Zero-bias mid-infrared graphene photodetectors with bulk photoresponse and calibration-free polarization detection

Jingxuan Wei, Ying Li, Lin Wang, Wugang Liao, Bowei Dong, Cheng Xu, Chunxiang Zhu, Kah-Wee Ang, Cheng-Wei Qiu () and Chengkuo Lee ()
Additional contact information
Jingxuan Wei: National University of Singapore
Ying Li: College of Information Science and Electronic Engineering, Zhejiang University
Lin Wang: National University of Singapore
Wugang Liao: National University of Singapore
Bowei Dong: National University of Singapore
Cheng Xu: National University of Singapore
Chunxiang Zhu: National University of Singapore
Kah-Wee Ang: National University of Singapore
Cheng-Wei Qiu: National University of Singapore
Chengkuo Lee: National University of Singapore

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract Bulk photovoltaic effect (BPVE), featuring polarization-dependent uniform photoresponse at zero external bias, holds potential for exceeding the Shockley-Queisser limit in the efficiency of existing opto-electronic devices. However, the implementation of BPVE has been limited to the naturally existing materials with broken inversion symmetry, such as ferroelectrics, which suffer low efficiencies. Here, we propose metasurface-mediated graphene photodetectors with cascaded polarization-sensitive photoresponse under uniform illumination, mimicking an artificial BPVE. With the assistance of non-centrosymmetric metallic nanoantennas, the hot photocarriers in graphene gain a momentum upon their excitation and form a shift current which is nonlocal and directional. Thereafter, we demonstrate zero-bias uncooled mid-infrared photodetectors with three orders higher responsivity than conventional BPVE and a noise equivalent power of 0.12 nW Hz−1/2. Besides, we observe a vectorial photoresponse which allows us to detect the polarization angle of incident light with a single device. Our strategy opens up alternative possibilities for scalable, low-cost, multifunctional infrared photodetectors.

Date: 2020
References: Add references at CitEc
Citations: View citations in EconPapers (11)

Downloads: (external link)
https://www.nature.com/articles/s41467-020-20115-1 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-20115-1

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-020-20115-1

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().