Defect analysis of sputter grown cupric oxide for optical and electronics application

Dalapati, Goutam Kumar, Kajen, Rasanayagam Sivasayan, Masudy-Panah, Saeid, & Sonar, Prashant (2015) Defect analysis of sputter grown cupric oxide for optical and electronics application. Journal of Physics D: Applied Physics, 48(49), Article no. 495104.

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We have studied the defect density and defect level of sputter grown cupric oxide (CuO) for optical and electronic applications. A deep level transient spectroscopy (DLTS) technique has been employed to study the defect density in the CuO thin film deposited by sputtering. The DLTS studied showed that the defect density significantly reduced for the film grown at a high working pressure. It has also been shown that doping density increases for the film grown at a high working pressure. Transmission electron microscopy analysis revealed the improvement of the crystal quality of the CuO thin film prepared at the high working pressure. The band gap of sputter grown CuO was found to be ~1.4 eV with an absorption coefficient of ~104 cm−1. From a photoelectron spectroscopy measurement, it was found that the work function for CuO was ~5.2 eV. The present work reveals the importance of CuO for optical and electronic device applications.

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ID Code: 99796
Item Type: Journal Article
Refereed: Yes
Keywords: cupric oxide, sputter grown, defect density
DOI: 10.1088/0022-3727/48/49/495104
ISSN: 1361-6463
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2015 IOP Publishing Ltd
Copyright Statement: This is an author-created, un-copyedited version of an article accepted for publication/published
in Journal of Physics D: Applied Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at
Deposited On: 10 Oct 2016 23:57
Last Modified: 25 Oct 2016 04:36

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