Journal
NATURE PHOTONICS
Volume 12, Issue 10, Pages 601-+Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41566-018-0239-8
Keywords
-
Categories
Funding
- Defence Advanced Research Projects Agency [HR0011-16-1-0004]
- Australian Research Council [DP150103736, FT140100577]
- Innovation Fellowship from the Victorian Endowment for Science, Knowledge and Innovation (VESKI)
Ask authors/readers for more resources
Infrared photodetectors are currently subject to a rapidly expanding application space, with an increasing demand for compact, sensitive and inexpensive detectors. Despite continued advancement, technological factors limit the widespread usage of such detectors, specifically, the need for cooling and the high costs associated with processing of III-V/II-VI semiconductors. Here, black phosphorous (bP)/MoS2 heterojunction photodiodes are explored as mid-wave infrared (MWIR) detectors. Although previous studies have demonstrated photodiodes using bP, here we significantly improve the performance, showing that such devices can be competitive with conventional MWIR photodetectors. By optimizing the device structure and light management, we demonstrate a two-terminal device that achieves room-temperature external quantum efficiencies (eta(e)) of 35% and specific detectivities (D-star) as high as 1.1 x 10(10) cm Hz(1/2) W-1 in the MWIR region. Furthermore, by leveraging the anisotropic optical properties of bP we demonstrate the first bias-selectable polarization-resolved photodetector that operates without the need for external optics.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available