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Record Conductivity for P-Type Transparent Conductors in Polycrystalline Thin Films of a Sulfide-Fluoride

Published online by Cambridge University Press:  01 February 2011

Jesse Frantz ,
Jasbinder S. Sanghera ,
Syed B. Qadri  and
Ishwar D. Aggarwal
Jesse Frantz
Affiliation:
jfrantz@ccs.nrl.navy.mil, SFA, Inc., Contractor, 2200 Defense Hwy., Suite 405, Crofton, MD, 21114, United States, 202-767-9519
Jasbinder S. Sanghera
Affiliation:
sanghera@nrl.navy.mil, U.S. Naval Research Laboratory, Code 5606, 4555 Overlook Ave. SW, Washington, DC, 20375, United States
Syed B. Qadri
Affiliation:
syed.qadri@nrl.navy.mil, U.S. Naval Research Laboratory, Code 5606, 4555 Overlook Ave. SW, Washington, DC, 20375, United States
Ishwar D. Aggarwal
Affiliation:
ishwar.aggarwal@nrl.navy.mil, U.S. Naval Research Laboratory, Code 5606, 4555 Overlook Ave. SW, Washington, DC, 20375, United States
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Abstract

Barium copper sulfur fluoride thin films with a face-centered cubic phase in the Fm3m space group were synthesized via RF magnetron sputtering. The results of a detailed optical and electronic characterization of the films are presented. As-deposited, they exhibit degenerate p-type conductivity at room temperature of approximately 260 S/cm – higher than that of any previously reported p-TC. Their conductivity after post-deposition processing increases to as high as 800 S/cm. The films exhibit bandgaps ranging from 1.45-1.75 eV. They are typically deposited with a substrate temperature between room temperature and 100°C, making them suitable for deposition on plastic as well as glass or crystalline substrates. It was found that a silica protective layer reduces degradation in film transparency that is caused by exposure to air.

Keywords

transparent conductorsputteringphotovoltaic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1101: Symposium KK – Light Management in Photovoltaic Devices–Theory and Practice , 2008 , 1101-KK02-04
Copyright
Copyright © Materials Research Society 2008

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References

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