Journal
ACS PHOTONICS
Volume 1, Issue 8, Pages 703-709Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ph500118y
Keywords
TCO; plasmonics; surface-plasmon polariton; Al-doped ZnO; DFT
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Funding
- University of Modena and Reggio Emilia through grant 'Nano- and emerging materials and systems for sustainable technologies'
- European Union Seventh Framework Programme [265073]
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Using first-principles calculations, we investigate the origin of near infrared plasmonic activity in Al:ZnO transparent conducting oxides. Our results predict realistic values for the plasma frequency and the free electron density as a function of the Al doping and in agreement with recent experimental results. We also provide a microscopic insight on the formation of surface-plasmon polaritons at the Al:ZnO/ZnO interfaces in terms of characteristic lengths that can be measured by experiments. The direct comparison with standard plasmonic metals underlines the promising capabilities of transparent conducting oxides as compact and low-loss plasmonics materials for optoelectronic applications and telecommunications.
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