DOI: 10.1002/smll.201400373. Thermally Phase‐Transformed In<sub>2</sub>Se<sub>3</sub> Nanowires for Highly Sensitive Photodetectors

Thermally Phase‐Transformed In2Se3 Nanowires for Highly Sensitive Photodetectors

10.1002/smll.201400373

Crossref journal-article

Wiley

Small (311)

Abstract

The photoresponse characteristics of In2Se3 nanowire photodetectors with the κ‐phase and α‐phase structures are investigated. The as‐grown κ‐phase In2Se3 nanowires by the vapor‐liquid‐solid technique are phase‐transformed to the α‐phase nanowires by thermal annealing. The photoresponse performances of the κ‐phase and α‐phase In2Se3 nanowire photodetectors are characterized over a wide range of wavelengths (300–900 nm). The phase of the nanowires is analyzed using a high‐resolution transmission microscopy equipped with energy dispersive X‐ray spectroscopy and X‐ray diffraction. The electrical conductivity and photoresponse characteristics are significantly enhanced in the α‐phase due to smaller bandgap structure compared to the κ‐phase nanowires. The spectral responsivities of the α‐phase devices are 200 times larger than those of the κ‐phase devices. The superior performance of the thermally phase‐transformed In2Se3 nanowire devices offers an avenue to develop highly sensitive photodetector applications.

Bibliography

Kang, D., Rim, T., Baek, C., Meyyappan, M., & Lee, J. (2014). Thermally PhaseâTransformed In2Se3 Nanowires for Highly Sensitive Photodetectors. Small, 10(18), 3795â3802. Portico.

Authors 5

Daegun Kang (first)
Taiuk Rim (additional)
Chang‐Ki Baek (additional)
M. Meyyappan (additional)
Jeong‐Soo Lee (additional)

References 47 Referenced 40

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Dates

Type	When
Created	11 years, 3 months ago (May 15, 2014, 5:37 a.m.)
Deposited	1 year, 9 months ago (Oct. 27, 2023, 7:41 p.m.)
Indexed	1 year, 4 months ago (April 6, 2024, 8:35 a.m.)
Issued	11 years, 3 months ago (May 15, 2014)
Published	11 years, 3 months ago (May 15, 2014)
Published Online	11 years, 3 months ago (May 15, 2014)
Published Print	10 years, 11 months ago (Sept. 1, 2014)

Funders 0

None

BibTeX

@article{Kang_2014, title={Thermally Phase‐Transformed In2Se3 Nanowires for Highly Sensitive Photodetectors}, volume={10}, ISSN={1613-6829}, url={http://dx.doi.org/10.1002/smll.201400373}, DOI={10.1002/smll.201400373}, number={18}, journal={Small}, publisher={Wiley}, author={Kang, Daegun and Rim, Taiuk and Baek, Chang‐Ki and Meyyappan, M. and Lee, Jeong‐Soo}, year={2014}, month=may, pages={3795–3802} }

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