Yong-Taeg Oh and  Won Song and  Seok-Eui Choi and  Bo-Ra Koo and  Dong-Chan Shin,  Work Function Engineering of Functionally Graded ZnO+Ga2O3 Thin Film for Solar Cell and Organic Light Emitting Diodes Applications.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    December 2012, vol. 72(12). 1221 - 1223
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/1237.