Please use this identifier to cite or link to this item: https://doi.org/10.1021/jp0534028
Title: Observation of interband two-photon absorption saturation in CdS nanocrystals
Authors: He, J. 
Mi, J.
Li, H. 
Ji, W. 
Issue Date: 20-Oct-2005
Citation: He, J., Mi, J., Li, H., Ji, W. (2005-10-20). Observation of interband two-photon absorption saturation in CdS nanocrystals. Journal of Physical Chemistry B 109 (41) : 19184-19187. ScholarBank@NUS Repository. https://doi.org/10.1021/jp0534028
Abstract: We report the observation of interband two-photon absorption (TPA) saturation in cadmium sulfide nanocrystals (CdS NCs) under intense femtosecond laser excitation with 1.6 eV photon energy. The observation has been compared to interband TPA saturation in bulk CdS under the same experimental conditions. By using both Z-scan techniques and transient absorption measurements, the saturation intensity has been determined to be 190 GW/cm2 for CdS NCs of 4-nm diameter, which is 2 orders of magnitude greater than that for CdS bulk crystal. The results are in agreement with an inhomogeneously broadened, saturated TPA model. © 2005 American Chemical Society.
Source Title: Journal of Physical Chemistry B
URI: http://scholarbank.nus.edu.sg/handle/10635/97405
ISSN: 15206106
DOI: 10.1021/jp0534028
Appears in Collections:Staff Publications

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