Electrical transport properties of an isolated CdS microrope composed of twisted nanowires.
NANOSCALE RESEARCH LETTERS 2015;
10:21. [PMID:
25852319 PMCID:
PMC4314464 DOI:
10.1186/s11671-015-0734-5]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 01/05/2015] [Indexed: 06/04/2023]
Abstract
CdS is one of the important II-VI group semiconductors. In this paper, the electrical transport behavior of an individual CdS microrope composed of twisted nanowires is studied. It is found that the current-voltage (I-V) characteristics show two distinct power law regions from 360 down to 60 K. Space-charge-limited current (SCLC) theory is used to explain these temperature- and electric-field-dependent I-V curves. The I-V data can be well fitted by this theory above 100 K, and the corresponding carrier mobility, trap energy, and trap concentration are also obtained. However, the I-V data exhibit some features of the Coulomb blockade effect below 80 K.
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