Fig. 4: Stability of organic detector.
a Dark current drift curves of 4MHB and 4HCB with continuously 7300 s working. b Dark current drift of 4MHB with comparison to other materials. c I-t curves of 4MHB detector with 58.76 μGyair s−1 X-ray irradiation with varying bias voltages. d I-t curves of long-term work stability at bias voltage of 30 V (right panel is the extracted one on-off cycle from left figure to show the detailed rise and fall stages corresponding to X-ray on and off). e Comparison of photocurrent-dose rate curves before and after storage of 42 days, with inset showing I-t curves after 42-day storage. f Photocurrent stability of 4MHB under continuous X-ray irradiation at different dose rates (57.98, 45.61 and 33.21 μGyair s−1), with inset showing current drift rate at 1000 s. g Photocurrent cycling stability of 4MHB under continuous X-ray exposure (dose rate: 10.02 mGyair s−1) with 1-h irradiation intervals.
