多光谱图像
窄带
材料科学
探测器
半最大全宽
光电子学
光电探测器
光学
光电二极管
带宽(计算)
响应度
计算机科学
物理
电信
人工智能
作者
Zeyao Han,Xunfan Liao,Yousheng Zou,Yang He,Junyu Li,Yu Gu,Dan Hu,Jiaxin Liu,Lijian Zuo,Yongsheng Liu,Xiaobao Xu
出处
期刊:ACS Nano
[American Chemical Society]
日期:2022-12-09
卷期号:16 (12): 21036-21046
被引量:5
标识
DOI:10.1021/acsnano.2c08731
摘要
Multispectral sensing is extremely desired in intelligent systems, e.g., autonomous vehicles, encrypted information communication, and health biometric monitoring, due to its highly sensitive spectral discrimination ability. Nevertheless, rigid bulky optics and delicate optical paths in devices significantly increase their complexity and size, which subsequently impede their integration in smart optoelectronic chips for universal applications. In this work, a filterless miniaturized multispectral photodetector is realized with an organic narrowband response unit array. With the manipulation of Frenkel exciton dissociation in active layers, a series of narrowband organic sensing units with full-width-at-half-maximum (fwhm) narrowing to ∼50 nm are achieved from 700 to 1050 nm with a laudable performance of responsivity of over 60 mA/W, -3 dB bandwidth over 10 kHz, linear dynamic range (LDR) reaching ∼120 dB, and a low noise current of less than 4 × 10-14 A·Hz-0.5. Furthermore, a 6 × 8 multispectral sensing array on a flexible substrate was fabricated with blade-coating. Assisted by a computational process, we successfully demonstrate the spectral recognition with a resolution of ∼50 nm and a mismatch of ∼10 nm. Finally, the function of matter identification is successfully achieved with our multispectral detector array.
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