DOAJ Open Access 2025

Excitonic insulator powers room-temperature ultra-sensitive visible to terahertz detection

Yi Wu Wenjie Deng Yongzhe Zhang

Abstrak

Abstract Phase transitions induce significant changes in the electrical and photonic properties of materials. Ultra-sensitive photodetectors leveraging material phase transitions can be realized near the transition temperature. Photodetectors based on Ta2NiSe5, a room-temperature excitonic insulator phase transition material, exhibit exceptional performance from visible to terahertz frequencies. Specifically, in the terahertz range, the electronic bandwidth is 360 kHz, and the specific detectivity (D*) reaches 5.3 × 1011 cm·Hz1/2·W−1. The van der Waals heterostructure of Ta2NiSe5/WS2 further enhances performance.

Topik & Kata Kunci

Applied optics. Photonics Optics. Light

Penulis (3)

Yi Wu

Wenjie Deng

Yongzhe Zhang

Format Sitasi

APA MLA BibTeX

Wu, Y., Deng, W., Zhang, Y. (2025). Excitonic insulator powers room-temperature ultra-sensitive visible to terahertz detection. https://doi.org/10.1038/s41377-025-01828-8

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Informasi Jurnal

Tahun Terbit: 2025
Sumber Database: DOAJ
DOI: 10.1038/s41377-025-01828-8
Akses: Open Access ✓