Laser & Optoelectronics Progress, Volume. 59, Issue 1, 0100003(2022)
Research Progress of Photomultiplication-Type Organic Photodetectors
Fig. 1. Different detectors[23]. (a) Device structure of the PM-type photodetectors; (b) EQE spectrum of the photodetectors with PbS QDs under reverse bias from 0 to -7 V (inset: EQE under logarithmic coordinates); energy diagram of photodetectors under illumination (c) without and (d) with PbS QDs traps
Fig. 2. Photodetector doped with C60 nanoparticles in the photosensitive layer[25]. (a) Diagram of device structure; (b) energy level diagram of OPD
Fig. 3. Schematic images of interfacial barriers of PM-type OPD under reverse bias in dark and under illumination[26]. (a) Without LiF interfacial layer; (b) with LiF interfacial layer
Fig. 4. Principle diagram[29]. (a) Traditional OPDs under short-wavelength light illumination; (b) traditional OPDs under 650 nm light illumination; (c) PM-type OPD under short- wavelength light illumination; (d) PM-type OPD under 650 nm light illumination
Fig. 5. CIN narrowband photomultiplier[31]. (a) Schematic structure diagram of the prepared OPD; (b) transmittance spectrum of Al films with different thickness; (c) EQE spectrum of the OPD with different thickness of Al electrode under bottom illumination condition at -20 V bias; (d) EQE spectrum of the corresponding OPD under top illumination condition at -20 V bias
Fig. 6. Capture hole[47]. (a) Energy level diagram of OPD; (b) EQE spectrum of PM-type OPD under different reverse bias
Fig. 7. Schematic of UV light induced oxygen desorption from the surface of ZnO nanoparticles and the concomitant change in surface energy level structure and free electron density[56]. (a) In the cases of pristine; (b) under UV light illumination and (c) after UV light treatment; (d) working mechanism of the OPD
Fig. 8. Working mechanism of the OPD[58]. (a) In dark; (b) under illumination
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Haoyu Wang, Shuanghong Wu, Haolin Zhang, Sheng Wang, Rui Wang, Xiangru Wang. Research Progress of Photomultiplication-Type Organic Photodetectors[J]. Laser & Optoelectronics Progress, 2022, 59(1): 0100003
Category: Reviews
Received: Dec. 7, 2020
Accepted: Jan. 21, 2021
Published Online: Dec. 23, 2021
The Author Email: Wu Shuanghong (shwu@uestc.edu.cn), Wang Xiangru (xiangruwang@uestc.edu.cn)