Ultralow surface recombination velocity in InP nanowires probed by terahertz spectroscopy
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Joyce, Hannah J; Wong-Leung, Jennifer; Yong, Chaw Keong; Docherty, Callum J.; Paiman, Suriati; Gao, Qiang; Jagadish, Chennupati; Lloyd-Hughes, J; Herz, Laura; Johnston, Michael B; Tan, Hark Hoe
Description
Using transient terahertz photoconductivity measurements, we have made noncontact, room temperature measurements of the ultrafast charge carrier dynamics in InP nanowires. InP nanowires exhibited a very long photoconductivity lifetime of over 1 ns, and carrier lifetimes were remarkably insensitive to surface states despite the large nanowire surface area-to-volume ratio. An exceptionally low surface recombination velocity (170 cm/s) was recorded at room temperature. These results suggest that...[Show more]
Collections | ANU Research Publications |
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Date published: | 2012 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/67359 |
Source: | Nano Letters |
DOI: | 10.1021/nl3026828 |
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01_Joyce_Ultralow_surface_recombination_2012.pdf | 2.1 MB | Adobe PDF | Request a copy |
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