Annealing effect on the optical and photoelectrochemical properties of lead oxide Wided Zerguine, Djamila Abdi, Farid Habelhames, Meriem Lakhdari, Hassina Derbal-Habak, Yvan Bonnassieux, Denis Tondelier, Jinwoo Choi and Jean Michel Nunzi Eur. Phys. J. Appl. Phys., 84 3 (2018) 30301 Published online: 14 January 2019 DOI: 10.1051/epjap/2018180263