, No. 11, Ed. 1 Friday, November 11, 2005
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
November 11, 2005
Creator:
Waltman, Erin
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 35, No. 12, Ed. 1 Friday, November 18, 2005
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
November 18, 2005
Creator:
Waltman, Erin
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Workshop on Crystalline Silicon Solar Cells and Modules: Materials and Processes; Extended Abstracts and Papers
The National Center for Photovoltaics sponsored the 15th Workshop on Crystalline Silicon Solar Cells & Modules: Materials and Processes, held in Vail, CO, August 7-10, 2005. This meeting provided a forum for an informal exchange of technical and scientific information between international researchers in the photovoltaic and relevant non-photovoltaic fields. The workshop addressed the fundamental properties of PV silicon, new solar cell designs, and advanced solar cell processing techniques. A combination of oral presentations by invited speakers, poster sessions, and discussion sessions reviewed recent advances in crystal growth, new cell designs, new processes and process characterization techniques, and cell fabrication approaches suitable for future manufacturing demands. The theme of this year's meeting was 'Providing the Scientific Basis for Industrial Success.' Specific sessions during the workshop included: Advances in crystal growth and material issues; Impurities and defects in Si; Advanced processing; High-efficiency Si solar cells; Thin Si solar cells; and Cell design for efficiency and reliability module operation. The topic for the Rump Session was ''Si Feedstock: The Show Stopper'' and featured a panel discussion by representatives from various PV companies.
Date:
November 1, 2005
Creator:
Sopori, B. L.
Object Type:
Article
System:
The UNT Digital Library
2004 Physics and Advanced Technologies In the News
Several outstanding research activities in the Physics and Advanced Technology Directorate in 2004 were featured in ''Science & Technology Review'', the monthly publication of the Lawrence Livermore National Laboratory. Reprints of those articles accompany this report. Here we summarize other science and technology highlights, as well as the awards and recognition received by members of the Directorate in 2004.
Date:
November 1, 2005
Creator:
Hazi, Andrew
Object Type:
Report
System:
The UNT Digital Library
2005 Annual Report Summer Research Institute Interfacial and Condensed Phase Chemical Physics
The Pacific Northwest National Laboratory (PNNL) hosted its second annual Summer Research Institute in Interfacial and Condensed Phase Chemical Physics from May through September 2005. During this period, sixteen PNNL scientists hosted fourteen young scientists from eleven different universities. Of the fourteen participants, twelve were graduate students; one was a postdoctoral fellow; and one was a university faculty member.
Date:
November 15, 2005
Creator:
Barlow, Stephan E.
Object Type:
Report
System:
The UNT Digital Library
2005 BRAC COMMISSION HEARINGS THURSDAY, AUGUST 11, 2005 AFTERNOON SESSION 1:00 PM, WASHINGTON, D.C.
2005 BRAC COMMISSION HEARINGS THURSDAY, AUGUST 11, 2005 AFTERNOON SESSION 1:00 PM, WASHINGTON, D.C.
Date:
November 8, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Legal Document
System:
The UNT Digital Library
2005 BRAC COMMISSION REGIONAL HEARING FINAL DOCUMENT FRIDAY, JUNE 24, 2005. CLOVIS, NEW MEXICO.
2005 BRAC COMMISSION REGIONAL HEARING FINAL DOCUMENT FRIDAY, JUNE 24, 2005. CLOVIS, NEW MEXICO.
Date:
November 8, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Legal Document
System:
The UNT Digital Library
2005 BRAC COMMISSION REGIONAL HEARING FRIDAY, JULY 22, 2005 NEW ORLEANS, LOUISIANA. PARTICIPATING STATES: MISSISSIPPI LOUISIANA FLORIDA
2005 BRAC COMMISSION REGIONAL HEARING FRIDAY, JULY 22, 2005 NEW ORLEANS, LOUISIANA. PARTICIPATING STATES: MISSISSIPPI LOUISIANA FLORIDA
Date:
November 8, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Legal Document
System:
The UNT Digital Library
2005 BRAC COMMISSION REGIONAL HEARING FRIDAY, JUNE 17, 2005 PORTLAND, OREGON. PARTICIPATING STATES: OREGON MONTANA WASHINGTON IDAHO
2005 BRAC COMMISSION REGIONAL HEARING FRIDAY, JUNE 17, 2005 PORTLAND, OREGON. PARTICIPATING STATES: OREGON MONTANA WASHINGTON IDAHO
Date:
November 8, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Legal Document
System:
The UNT Digital Library
2005 BRAC COMMISSION REGIONAL HEARING MONDAY, JULY 11, 2005 SAN ANTONIO, TEXAS PARTICIPATING STATES: TEXAS ARKANSAS OKLAHOMA
2005 BRAC COMMISSION REGIONAL HEARING MONDAY, JULY 11, 2005 SAN ANTONIO, TEXAS PARTICIPATING STATES: TEXAS ARKANSAS OKLAHOMA
Date:
November 8, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Legal Document
System:
