Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/94940
Title: Size and surface effects on transient photoconductivity in CdS nanobelts probed by time-resolved terahertz spectroscopy
Authors: Li, Mingjie
Wu, Bo
Ekahana, Sandy Adhitia
Utama, Muhammad Iqbal Bakti
Xing, Guichuan
Xiong, Qihua
Sum, Tze Chien
Zhang, Xinhai
Issue Date: 2012
Source: Li, M., Wu, B., Ekahana, S. A., Utama, M. I. B., Xing, G., Xiong, Q., et al. (2012). Size and surface effects on transient photoconductivity in CdS nanobelts probed by time-resolved terahertz spectroscopy. Applied Physics Letters, 101(9).
Series/Report no.: Applied Physics Letters
Abstract: Ultrafast optical-pump terahertz probe spectroscopy was performed over a graduated size distribution of CdS nanobelts to investigate the size and surface effects on the transient photoconductivity. It was found that the nanobelt size has a profound influence on the carrier localization and photoconductivity dynamics, brought about by the carrier trapping at surface defects. The strong carrier localization in the nanobelt is ascribed to the internal surface boundaries arising from the surface depletion layer. The increased thickness of surface depletion layer due to a continuous trapping of photocarriers at surface defects results in more pronounced carrier localization after photoexcitation.
URI: https://hdl.handle.net/10356/94940
http://hdl.handle.net/10220/9223
ISSN: 0003-6951
DOI: 10.1063/1.4748300
Rights: © 2012 American Institute of Physics. This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. The paper can be found at the following official DOI: [http://dx.doi.org/10.1063/1.4748300]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
SPMS Journal Articles

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