Please use this identifier to cite or link to this item:
|Title:||Defect engineering in CdSxSe1-x nanobelts: An insight into carrier relaxation dynamics via optical pump-terahertz probe spectroscopy||Authors:||Liu, H.
|Issue Date:||13-Dec-2012||Citation:||Liu, H., Lu, J., Teoh, H.F., Li, D., Feng, Y.P., Tang, S.H., Sow, C.H., Zhang, X. (2012-12-13). Defect engineering in CdSxSe1-x nanobelts: An insight into carrier relaxation dynamics via optical pump-terahertz probe spectroscopy. Journal of Physical Chemistry C 116 (49) : 26036-26042. ScholarBank@NUS Repository. https://doi.org/10.1021/jp307864d||Abstract:||Defects in nanomaterials often induce dramatic changes in the photoelectrical properties of semiconducting II-VI compound nanomaterials. The relationship between defects and carrier dynamics is pivotal in material engineering for potential applications. A thorough understanding of the dynamics of defect-related free carrier depletion is particularly important for the fabrication and optimization of nano-optoelectronic devices. In this work, optical pump-terahertz probe spectroscopy was employed to investigate the carrier dynamics in CdS and Se-alloyed CdS nanobelts. The dynamics are dominated by the surface defect trapping in the case of CdS and structural-defect-related recombination for the Se-alloyed CdS. The conclusion is also supported by temperature-dependent photoluminescence spectroscopic studies. Our results indicate that congeneric element replacement is an effective approach for defect-distribution restructuring, which modifies the physical properties of nanomaterials through defect engineering. © 2012 American Chemical Society.||Source Title:||Journal of Physical Chemistry C||URI:||http://scholarbank.nus.edu.sg/handle/10635/96154||ISSN:||19327447||DOI:||10.1021/jp307864d|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Aug 13, 2019
WEB OF SCIENCETM
checked on Aug 6, 2019
checked on Aug 17, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.