951. Miniaturized Spectrometers with a Tunable van der Waals Junction
- Author
-
Hoon Hahn Yoon, Henry A. Fernandez, Fedor Nigmatulin, Weiwei Cai, Zongyin Yang, Hanxiao Cui, Faisal Ahmed, Xiaoqi Cui, Md Gius Uddin, Ethan D. Minot, Harri Lipsanen, Kwanpyo Kim, Pertti Hakonen, Tawfique Hasan, Zhipei Sun, Hasan, Tawfique [0000-0002-6250-7582], Apollo - University of Cambridge Repository, Zhipei Sun Group, Centre of Excellence in Quantum Technology, QTF, Department of Electronics and Nanoengineering, Shanghai Jiao Tong University, Zhejiang University, Sichuan University, Oregon State University, Yonsei University, University of Cambridge, Department of Applied Physics, Aalto-yliopisto, and Aalto University
- Subjects
Phototransistors ,Wavelength ,Intelligence ,Integration ,Broadband ,Spectral analysis ,Single junction ,Compatibility ,Spectrometer ,Spectral imager ,Imaging ,Bandwidth ,High performance ,Monochromatic ,Photocurrent ,Optoelectronics ,Photodiodes ,Spectroscopy ,Accuracy ,Multidisciplinary ,Miniaturization ,Computational ,Sensors ,Photodetectors ,Scalability ,Transition metal ,Detectors ,Artificial intellegence ,Pixel detector ,Lab on a chip ,2D materials ,Photogating ,Hexagonal boron nitride ,Algorithm ,Photonics ,Dark current ,Heterojunctions ,Ultimate ,Pixel ,Reconstruction ,Resolution ,Graphene ,Photovoltaic - Abstract
Miniaturized computational spectrometers, which can obtain incident spectra using a combination of device spectral response 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 (~0.36 nanometers), high spectral resolution (~3 nanometers), broad operation bandwidth (from ~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., EP/T014601/1