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Influence of the Cation Ratio on Optical and Electrical Properties of Amorphous Zinc-Tin-Oxide Thin Films Grown by Pulsed Laser Deposition
Author(s) -
Sofie Bitter,
Peter Schlupp,
Michael Bonholzer,
Holger von Wenckstern,
Marius Grundmann
Publication year - 2016
Publication title -
acs combinatorial science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 81
eISSN - 2156-8952
pISSN - 2156-8944
DOI - 10.1021/acscombsci.5b00179
Subject(s) - tin , amorphous solid , chemistry , pulsed laser deposition , zinc , analytical chemistry (journal) , ternary operation , electrical resistivity and conductivity , tin oxide , deposition (geology) , thin film , oxide , inorganic chemistry , nanotechnology , materials science , crystallography , paleontology , organic chemistry , sediment , biology , electrical engineering , engineering , chromatography , computer science , programming language
Continuous composition spread (CCS) methods allow fast and economic exploration of composition dependent properties of multielement compounds. Here, a CCS method was applied for room temperature pulsed laser deposition (PLD) of amorphous zinc-tin-oxide to gain detailed insight into the influence of the zinc-to-tin cation ratio on optical and electrical properties of this ternary compound. Our CCS approach for a large-area offset PLD process utilizes a segmented target and thus makes target exchange or movable masks in the PLD chamber obsolete. Cation concentrations of 0.08-0.82 Zn/(Zn + Sn) were achieved across single 50 × 50 mm(2) glass substrates. The electrical conductivity increases for increasing tin content, and the absorption edge shifts to lower energies. The free carrier concentration can be tuned from 10(20) to 10(16) cm(-3) by variation of the cation ratio from 0.1 to 0.5 Zn/(Zn + Sn).

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