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RESEARCH PRODUCT

Structural, electrical and optical characteristics of Al-doped zinc oxide thin films deposited by reactive magnetron sputtering

R. KalendarevK VilnisJuris PuransMartins ZubkinsA Azens

subject

Materials scienceSputteringBand gapElectrical resistivity and conductivityDopingAnalytical chemistryTransmittanceSubstrate (electronics)CrystalliteThin film

description

ZnO:Al (AZO) thin films on glass were deposited by DC reactive magnetron sputtering at approximately 300°C substrate temperature. Structural, electrical and optical properties were investigated as a function of oxygen flow. XRD data shows that AZO thin films are polycrystalline with pronounced c-axis orientation and the grain size increasing with the oxygen flow. The lowest achieved resistivity within the deposited set of samples was 7.6·10 -4 Ωcm. The transmittance of AZO films was above 80 % at 550 nm with the optical band gap between 3.4 and 3.8 eV.

https://doi.org/10.1088/1757-899x/49/1/012057