Structural, optical and electrical properties of delafossite CuGaO2 films grown by sol-gel method

M. J. Han; T. Huang; J. Z. Zhang; Y. W. Li; Z. G. Hu

doi:10.1117/12.2053125

16 December 2013 Structural, optical and electrical properties of delafossite CuGaO₂ films grown by sol-gel method

M. J. Han, T. Huang, J. Z. Zhang, Y. W. Li, Z. G. Hu

Proceedings Volume 9068, Eighth International Conference on Thin Film Physics and Applications; 906809 (2013) https://doi.org/10.1117/12.2053125
Event: Eighth International Conference on Thin Film Physics and Applications (TFPA13), 2013, Shanghai, China

Abstract

Transparent p-type conductive CuGaO₂ films have been fabricated on sapphire substrates by sol–gel method. The stable sol solution for CuGaO₂ were formed by copper(II) acetate monohydrate and gallium(III) nitrate hydrate, and the c-axis orientation of CuGaO₂ films were strengthened with increasing annealing temperature. The pure phase CuGaO₂ film was obtained at 900°C for 30 min in N₂ atmosphere, and its microstructure, compositions, optical and electrical properties were analyzed. It was found that the sol-gel derived CuGaO₂ films show a high optical transparency (60-80%) in the visible region, the direct and indirect band gaps were approximately 3.56 and 3.24 eV, respectively. It shows a crossover from the thermal activation behavior to that of three-dimensional variable range hopping from the temperature-dependent electrical conductivity at about 160 K.

Citation Download Citation

M. J. Han, T. Huang, J. Z. Zhang, Y. W. Li, and Z. G. Hu "Structural, optical and electrical properties of delafossite CuGaO₂ films grown by sol-gel method", Proc. SPIE 9068, Eighth International Conference on Thin Film Physics and Applications, 906809 (16 December 2013); https://doi.org/10.1117/12.2053125

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available