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Title: Final Report

Abstract

The objective of this DOE SAI project is to demonstrate the feasibility of electrodeposited and solution-doped transparent conducting oxides (TCOs) such as zinc oxide with resistivity in the mid-10{sup -4} {Omega}-cm range. The target application is an 'on-top' TCO which can be deposited on semiconductors in thin-film and future solar cells including amorphous silicon, copper indium gallium selenide and emerging solar cells. There is no solution-prepared on-top TCO currently used in commercial solar cells. This project, if successful, will fill this gap. Our technical objectives include electrodeposited TCOs with (1) resistivity in the mid-10{sup -4} {Omega}-cm range, (2) post-deposition annealing below 300 C and (3) no-vacuum processing or low-vacuum processing. All the three research objectives listed above have been accomplished in the 14-month period from July 1, 2009 through September 30, 2010. The most noticeable accomplishments of this project are (1) identification of a terawatt-scale dopant for zinc oxide, i.e. yttrium, whose known reserve is enough for 60 peak terawatts of thin-film solar cells; (2) demonstration of a record-low resistivity, 6.3 x 10{sup -5} {Omega}-cm, in solution-deposited zinc oxide with an abundant dopant; and (3) the record-low resistivity was accomplished with a maximum process temperature of 300 C and withoutmore » vacuum annealing. Industrial applications of the new yttrium-doped zinc oxide are being pursued, including (1) green deposition of yttrium-doped zinc oxide to reduce water consumption during deposition and (2) search for an industrial partner to develop an electrochemical tool for large-area uniform deposition of yttrium-doped zinc oxide.« less

Authors:
Publication Date:
Research Org.:
The University of Texas at Arlington
Sponsoring Org.:
USDOE
OSTI Identifier:
1000525
Report Number(s):
DE-EE0000577
TRN: US201202%%596
DOE Contract Number:  
EE0000577
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; ANNEALING; COPPER; DEPOSITION; GALLIUM SELENIDES; INDIUM; OXIDES; PROCESSING; SILICON; SOLAR CELLS; TARGETS; WATER; YTTRIUM; ZINC OXIDES; THIN FILMS

Citation Formats

Dr. Meng Tao. Final Report. United States: N. p., 2010. Web. doi:10.2172/1000525.
Dr. Meng Tao. Final Report. United States. doi:10.2172/1000525.
Dr. Meng Tao. Wed . "Final Report". United States. doi:10.2172/1000525. https://www.osti.gov/servlets/purl/1000525.
@article{osti_1000525,
title = {Final Report},
author = {Dr. Meng Tao},
abstractNote = {The objective of this DOE SAI project is to demonstrate the feasibility of electrodeposited and solution-doped transparent conducting oxides (TCOs) such as zinc oxide with resistivity in the mid-10{sup -4} {Omega}-cm range. The target application is an 'on-top' TCO which can be deposited on semiconductors in thin-film and future solar cells including amorphous silicon, copper indium gallium selenide and emerging solar cells. There is no solution-prepared on-top TCO currently used in commercial solar cells. This project, if successful, will fill this gap. Our technical objectives include electrodeposited TCOs with (1) resistivity in the mid-10{sup -4} {Omega}-cm range, (2) post-deposition annealing below 300 C and (3) no-vacuum processing or low-vacuum processing. All the three research objectives listed above have been accomplished in the 14-month period from July 1, 2009 through September 30, 2010. The most noticeable accomplishments of this project are (1) identification of a terawatt-scale dopant for zinc oxide, i.e. yttrium, whose known reserve is enough for 60 peak terawatts of thin-film solar cells; (2) demonstration of a record-low resistivity, 6.3 x 10{sup -5} {Omega}-cm, in solution-deposited zinc oxide with an abundant dopant; and (3) the record-low resistivity was accomplished with a maximum process temperature of 300 C and without vacuum annealing. Industrial applications of the new yttrium-doped zinc oxide are being pursued, including (1) green deposition of yttrium-doped zinc oxide to reduce water consumption during deposition and (2) search for an industrial partner to develop an electrochemical tool for large-area uniform deposition of yttrium-doped zinc oxide.},
doi = {10.2172/1000525},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Dec 22 00:00:00 EST 2010},
month = {Wed Dec 22 00:00:00 EST 2010}
}

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