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Single InAs Nanowire Room-Temperature Near-Infrared Photodetectors
Abstract
Here we report InAs nanowire (NW) near-infrared photodetectors having a detection wavelength up to ∼1.5 μm. The single InAs NW photodetectors displayed minimum hysteresis with a high Ion/Ioff ratio of 10(5). At room temperature, the Schottky-Ohmic contacted photodetectors had an external photoresponsivity of ∼5.3 × 10(3) AW(-1), which is ∼300% larger than that of Ohmic-Ohmic contacted detectors (∼1.9 × 10(3) AW(-1)). A large enhancement in photoresponsivity (∼300%) had also been achieved in metal Au-cluster-decorated InAs NW photodetectors due to the formation of Schottky junctions at the InAs/Au cluster contacts. The photocurrent decreased when the photodetectors were exposed to ambient atmosphere because of the high surface electron concentration and rich surface defect states in InAs NWs. A theoretical model based on charge transfer and energy band change is proposed to explain this observed performance. To suppress the negative effects of surface defect states and atmospheric molecules, new InAs NW photodetectors with a half-wrapped top-gate had been fabricated by using 10 nm HfO2 as the top-gate dielectric.
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Cites
Growth of nanowire superlattice structures for nanoscale photonics and electronics
Gudiksen, M. S., Lauhon, L. J., Wang, J., Smith, D. C., & Lieber, C. M. (2002) · Nature · doi:10.1038/415617a · Cited by 2,709
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Photogating in Low Dimensional Photodetectors
Fang, H., & Hu, W. (2017) · Advanced Science · doi:10.1002/advs.201700323 · Cited by 986
Self-citationTyagi, D., Wang, H., Huang, W., Hu, L., Tang, Y., Guo, Z., Ouyang, Z., & Zhang, H. (2020) · Nanoscale · doi:10.1039/c9nr10178k · Cited by 508
Synthesis and Applications of III–V Nanowires
Barrigón, E., Heurlin, M., Bi, Z., Monemar, B., & Samuelson, L. (2019) · Chemical Reviews · doi:10.1021/acs.chemrev.9b00075 · Cited by 328
Metadata
- Authors
- Miao, J., Hu, W., Guo, N., Lu, Z., Zou, X., Liao, L., Shi, S., Chen, P., Fan, Z., Ho, J. C., Li, T.-X., Chen, X. S., & Lu, W.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2014-03-07
- Volume
- 8
- Issue
- 4
- Pages
- 3628-3635
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W2313078544
- Cited by
- 267
- References
- 1
- FWCI
- 17.71
- Type
- journal article
- Language
- en
- Open access
- closed
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- Miao, J., Hu, W., Guo, N., Lu, Z., Zou, X., Liao, L., Shi, S., Chen, P., Fan, Z., Ho, J. C., Li, T.-X., Chen, X. S., & Lu, W. (2014). Single InAs Nanowire Room-Temperature Near-Infrared Photodetectors. ACS Nano. https://doi.org/10.1021/nn500201g
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