Miniaturized spectrometers with a tunable van der Waals junction

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2022-10-21
Major/Subject
Mcode
Degree programme
Language
en
Pages
4
296-299
Series
Science, Volume 378, issue 6617
Abstract
Miniaturized computational spectrometers, which can obtain incident spectra using a combination of device spectral responses and reconstruction algorithms, are essential for on-chip and implantable applications. Highly sensitive spectral measurement using a single detector allows the footprints of such spectrometers to be scaled down while achieving spectral resolution approaching that of benchtop systems. We report a high-performance computational spectrometer based on a single van der Waals junction with an electrically tunable transport-mediated spectral response. We achieve high peak wavelength accuracy (similar to 0.36 nanometers), high spectral resolution (similar to 3 nanometers), broad operation bandwidth (from similar to 405 to 845 nanometers), and proof-of-concept spectral imaging. Our approach provides a route toward ultraminiaturization and offers unprecedented performance in accuracy, resolution, and operation bandwidth for single-detector computational spectrometers.
Description
| openaire: EC/H2020/834742/EU//ATOP
Keywords
Heterojunctions, Spectrometer, Spectroscopy, Optoelectronics, Photonics, 2D materials, Transition metal, Artificial intellegence, Intelligence, Reconstruction, Wavelength, Accuracy, Resolution, Bandwidth, Broadband, Monochromatic, Sensors, Detectors, Graphene, Hexagonal boron nitride, Photocurrent, Dark current, Photodetectors, Phototransistors, Photodiodes, Photovoltaic, Photogating, High performance, Imaging, Pixel, Pixel detector, Single junction, Ultimate, Algorithm, Computational, Miniaturization, Spectral imager, Spectral analysis, Integration, Scalability, Compatibility, Lab on a chip
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Citation
Yoon, H H, Fernandez, H A, Nigmatulin, F, Cai, W, Yang, Z, Cui, H, Ahmed, F, Cui, X, Uddin, M G, Minot, E D, Lipsanen, H, Kim, K, Hakonen, P, Hasan, T & Sun, Z 2022, ' Miniaturized spectrometers with a tunable van der Waals junction ', Science, vol. 378, no. 6617, pp. 396-399 . https://doi.org/10.1126/science.add8544