光电探测器
材料科学
光电流
紫外线
光电子学
纳米复合材料
暗电流
量子效率
光活性层
活动层
图层(电子)
纳米技术
能量转换效率
聚合物太阳能电池
薄膜晶体管
作者
Dali Shao,Mingpeng Yu,Hongtao Sun,Guoqing Xin,Jie Lian,Shayla Sawyer
摘要
An ultraviolet (UV) photodetector is fabricated by sandwiching a nanocomposite active layer between charge-selective semiconducting polymers. The nanocomposite active layer composed of TiO2 nanoparticles (NPs) blended with 1,3-bis(N-carbazolyl)benzene (mCP), which acts as a "valve" controller that enables hole injection into the device upon UV illumination. The UV photodetector demonstrated a high photocurrent to dark current ratio (∼10(4)), a large linear dynamic range of 60 dB, and a remarkable external quantum efficiency (∼8.5 × 10(4)%) for the UV light at 351 nm. In addition to discussing the performance of the UV photodetector, a general strategy for design and fabrication of high-performance UV photodetectors with hole injection operation mode is suggested.
科研通智能强力驱动
Strongly Powered by AbleSci AI