Size-dependence of the anharmonicities in the vibrational potential of colloidal CdSe nanocrystals

作者：Kusch Patryk^*; Lange Holger; Artemyev Mikhail; Thomsen Christian

来源：Solid State Communications, 2011, 151(1): 67-70.

DOI：10.1016/j.ssc.2010.10.023

• Colloidal semiconductor nanocrystals
• Phonons
• Temperature dependence
• Raman scattering

We investigated multi-phonon processes in two types of CdSe nanocrystals spherical quantum dots and nanorods by temperature-dependent Raman spectroscopy We find the anharmonic constants relating to the two- and three-phonon decay channels to systematically change with changing nanocrystal size The contributions from two-phonon processes decrease with decreasing diameter while the contributions from

• 出版日期2011-1