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Вид документа
: Статья из журнала
Шифр издания
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Автор(ы)
: Huang, Cheng-Han, Wu, Chia-Hung, Bikbaev R. G., Ye, Ming-Jyun, Chen, Chi-Wen, Wang, Tung-Jung, Timofeev I. V., Lee, Wei, Chen, Kuo-Ping
Заглавие
: Wavelength- and angle-selective
photodetectors
enabled by graphene hot electrons with Tamm plasmon polaritons
Место публикации
: Nanomaterials. - 2023. - Vol. 13, Is. 4. - Ст.693. - ISSN 20794991 (eISSN),
DOI
10.3390/nano13040693
Примечания
: Cited References: 50. - This work is supported by the Higher Education Sprout Project of the National Yang Ming Chiao Tung University, National Tsing Hua University, Ministry of Education and the National Science and Technology Council (NSTC 110-2221-E-007-130-MY3; 109-2628-E-007-003-MY3; 111-2923-E-007-008-MY3; 111-2628-E-007-021; 111-2119-M-A49-006). This research was funded by the Russian Science Foundation (project no. 22-42-08003)
Аннотация:
Recently, two-dimensional materials have attracted attention owing to their special optical characteristics and miniaturization, with low thickness as well as extremely high responsivity. Additionally, Tamm plasmon polariton (TPP) resonance can be observed by combining a metal film and a one-dimensional (1D) photonic crystal (PC), where an electric field confinement is located at the metal–1D PC interface. In this study, a graphene layer combined with a TPP is proposed as a wavelength- and angle-selective photodetector. The graphene layer is located where the strong field confinement occurs, and the photocurrent response is significantly enhanced with increasing absorption by over four times (from 62.5 μA⋅W−1 to 271 μA⋅W−1 and undetected state to 330 μA⋅W−1 in two different samples). Moreover, the graphene–TPP photodetector has wavelength and angle selectivity, which can be applied in LiDAR detecting, sun sensors, laser beacon tracking, and navigational instruments in the future.
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2.
Вид документа
: Статья из журнала
Шифр издания
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Автор(ы)
: Zhou Z. -X., Ye M. -J., Yu M. -W., Yang J. -H., Su K. -L., Yang C. -C., Lin C. -Y., Babicheva V. E., Timofeev I. V., Chen K. -P.
Заглавие
: Germanium metasurfaces with lattice Kerker effect in near-infrared
photodetectors
Место публикации
: ACS Nano. - 2022. - Vol. 16. Is. 4. - P.5994-6001. - ISSN 19360851 (ISSN),
DOI
10.1021/acsnano.1c11326
Примечания
: Cited References: 51. - We are grateful to Prof. Chun-Ting Lin and Prof. Chien-Chung Lin for helpful discussions. This work was supported by the Higher Education Sprout Project of the National Yang Ming Chiao Tung University and Ministry of Education and the Ministry of Science and Technology (MOST-111-2923-E-A49-001-MY3; 108-2923-E-009-003-MY3; 110-2224-E-009-002; 109-2628-E-009-007-MY3; 110-2221-E-A49-019-MY3). This research was also funded by the Russian Science Foundation (project no. 22-42-08003)
Аннотация:
In O-and C-band optical communications, Ge is a promising material for detecting optical signals that are encoded into electrical signals. Herein, we study 2D periodic Ge metasurfaces that support optically induced electric dipole and magnetic dipole lattice resonances. By overlapping Mie resonances and electric dipole lattice resonances, we realize the resonant lattice Kerker effect and achieve narrowband absorption. This effect was applied to the photodetector demonstrated in this study. The absorptance of the Ge nanoantenna arrays increased 6-fold compared to that of the unpatterned Ge films. In addition, the photocurrent in such Ge metasurface
photodetectors
increases by approximately 5 times compared with that in plane Ge film
photodetectors
by the interaction of these strong near-fields with semiconductors and the further transformation of the optical energy into electricity.
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3.
Вид документа
: Статья из журнала
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Автор(ы)
: Zhou J., Luo J., Rong X., Wei P., Molokeev M. S., Huang Y., Zhao J., Liu Q., Zhang X., Tang J., Xia Z.
Заглавие
: Lead-Free Perovskite Derivative Cs2SnCl6−xBrx Single Crystals for Narrowband
Photodetectors
Место публикации
: Adv. Opt. Mater. - 2019. - Vol. 7, Is. 10. - Ст.1900139. - ISSN 21951071 (ISSN),
DOI
10.1002/adom.201900139
Примечания
: Cited References: 26. - J.Z., J.J.L., X.M.R. contributed equally to this work. The present work was supported by the National Natural Science Foundation of China (Grants 51722202, 91622125, 51572023, and 11774239), Natural Science Foundations of Beijing (2172036), and National Key R&D Program of China (grant no. 2016YFB0700700).
Ключевые слова
(''Своб.индексиров.''): band structure--cs2snbr6--cs2sncl6--lead-free perovskite derivatives--narrowband photodetection
Аннотация:
Lead-free and stable Sn halide perovskites demonstrate tremendous potential in the field of optoelectronic devices. Here, the structure and optical properties of the “defect” perovskites Cs2SnCl6−xBrx are reported, as well as their use as photodetector materials. Millimeter‐sized Cs2SnCl6−xBrx single crystals are grown by the hydrothermal method, with the body color continuously changing from transparent to yellow and finally to dark red. Narrowband single‐crystal
photodetectors
using Cs2SnCl6−xBrx crystals are presented, which show a high detectivity of ≈2.71 × 1010 Jones, with narrowband photodetection (full‐width at half‐maximum ≈45 nm) and high ion diffusion barriers. Moreover, the response spectra are continuously tuned from near violet to orange depending on the variation of the bandgap of the single crystals by changing the halide compositions. The strong surface charge recombination of the excess carriers near the crystal surfaces produced by short wavelength light elucidates the narrowband photodetection behavior. This work provides a new paradigm in the design of lead‐free, stable, and high‐performance perovskite derivatives for optoelectronics applications.
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