Dawei Cao, Ming Li, Jianfei Zhu, Yanfang He, Tong Chen, Yuan Liu, Mingming Chen, Ying Yang. Enhancement of photoelectrochemical performance in ferroelectric films via the introduction of an Au buffer layer[J]. Journal of Semiconductors, 2021, 42(11): 112701
- Journal of Semiconductors
- Vol. 42, Issue 11, 112701 (2021)
Fig. 1. (Color online) SEM images of (a) BFO and (b) Au/BFO. (c) XRD spectra of BFO and Au/BFO. (d) XPS spectra of BFO.
Fig. 2. (Color online) (a) J–V , (b) J–t and (c) IPCE curves of BFO and Au/BFO. (d) Photocurrent of the Au/BFO and positively or negatively poled Au/BFO under –0.4 V vs Ag/AgCl.
Fig. 3. (Color online) (a) Absorbance spectra, (b) light harvesting efficiencies (η LHE), (c) electron flux and (d) charge separation efficiency (η separation) of BFO and Au/BFO.
Fig. 4. (Color online) (a) The PL spectra and (b) transient PL decay spectra of BFO and Au/BFO.
Fig. 5. (Color online) (a) Nyquist plots of electrochemical impedance spectra and (b) Mott-Schottky plots of BFO and Au/BFO.
Fig. 6. (Color online) (a) Schematic of work function of FTO, Au and BFO. Schematic of the electron-transfer mechanism of (b) FTO/BFO and (c) FTO/Au/BFO. The photogenerated carrier transfer mechanism of Au/BFO photoelectrode under (d) no poling, (e) positive poling and (f) negative poling.
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