Reda Moubah, Olivier Rousseau, Dorothée Colson, Alla Artemenko, Mario Maglione and Michel Viret Photoelectric Effects in Single Domain BiFeO3 Crystals Advanced Functional Materials 22
The mechanism leading to the creation of the diodelike structure in BiFeO3 single crystals is shown. In the virgin state, the distribution of oxygen vacancies is homogenous. Under illumination with an applied electric field, positively charged oxygen vacancies are created and they electromigrate, following the field direction, towards the electrode interface.
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