Acta Photonica Sinica, Volume. 49, Issue 10, 1025001(2020)

Multiplying Organic Photodetector Based on Double-doped C60:DDQ Trap

Tao AN, Xi-mei WU, and Xin-ying LIU
Author Affiliations
  • College of Automation and Information Engineering,Xi'an University of Technology,Xi'an 710048,China
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    Organic photomultiplier detector with high trap concentration is developed by double doping method. By keeping the optimal doping ratio of C60 unchanged (1.0 wt%) based on the optimized single-doped device (active layer is P3HT:PC61BM:C60), while doping both C60 and DDQ electron traps, the effects of different DDQ doping concentrations on the trap concentration of the P3HT:PC61BM active layer and the photoelectric performance of the detector are studied.The study shows that the maximum doping concentration of the double-doped C60:DDQ active layer was 1.5 wt%, which is about 1.5 times higher than that of the single-doped C60 active layer (maximum doping concentration is 1.0 wt%). The trap concentration of the double-doped C60:DDQ device is 2.02×1018 cm-3, which is about 3.5 times higher than that of the single-doped C60 device (trap concentration is 5.83×1017 cm-3). Under the bias voltage of -2 V, the external quantum efficiency of the double-doped C60:DDQ device is as high as 2015.32%, which is about 10 times higher than that of the single-doped C60 device (external quantum efficiency is 202.60%). The results show that the double doping method can greatly increase the trap concentration, so as to realize the high concentration trap doping of the active layer.

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    Tao AN, Xi-mei WU, Xin-ying LIU. Multiplying Organic Photodetector Based on Double-doped C60:DDQ Trap[J]. Acta Photonica Sinica, 2020, 49(10): 1025001

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    Paper Information

    Category: Optoelectronics

    Received: Jun. 28, 2020

    Accepted: Aug. 11, 2020

    Published Online: Mar. 10, 2021

    The Author Email:

    DOI:10.3788/gzxb20204910.1025001

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