Fig. 5: Photoelectric properties the SATO films.
From: Ferroelectric ultraviolet photodetector material with ultrafast response speed
a Logarithmic I-V curves of the SATO PDs under different light wavelengths (250 - 470 nm). The SATO PDs have the strongest response to 330 nm UV light. b I–V curves of the SATO PDs under different power densities at 330 nm. c I–T curves under 330 nm on-off illumination at −2, −6, and −10 V of the SATO PDs. d Responsivity, detectivity, and e On/off ratio curves at different wavelengths. At 330 nm, the responsivity, detectivity, and on/off ratio of the SATO PDs at −2 V are as high as 860 mA/W, 1.63 × 1013 Jones, and 1.9 × 104, respectively. f Time-resolved transient photoresponse curves. The SATO PDs exhibit fast response speed with a rise time (τr) of 6.8 ns and a fall time (τf) of 17.7 ns.
