Annealing dependence on flexible p-CuGaO2/n-ZnO heterojunction diode deposited by RF sputtering methodMui Li Lam, Muhammad Hafiz Abu Bakar, Wai Yip Lam, Afishah Alias, Abu Bakar Abd Rahman, Khairul Anuar Mohamad and Katsuhiro UesugiEPJ Web Conf., 162 (2017) 01061DOI: https://doi.org/10.1051/epjconf/201716201061