The UNT Digital Library
2005 BRAC COMMISSION REGIONAL HEARING MONDAY, JULY 18, 2005, WASHINGTON, D.C. 8:30 AM.
2005 BRAC COMMISSION REGIONAL HEARING MONDAY, JULY 18, 2005, WASHINGTON, D.C. 8:30 AM. SECDEF RESPONSE TO COMMISSION JULY 1, 2005 LETTER GAO BRAC ANALYSIS REPORT OVERSEAS BASING COMMISSION REPORT
Date:
November 8, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Legal Document
System:
The UNT Digital Library
2005 BRAC COMMISSION REGIONAL HEARING MONDAY, JUNE 20, 2005 ST. LOUIS UNIVERSITY. STATES TESTIFYING: MISSOURI ILLINOIS IOWA KENTUCKY INDIANA MICHIGAN WISCONSIN
2005 BRAC COMMISSION REGIONAL HEARING MONDAY, JUNE 20, 2005 ST. LOUIS UNIVERSITY. STATES TESTIFYING: MISSOURI ILLINOIS IOWA KENTUCKY INDIANA MICHIGAN WISCONSIN
Date:
November 8, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Legal Document
System:
The UNT Digital Library
2005 BRAC COMMISSION REGIONAL HEARING MONDAY, JUNE 27, 2005 1:00 PM, BUFFALO, NEW YORK.
2005 BRAC COMMISSION REGIONAL HEARING MONDAY, JUNE 27, 2005 1:00 PM, BUFFALO, NEW YORK. STATES TESTIFYING: NEW YORK AND OHIO
Date:
November 8, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Legal Document
System:
The UNT Digital Library
2005 BRAC COMMISSION REGIONAL HEARING THURSDAY, JULY 7, 2005 8:41 AM, WASHINGTON, D.C.
2005 BRAC COMMISSION REGIONAL HEARING THURSDAY, JULY 7, 2005 8:41 AM, WASHINGTON, D.C.. STATES TESTIFYING: DISTRICT OF COLUMBIA AND PENNSYLVANIA
Date:
November 8, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Legal Document
System:
The UNT Digital Library
2005 BRAC COMMISSION REGIONAL HEARING THURSDAY, JULY 14, 2005 1:00 PM. LOS ANGELES, CALIFORNIA STATES TESTIFYING: CALIFORNIA AND GUAM.
2005 BRAC COMMISSION REGIONAL HEARING THURSDAY, JULY 14, 2005 1:00 PM. LOS ANGELES, CALIFORNIA STATES TESTIFYING: CALIFORNIA AND GUAM.
Date:
November 8, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Legal Document
System:
The UNT Digital Library
2005 BRAC COMMISSION REGIONAL HEARING TUESDAY, JULY 19, 2005 1:30 PM, WASHINGTON, D.C.
2005 BRAC COMMISSION REGIONAL HEARING TUESDAY, JULY 19, 2005 1:30 PM, WASHINGTON, D.C.
Date:
November 8, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Legal Document
System:
The UNT Digital Library
2005 BRAC COMMISSION REGIONAL HEARING TUESDAY, JUNE 28, 2005, CHARLOTTE, NORTH CAROLINA.
2005 BRAC COMMISSION REGIONAL HEARING TUESDAY, JUNE 28, 2005, CHARLOTTE, NORTH CAROLINA. STATES TESTIFYING NORTH CAROLINA, SOUTH CAROLINA AND WEST VIRGINIA
Date:
November 8, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Legal Document
System:
The UNT Digital Library
2005 BRAC COMMISSION REGIONAL HEARING WEDNESDAY, JUNE 15, 2005, FAIRBANKS, ALASKA. ALASKA REGIONAL HEARING
2005 BRAC COMMISSION REGIONAL HEARING WEDNESDAY, JUNE 15, 2005, FAIRBANKS, ALASKA. ALASKA REGIONAL HEARING
Date:
November 8, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Legal Document
System:
The UNT Digital Library
2005 BRAC COMMISSION REGIONAL HEARINGS MONDAY, AUGUST 8, 2005 1:06 P.M., MONTEREY, CALIFORNIA. STATES TESTIFYING: CALIFORNIA, ALASKA, COLORADO
2005 BRAC COMMISSION REGIONAL HEARINGS MONDAY, AUGUST 8, 2005 1:06 P.M., MONTEREY, CALIFORNIA. STATES TESTIFYING: CALIFORNIA, ALASKA, COLORADO
Date:
November 8, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Legal Document
System:
The UNT Digital Library
2005 BRAC COMMISSION REGIONAL HEARINGS THURSDAY, AUGUST 4, 2005 1:01 PM, WASHINGTON, D.C. STATES TESTIFYING: VIRGINIA (OCEANA NAVAL AIR STATION)
2005 BRAC COMMISSION REGIONAL HEARINGS THURSDAY, AUGUST 4, 2005 1:01 PM, WASHINGTON, D.C. STATES TESTIFYING: VIRGINIA (OCEANA NAVAL AIR STATION)
Date:
November 8, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Legal Document
System:
The UNT Digital Library