Waveguide-integrated black phosphorus photodetector with high responsivity and low dark current
By N. Youngblood, Che Chen, Steven J. Koester, Mo Li. Nature Photonics, 2014
873 citations recorded by the source corpus.
Layered two-dimensional materials have demonstrated novel optoelectronic properties and are well suited for integration in planar photonic circuits. Graphene, for example, has been utilized for wideband photodetection. However, because graphene lacks a bandgap, graphene photodetectors suffer from very high dark current. In contrast, layered black phosphorous, the latest addition to the family of two-dimensional materials, is ideal for photodetector applications due to its narrow but finite bandgap. Here, we demonstrate a gated multilayer black phosphorus photodetector integrated on a silicon photonic waveguide operating in the near-infrared telecom band. In a significant advantage over graphene devices, black phosphorus photodetectors can operate under bias with very low dark current and attain an intrinsic responsivity up to 135 mA W−1 and 657 mA W−1 in 11.5-nm- and 100-nm-thick devices, respectively, at room temperature. The photocurrent is dominated by the photovoltaic effect with a high response bandwidth exceeding 3 GHz. A gated multilayer black phosphorus photodetector integrated on a silicon photonic waveguide operating in the telecom band is demonstrated with intrinsic responsivity up to 135 mA W−1 and 657 mA W−1 in 11.5-nm- and 100-nm-thick devices, respectively.
Subfields: Electrical and Electronic Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/9ec2d8c83f1e19b56aa9ebd9c6dca8ef06d04c33
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Electrical and Electronic Engineering
- Gang Zhang
- Yong‐Wei Zhang
- Yongqing Cai
- Z. Ong
- V. Sorkin
- Volker J. Sorger
- Lionel C. Kimerling
- Xingzhu Chen
In Materials Chemistry
Citations in the corpus
- Graphene synthesis, characterization and its applications in nanophotonics, nanoelectronics, and nanosensing (2015, background): “MoS2, WS2, black phosphorous may take a more important role in future photodetection with high responsivity [161, 162].”
- The rising star of 2D black phosphorus beyond graphene: synthesis, properties and electronic applications (2017, background): “On the other hand, photobolometric effect is another thermal related photocurrent generation mechanism suggested to be dominant in the high doping regime of photodetectors [131, 132].”