光电二极管
材料科学
光电子学
红外线的
兴奋剂
光电探测器
暗电流
夜视
光学
补偿(心理学)
物理
心理学
精神分析
作者
Yu Song,Zhou Zhong,Penghui He,Gang Yu,Qifan Xue,Linfeng Lan,Fei Huang
标识
DOI:10.1002/adma.202201827
摘要
Infrared organic photodiodes have gained increasing attention due to their great application potentials in night vision, optical communication, and all-weather imaging. However, the commonly occurring high dark current and low detectivity impede infrared photodetectors from portable applications at room temperature. Herein, an efficient and generic doping compensation strategy is developed to improve the detectivity of infrared organic photodiodes. A series of n-type organic semiconductors is investigated, and it is found that doping compensation strategy not only reduces the trap density of states and dark currents, but also restrains the nonradiative recombination with improved charge transport and collection. As a result, an ultralow noise spectral density of 8 × 10-15 A Hz-1/2 as well as a high specific detectivity over 1013 Jones in 780-1070 nm is achieved at room temperature. More importantly, the high-performance infrared organic photodiodes can be successfully applied in high-pixel-density image arrays without patterning sensing layers. These findings provide important compensation design insights that will be crucial to further improve the performance of infrared organic photodiodes in the future.
科研通智能强力驱动
Strongly Powered by AbleSci AI