光子学报 ›› 2020, Vol. 49 ›› Issue (10): 1025001-1025001.doi: 10.3788/gzxb20204910.1025001

• 光电子学 • 上一篇    下一篇

基于双掺杂C60:DDQ陷阱的倍增型有机光电探测器

安涛(), 吴禧梅, 刘欣颖   

  1. 西安理工大学 自动化与信息工程学院,西安 710048
  • 收稿日期:2020-06-28 接受日期:2020-08-11 出版日期:2020-10-25 发布日期:2020-10-13
  • 作者简介:安涛(1986—),男,副教授,博士,主要研究方向为新型功率半导体器件、新型有机半导体光电器件等. Email: antao@xaut.edu.cn
  • 基金资助:
    陕西省自然科学基础研究计划(2019JM251)

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

Tao AN(), Xi-mei WU, Xin-ying LIU   

  1. College of Automation and Information Engineering,Xi'an University of Technology,Xi'an 710048,China
  • Received:2020-06-28 Accepted:2020-08-11 Online:2020-10-25 Published:2020-10-13
  • Supported by:
    Natural Science Basic Research Project of Shaanxi(2019JM251)

摘要:

采用双掺杂方法,实现了具有高陷阱浓度的有机光电倍增探测器.在优化的单掺杂(活性层为P3HT:PC61BM:C60)器件基础上,保持C60的最优掺杂比例不变(1.0 wt%),同时掺杂C60和DDQ两种电子陷阱,研究不同DDQ掺杂浓度对P3HT:PC61BM活性层中陷阱浓度和探测器光电性能的影响.结果表明,双掺杂C60:DDQ活性层的最大掺杂浓度为1.5 wt%,与单掺杂C60活性层(最大掺杂浓度为1.0 wt%)相比提高了约1.5倍;双掺杂C60:DDQ器件的陷阱浓度为2.02×1018 cm-3,与单掺杂C60器件(陷阱浓度为5.83×1017 cm-3)相比提高了约3.5倍;在-2 V偏压下,双掺杂C60:DDQ器件的外量子效率高达2015.32%,比单掺杂C60器件(外量子效率为202.60%)提高了约10倍.采用双掺杂方法可以大大提高陷阱浓度,从而实现活性层的高浓度陷阱掺杂.

关键词: 有机光电倍增探测器, 双掺杂, 陷阱浓度, 掺杂浓度, 外量子效率

Abstract:

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.

Key words: Organic photomultiplier detector, Double doping, Trap concentration, Doping concentration, External quantum efficiency

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