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Quantum-Tuned Cascade Multijunction Infrared Photodetector
2023-09-21
发表期刊ACS NANO (IF:15.8[JCR-2023],16.2[5-Year])
ISSN1936-0851
EISSN1936-086X
卷号17期号:19页码:18864-18872
发表状态已发表
DOI10.1021/acsnano.3c03852
摘要

Emerging applications such as augmented reality, self-driving vehicles, and quantum information technology require optoelectronic devices capable of sensing a low number of photons with high sensitivity (including gain) and high speed and that could operate in the infrared at telecom windows beyond silicon's bandgap. State-of-the-art semiconductors achieve some of these functions through costly and not easily scalable doping and epitaxial growing methods. Colloidal quantum dots (QDs), on the other hand, could be easily tuned and are compatible with consumer electronics manufacturing. However, the development of a QD infrared photodetector with high gain and high response speed remains a challenge. Herein, we present a QD monolithic multijunction cascade photodetector that advances in the speed-sensitivity-gain space through precise control over doping and bandgap. We achieved this by implementing a QD stack in which each layer is tailored via bandgap tuning and electrostatic surface manipulation. The resulting junctions sustain enhanced local electric fields, which, upon illumination, facilitate charge tunneling, recirculation, and gain, but retain low dark currents in the absence of light. Using this platform, we demonstrate an infrared photodetector sensitive up to 1500 nm, with a specific detectivity of similar to 3.7 x 10(12) Jones, a 3 dB bandwidth of 300 kHz (0.05 cm(2) device), and a gain of similar to 70x at 1300 nm, leading to an overall gain-bandwidth product over 20 MHz, in comparison with 3 kHz of standard photodiode devices of similar areas.

关键词colloidal quantum dots infrared photodetector cascade gain bandwidth
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收录类别SCI ; EI
语种英语
资助项目National Key Research and Development Program of China[2021YFA0715502] ; National Natural Science Foundation of China[
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号WOS:001070236200001
出版者AMER CHEMICAL SOC
EI入藏号20234314971843
EI主题词Bandwidth
EI分类号701.1 Electricity: Basic Concepts and Phenomena ; 712.1 Semiconducting Materials ; 714.2 Semiconductor Devices and Integrated Circuits ; 716.1 Information Theory and Signal Processing ; 723 Computer Software, Data Handling and Applications ; 741.1 Light/Optics ; 761 Nanotechnology ; 931.3 Atomic and Molecular Physics ; 931.4 Quantum Theory ; Quantum Mechanics ; 933.1 Crystalline Solids
原始文献类型Journal article (JA)
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/340923
专题物质科学与技术学院
物质科学与技术学院_PI研究组_宁志军组
物质科学与技术学院_硕士生
物质科学与技术学院_博士生
通讯作者de Arquer, F. Pelayo Garcia; Ning, Zhijun
作者单位
1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
2.Barcelona Inst Sci & Technol, ICFO Inst Ciencies Foton, Barcelona 08860, Spain
第一作者单位物质科学与技术学院
通讯作者单位物质科学与技术学院
第一作者的第一单位物质科学与技术学院
推荐引用方式
GB/T 7714
Zhou, Wenjia,Xu, Rui,Wu, Haobo,et al. Quantum-Tuned Cascade Multijunction Infrared Photodetector[J]. ACS NANO,2023,17(19):18864-18872.
APA Zhou, Wenjia.,Xu, Rui.,Wu, Haobo.,Jiang, Xianyuan.,Wang, Hao.,...&Ning, Zhijun.(2023).Quantum-Tuned Cascade Multijunction Infrared Photodetector.ACS NANO,17(19),18864-18872.
MLA Zhou, Wenjia,et al."Quantum-Tuned Cascade Multijunction Infrared Photodetector".ACS NANO 17.19(2023):18864-18872.
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