Open AccessTerahertz Photon Detection: Sensitive Terahertz Detection and Imaging Driven by the Photothermoelectric Effect in Ultrashort‐Channel Black Phosphorus Devices (Adv. Sci. 5/2020)
Author(s) -
Guo Wanlong,
Dong Zhuo,
Xu Yijun,
Liu Changlong,
Wei Dacheng,
Zhang Libo,
Shi Xinyao,
Guo Cheng,
Xu Huang,
Chen Gang,
Wang Lin,
Zhang Kai,
Chen Xiaoshuang,
Lu Wei
Publication year - 2020
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.202070029
Subject(s) - terahertz radiation , broadband , detector , optoelectronics , optics , absorption (acoustics) , black phosphorus , photon , physics , materials science
In article number 1902699, Lin Wang, Kai Zhang, Xiaoshuang Chen, and co‐workers boost the photothermoelectric effect (PTE) through ultrashort channel design via a titled‐angle evaporation technique. Such a detector exhibits tremendous field‐enhancement as well as high efficiency terahertz photon absorption across a broadband frequency range beyond the skin depth limit, introducing an avenue for deeply understanding the role of the PTE effect and its targeted applications for fast imaging.