Please use this identifier to cite or link to this item:
|Title:||Excitonic nonlinear absorption in CdS nanocrystals studied using Z-scan technique|
|Authors:||He, J. |
|Citation:||He, J., Ji, W., Ma, G.H., Tang, S.H., Elim, H.I., Sun, W.X., Zhang, Z.H., Chin, W.S. (2004-06-01). Excitonic nonlinear absorption in CdS nanocrystals studied using Z-scan technique. Journal of Applied Physics 95 (11 I) : 6381-6386. ScholarBank@NUS Repository. https://doi.org/10.1063/1.1711183|
|Abstract:||The wavelength and irradiance dependence of excitonic nonlinear absorption in cadmium sulfide (CdS) nanocrystals (NC) were investigated. The dependence was analyzed by using Z-scan method with nanosecond laser pulses. The intrinsic excitonic nonlinear absorption was described using a two-level model. It was observed that the nonlinear absorption was increased when the particle size was less than the bulk Bohr diameter due to the quantum confinement effect. A third-order excitonic bleaching at low irradiance and fifth-order excitonic nonlinear absorption at higher irradiance were observed for both 3.0-nm-sized and 2.3-nm-sized CdS NCs.|
|Source Title:||Journal of Applied Physics|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Oct 15, 2018
WEB OF SCIENCETM
checked on Oct 8, 2018
checked on Oct 20, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.