ZnO/PS/p-Si heterojunction properties Uday Muhsin Nayef, Mohammed Waleed Muayad and Haider Amer Khalaf Eur. Phys. J. Appl. Phys., 66 2 (2014) 20104 Published online: 05 June 2014 DOI: 10.1051/epjap/2014130470