1. Enhanced photovoltaic effect in K substituted BiFeO3 films.
- Author
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Li, Yang, Liu, Xingyun, Sun, Yuxia, Sheng, Su, Liu, Hongri, Yang, Pengying, and Yang, Shuijin
- Subjects
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PHOTOVOLTAIC cells , *SUBSTITUTION reactions , *BISMUTH compounds , *FERRITES , *THIN films , *SOL-gel processes , *X-ray diffraction - Abstract
K substituted BiFeO 3 films have been fabricated on FTO/glass substrates using the sol–gel method. XRD results show that the films are randomly oriented. UV–Vis absorption results indicate that the films exhibit intense absorbance around 500 nm. The band gaps are 2.52 eV, 2.59 eV, 2.64 eV and 2.62 eV for the 0%, 5%, 10% and 20% K substituted films, respectively. Significantly enhanced photovoltaic effect was observed in the 20% K substituted BiFeO 3 film. The short circuit current density and open circuit voltage of the 20% K substituted film are 1.32 μA/cm 2 and −0.45 V, respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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