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P-TYPE TRANSPARENT CONDUCTING NICKEL OXIDE ALLOYS

United States Patent Application

*** PATENT GRANTED ***
20170355615
10,079,189
A1
View the Complete Application at the US Patent & Trademark Office
Disclosed herein is the formation of p-type transparent conducting oxides (TCO) having a structure of Mg.sub.xNi.sub.1-xO or Zn.sub.xNi.sub.1-xO. These structures disrupt the two-dimensional confinement of individual holes (the dominant charge carrier transport mechanism in pure NiO) creating three-dimensional hole transport by providing pathways for hole transfer in directions that are unfavorable in pure NiO. Forming these structures preserves NiO's transparency to visible light since the band gaps do not deviate significantly from that of pure NiO. Furthermore, forming Mg.sub.xNi.sub.1-xO or Zn.sub.xNi.sub.1-xO does not lead to hole trapping on O ions adjacent to Zn and Mg ions. The formation of these alloys will lead to creation of three-dimensional hole transport and improve NiO's conductivity for use as p-type TCO, without adversely affecting the favorable properties of pure NiO.
Carter, Emily Ann (Belle Mead, NJ), Alidoust, Nima (New York, NY)
The Trustees of Princeton University (Princeton NJ)
15/ 617,339
June 8, 2017
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] This invention was made with government support under Grant No. DESC0002120 awarded by the U.S. Department of Energy. The government has certain rights in the invention.