Yao LI, Fenqiang WANG, Ailing WANG, Jun LAN, Hu LIU, Liangpeng LIU, Pengjie ZHANG, Huizhou WU, Ruixia NIU, Xuying ZHANG. High-performance Photomultiplication-type Organic Photodetector Based on Double-donor Ternary Bulk Heterojunction[J]. Acta Photonica Sinica, 2024, 53(3): 0304001
- Acta Photonica Sinica
- Vol. 53, Issue 3, 0304001 (2024)
Fig. 1. Schematic diagram of molecular structure， device structure and material energy level of active layer materials
Fig. 2. Absorption spectrum of ternary blend film
Fig. 3. Dark current density-voltage （JD-V） curve of the device
Fig. 4. Photocurrent density-voltage （JL-V） curve of the device under 1 mW/cm2 illumination
Fig. 5. Current density-voltage （J-V） curves of devices with doping mass ratio of P3HT∶PTB7-Th∶IEICO-4F （60∶40∶1， wt/wt/wt） under dark conditions and illumination at a wavelength of 520 nm
Fig. 6. EQE of the device under -15 V bias voltage
Fig. 7. Responsivity and specific detectivity of the device under -15 V bias
Fig. 8. EQE of devices with optimal mass ratio under different bias voltages
Fig. 9. Jph-Pin curves of devices with optimal mass ratio at different bias voltages and 520 nm
Fig. 10. Schematic diagram of the charge transport of the device and three electron traps in the active layer
Fig. 11. Mobility of the device and photoluminescence spectrum of the active layer
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Table 1. Responsivity and specific detectivity of optimal mass ratio devices at different bias voltages and wavelengths
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Table 2. Comparison of performance parameters between optimal mass ratio devices and current mainstream devices
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