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Photoconductive Cadmium Sulfide Hemicylindrical Shell Nanowire Ensembles
Abstract
We report the synthesis and characterization of hemicylindrical shell nanowires (HSNWs) composed of nanocrystalline cadmium sulfide (CdS). CdS HSNWs were synthesized by first electrodepositing microcrystalline cadmium (Cd) nanowires by electrochemical step-edge decoration on graphite electrode surfaces and then converting these Cd nanowires into CdS by exposure to H2S at elevated temperature. These nanowires had a hemicylindrical shell morphology that was produced by the Kirkendall effect, involving disparate rates for diffusion of Cd and S atoms within the nascent CdS layer during the conversion from Cd to CdS. The outer diameter of the CdS HSNWs was 1.6-2.4 times that of Cd precursor nanowires and was adjustable over the range from 116 to 550 nm. CdS HSNWs showed strong, band-edge photoluminescence at 2.45 eV and a fast, reversible, and stable photoconductivity response in air characterized by "on" and "off" times of less than 15 ms.
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Cited by
Synthesis, Properties, and Applications of Hollow Micro-/Nanostructures
Wang, X., Feng, J., Bai, Y., Zhang, Q., & Yin, Y. (2016) · Chemical Reviews · doi:10.1021/acs.chemrev.5b00731 · Cited by 1,456
Fan, H. J., Gösele, U., & Zacharias, M. (2007) · Small · doi:10.1002/smll.200700382 · Cited by 962
Semiconductor Nanowires: From Self‐Organization to Patterned Growth
Fan, H. J., Werner, P., & Zacharias, M. (2006) · Small · doi:10.1002/smll.200500495 · Cited by 759
Single‐Crystalline ZnS Nanobelts as Ultraviolet‐Light Sensors
Fang, X., Bando, Y., Liao, M., Gautam, U. K., Zhi, C., Dierre, B., Liu, B., Zhai, T., Sekiguchi, T., Koide, Y., et al. (2009) · Advanced Materials · doi:10.1002/adma.200802441 · Cited by 573
Fan, H. J., Knez, M., Scholz, R., Hesse, D., Nielsch, K., Zacharias, M., & Gösele, U. (2007) · Nano Letters · doi:10.1021/nl070026p · Cited by 401
Metadata
- Authors
- Li, Q., & Penner, R. M.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2005-08-06
- Volume
- 5
- Issue
- 9
- Pages
- 1720-1725
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2031746491
- Cited by
- 161
- References
- 0
- FWCI
- 5.24
- Type
- journal article
- Language
- en
- Open access
- closed
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