Table 1 UV photoresponse properties of the fabricated BFO (10), BFO(15) and BFO (20) photodetector
Sample | Thickness | Photo responsivity (mA/W) | Dark current (mA) | Photo current (mA) | External quantum efficiency (EQE) % | Rise time (s) | Fall time (s) |
|---|---|---|---|---|---|---|---|
BFO (10) | 243 ± 7 nm | 80 | 4.14 | 4.46 | 27.10 | 9 ± 0.15 | 22 ± 0.14 |
BFO (15) | 365 ± 15 nm | 110 | 3.48 | 3.91 | 37.30 | 6 ± 0.41 | 17 ± 0.39 |
BFO (20) | 660 ± 12 nm | 42 | 2.21 | 2.38 | 14.20 | 11 ± 0.17 | 27 ± 0.14 |