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High-detectivity tin disulfide nanowire photodetectors with manipulation of localized ferroelectric polarization field
- Source :
- Nanophotonics, Vol 10, Iss 18, Pp 4637-4644 (2021)
- Publication Year :
- 2021
- Publisher :
- De Gruyter, 2021.
-
Abstract
- Tin sulfide semiconductor nanowires (NWs) have been widely investigated for photodetection applications because of their good optical and electrical properties. Herein, we synthesized n-type SnS2 NWs and then fabricated SnS2 NW photodetectors with a ferroelectric polymer side-gate. The strong electric field induced by ferroelectric polymer can effectively suppress the dark current and improve the detectivity in SnS2 NW photodetectors. The photodetectors after polarization depletion exhibit a high photoconductive gain of 4.0 × 105 and a high responsivity of 2.1 × 105 A W−1. Compared with devices without polarization depletion, the detectivity of polarization-depleted photodetectors is improved by at least two orders of magnitude, and the highest detectivity is 1.3 × 1016 Jones. Further, the rise and fall time are 56 and 91 ms respectively, which are about tens of times faster than those without polarization depletion. The device also shows a good spectral response from ultraviolet to near-infrared. This study demonstrates that ferroelectric materials can enhance optoelectronic properties of low-dimensional semiconductors for high-performance photodetectors.
- Subjects :
- Materials science
Field (physics)
business.industry
sns2
Physics
QC1-999
Nanowire
Disulfide bond
chemistry.chemical_element
Photodetector
Ferroelectricity
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
chemistry
nanowire
Optoelectronics
ferroelectric
Electrical and Electronic Engineering
photodetector
Polarization (electrochemistry)
Tin
business
Biotechnology
Subjects
Details
- Language :
- English
- ISSN :
- 21928614
- Volume :
- 10
- Issue :
- 18
- Database :
- OpenAIRE
- Journal :
- Nanophotonics
- Accession number :
- edsair.doi.dedup.....0c9a546bccd00f79e10315e45ad31811