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Highly conductive n- and p-type CuInO thin films by reactive evaporation

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Title Highly conductive n- and p-type CuInO thin films by reactive evaporation
 
Creator MARY, SA
NAIR, BG
NADUVATH, J
OKRAM, GS
REMILLARD, SK
SREENIVASAN, PV
PHILIP, RR
 
Subject Oxide materials
Thin films
Electrical transport
PULSED-LASER DEPOSITION
DELAFOSSITE-TYPE CUINO2
ELECTRICAL-CONDUCTION
ELECTRONIC-STRUCTURE
TRANSPARENT
OXIDE
FABRICATION
TARGETS
GROWTH
CUALO2
 
Description Undoped copper indium oxide films with conductivity three to four orders of magnitude higher than so far reported in this system, exhibiting both n- and p-type polarity are successfully prepared by reactive evaporation method. Hall coefficient and hot probe technique in conjunction with thermopower measurements ascertain the conductivity type of the films to be changing from n- to p-type, as the film composition assessed by energy dispersive analysis of X-rays changed from In rich to Cu rich. The conductivity is found to be similar to 2.1 x 10(1) S/cm in In-rich n-type films where as it is similar to 1.13 x 10(2) S/cm in Cu-rich p-type films with a corresponding increase in carrier concentration and carrier mobility in the latter. Scanning electron micrographs show close assembling of nanograins and X-ray diffraction reveals a change in orientation of crystallites from (006) to (600) as the composition goes from In rich to Cu rich. (C) 2014 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE SA
 
Date 2014-12-28T17:05:31Z
2014-12-28T17:05:31Z
2014
 
Type Article
 
Identifier JOURNAL OF ALLOYS AND COMPOUNDS, 600159-161
0925-8388
1873-4669
http://dx.doi.org/10.1016/j.jallcom.2014.02.113
http://dspace.library.iitb.ac.in/jspui/handle/100/16958
 
Language English