Laser energy tuning of carrier effective mass and thermopower in epitaxial oxide thin films | Zendy

Anas Abutaha | Zendy; S. R. Sarath Kumar | Zendy; Husam N. Alshareef | Zendy

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Laser energy tuning of carrier effective mass and thermopower in epitaxial oxide thin films

Author(s) -

Anas Abutaha,

S. R. Sarath Kumar,

Husam N. Alshareef

Publication year - 2012

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4704183

Subject(s) - fluence , pulsed laser deposition , materials science , thin film , epitaxy , laser , optoelectronics , thermoelectric effect , doping , seebeck coefficient , effective mass (spring–mass system) , oxide , analytical chemistry (journal) , optics , chemistry , nanotechnology , layer (electronics) , thermal conductivity , composite material , physics , quantum mechanics , chromatography , metallurgy , thermodynamics

The effect of the laser fluence on high temperature thermoelectric properties of the La doped SrTiO3 (SLTO) thin films epitaxially grown on LaAlO3 〈100〉 substrates by pulsed laser deposition is clarified. It is shown that oxygen vacancies that influence the effective mass of carriers in SLTO films can be tuned by varying the laser energy. The highest power factor of 0.433 W K−1 m−1 has been achieved at 636 K for a filmdeposited using the highest laser fluence of 7 J cm−2 pulse−1

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