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Ultraviolet Wavelength Identification Using Energy Distribution of Hot Electrons.


ABSTRACT: Light wavelength identification is essential for many optical and optoelectronic applications. Here, we report a novel wavelength identification photodetector based on the energy distribution of hot electrons at the metal/insulator interface. The information of the light wavelength can be stored in the energy distribution of the hot electrons, which can then be readout in the form of the current-voltage characteristics. On the basis of this principle, the high-reliability wavelength identification of the monochromatic light has been realized with a simple Al/SiO2/Si structure. The device has an excellent stability with dark current below 1 × 10-7 A/m2. Moreover, the wavelength of the monochromatic light in the deep ultraviolet range can be identified. This new principle will pave a new solution to design high-performance single-chip wavelength identification photodetectors and integrated miniaturized wavelength identification systems.

SUBMITTER: Yu Z 

PROVIDER: S-EPMC6641639 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature

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Ultraviolet Wavelength Identification Using Energy Distribution of Hot Electrons.

Yu Zhiguo Z   Liu Lei L   Wang Kaiyou K   Wang Junxi J   Li Jinmin J   Zhao Lixia L  

ACS omega 20170718 7


Light wavelength identification is essential for many optical and optoelectronic applications. Here, we report a novel wavelength identification photodetector based on the energy distribution of hot electrons at the metal/insulator interface. The information of the light wavelength can be stored in the energy distribution of the hot electrons, which can then be readout in the form of the current-voltage characteristics. On the basis of this principle, the high-reliability wavelength identificati  ...[more]

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