Narrowband and Broadband Dual-Mode Perovskite Photodetector for RGB Detection Application

被引:19
作者
Fan, Qingshan [1 ]
Zhang, Hanqing [1 ]
Li, Keqiang [1 ]
Jin, Ziheng [1 ]
Zhang, Ting [1 ]
Wan, Chen [1 ]
Liu, Xiaodong [1 ]
Li, Shibin [1 ]
Huang, Jiang [1 ,2 ]
机构
[1] Univ Elect Sci & Technol China, Sch Optoelect Sci & Engn, State Key Lab Elect Thin Films & Integrated Device, Chengdu 610054, Peoples R China
[2] Univ Elect Sci & Technol China, Guangdong Inst Elect & Informat Engn, Guangdong 523808, Peoples R China
基金
中国国家自然科学基金; 中国博士后科学基金;
关键词
broadband photodetectors; dual-mode; narrowband photodetectors; perovskites; RGB detection; ULTRAVIOLET;
D O I
10.1002/adom.202300272
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Wavelength-selective light detection is becoming more and more prevalent as new sectors emerge, such as imaging, wearable electronic devices, the Internet of Things, machine vision, and biosensing. Traditional narrowband RGB detection necessitates several separate devices for different colors by changing the active layer materials or applying color filters ahead of the broadband detector, which increases the architectural complexity and limits the quality of color sensing. Here, this work devises a novel dual-mode perovskite photodetector with both narrowband and broadband light sensing based on the imbalance transportation of carriers in the perovskite: Rhodamine B (RhB) active layer. In Mode 1, under light illumination from ITO, a narrowband response in 600-700 nm is obtained with a specific detectivity (D*) of 6.7 x 10(11) Jones, responsivity (R) of 7.6 mA W-1, and a full-width at half-maximum (FWHM) of 80 nm. In Mode 2, under light illumination from Ag, the visible broadband response of 400-700 nm is achieved with a D* of 10(12) Jones and R over 80 mA W-1. Furtherly, by designing a simple optical system and signal processing, RGB light signals are detected independently and panchromatic image sensing and rebuilding are realized. This work will give inspiration to architecture design for multi-band integrated photodetectors.
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页数:9
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