@article{Gu2026, 
author = {Hao Gu and Suifeng Xiong and Zhongyang Yu and Futing Sun and Chao Guo and Jingyu Zhang and Wen Chen and Yunluo Wang and Zesen Gao and Haoxuan Li and Xinyue Zhao and Xiaohan Zhang and Qirui Sun and Lili Yang and Yongzhe Wang and He Zhu and Yufeng Shan and Haijie Chen and Ning Dai},
title = {Semimetallic Nb/Ta-Te phases with charge density wave for mid- and long-wave infrared detection},
year = {2026},
journal = {Nano Research},
volume = {19},
number = {7},
pages = {94908526},
keywords = {artificial intelligence, charge density wave (CDW), broadband photodetectors, Nb/Ta-Te binary systems},
url = {https://www.sciopen.com/article/10.26599/NR.2026.94908526},
doi = {10.26599/NR.2026.94908526},
abstract = {Charge density wave (CDW), which typically opens a narrow energy gap near the Fermi level, is highly sensitive to low-energy photon excitations, providing a compelling basis for infrared detectors. Here, we systematically investigated one-dimensional (1D) NbTe4 and TaTe4, as well as two-dimensional (2D) NbTe2 and TaTe2, from the binary Nb/Ta-Te systems for mid- and long-wave infrared detection. They all exhibit notable infrared photoresponse under zero-bias (self-powered) operation governed by the photothermoelectric effect. NbTe2, in particular, achieves detectivities of 1.64 × 108 and 1.29 × 108 Jones under illumination of 4 and 8.47 μm infrared lights, respectively. Using artificial intelligence, super-resolution reconstruction was realized to enhance images obtained from photodetector-based single-pixel imaging, laying an important foundation for computing-in-memory integration. This work highlights Nb/Ta-Te phases as promising candidates for infrared detectors, paving the way for next-generation room-temperature, low-power intelligent infrared optoelectronic systems.}
}