Non-Equilibrium Deposition of Phase Pure Cu2O Thin Films at Reduced Growth Temperature

Archana Subramaniyan, John D. Perkins, Ryan P. O'Hayre, Stephan Lany, Vladan Stevanovic, David S. Ginley, Andriy Zakutayev

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58 Scopus Citations

Abstract

Cuprous oxide (Cu2O) is actively studied as a prototypical material for energy conversion and electronic applications. Here we reduce the growth temperature of phase pure Cu2O thin films to 300-°C by intentionally controlling solely the kinetic parameter (total chamber pressure, Ptot) at fixed thermodynamic condition (0.25 mTorr pO2). A strong non-monotonic effect of Ptot on Cu-O phase formation is found using high-throughput combinatorial-pulsed laser deposition. This discovery creates new opportunities for the growth of Cu2O devices with low thermal budget and illustrates the importance of kinetic effects for the synthesis of metastable materials with useful properties.

Original languageAmerican English
Article number022105
Number of pages6
JournalAPL Materials
Volume2
Issue number2
DOIs
StatePublished - Feb 2014

NREL Publication Number

  • NREL/JA-5900-61366

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