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Title: The effect of deposition power on the electrical properties of Al-doped zinc oxide thin films

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.3483232· OSTI ID:21466907
;  [1]; ;  [2];  [3];  [4];  [5]
  1. Department of Chemical and Materials Engineering, University of Idaho, Moscow, Idaho 83844-3024 (United States)
  2. CRANN, School of Physics, Trinity College Dublin, Dublin 2 (Ireland)
  3. IPMC, Ecole Polytechnique Federale de Lausanne, Station 3, CH-1015 Lausanne (Switzerland)
  4. Data and Storage R and D Laboratory, Seocho R and D Campus, LG Electronics, Seoul 137-130 (Korea, Republic of)
  5. Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig (Germany)

We investigated the effect on the electronic properties of aluminum (Al)-zinc oxide (ZnO) films by modulating the radio frequency sputtering power. Our experimental results show that increasing the sputtering power increases the Al doping concentration, decreases the resistivity, and also shifts the Zn 2p and O 1s to higher binding energy states. Our local-density approximation (LDA) and LDA+U calculations show that the shift in higher binding energy and resistivity decrease are due to an enhancement of the O 2p-Zn 3d coupling and the modification of the Zn 4s-O 2p interaction in ZnO induced by Al doping.

OSTI ID:
21466907
Journal Information:
Applied Physics Letters, Vol. 97, Issue 8; Other Information: DOI: 10.1063/1.3483232; (c) 2010 American Institute of Physics; ISSN 0003-6951
Country of Publication:
United States
Language:
English

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