Fig. 1. SEM images of the Bi₂O₃ nanoblocks and Ag/Bi₂O₃ nanoblocks

Fig. 2. EDS spectra of Bi₂O₃ nanoblocks and Ag/Bi₂O₃ nanoblocks

Fig. 3. XRD patterns of Bi₂O₃ nanoblocks and Ag/Bi₂O₃ nanoblocks

Fig. 4. Current response of ultraviolet photodetectors （UVPDs） based on Bi₂O₃ nanoblocks and Ag/Bi₂O₃ nanoblocks

Fig. 5. Single-cycle current curves of UVPDs based on Bi₂O₃ nanoblocks and Ag/Bi₂O₃ nanoblocks respectively

Fig. 6. UV photoresponse transients measured under different UV light intensities and corresponding photocurrent density as function of light intensity for Ag/Bi₂O₃ nanoblocks photodetector

Fig. 7. PL spectra of Bi₂O₃ nanoblocks and Ag/Bi₂O₃ nanoblocks