Broadband miniaturized spectrometers with a van der Waals tunnel diode

Md Gius Uddin, Susobhan Das, Abde Mayeen Shafi, Lei Wang, Xiaoqi Cui, Fedor Nigmatulin, Faisal Ahmed, Andreas C. Liapis, Weiwei Cai, Zongyin Yang, Harri Lipsanen, Tawfique Hasan, Hoon Hahn Yoon, Zhipei Sun*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)
23 Downloads (Pure)

Abstract

Miniaturized spectrometers are of immense interest for various on-chip and implantable photonic and optoelectronic applications. State-of-the-art conventional spectrometer designs rely heavily on bulky dispersive components (such as gratings, photodetector arrays, and interferometric optics) to capture different input spectral components that increase their integration complexity. Here, we report a high-performance broadband spectrometer based on a simple and compact van der Waals heterostructure diode, leveraging a careful selection of active van der Waals materials- molybdenum disulfide and black phosphorus, their electrically tunable photoresponse, and advanced computational algorithms for spectral reconstruction. We achieve remarkably high peak wavelength accuracy of ~2 nanometers, and broad operation bandwidth spanning from ~500 to 1600 nanometers in a device with a ~ 30×20 μm2 footprint. This diode-based spectrometer scheme with broadband operation offers an attractive pathway for various applications, such as sensing, surveillance and spectral imaging.

Original languageEnglish
Article number571
JournalNature Communications
Volume15
Issue number1
DOIs
Publication statusPublished - 17 Jan 2024
MoE publication typeA1 Journal article-refereed

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