Femtosecond emission studies on gold nanoparticles

Young Nam Hwang, Dae Hong Jeong, Hyun Jong Shin, Dongho Kim, Sae Chae Jeoung, Seon Hee Han, Jae Suk Lee, Gyoujin Cho

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


We report the light emission decay in bare gold nanoparticles by using the fluorescence up-conversion technique. The emission decay, of which the time constants increase consistently with excitation intensity, closely follows the electron thermalization dynamics, which has been independently observed from the bleach recovery of the surface plasmon band under the identical experimental conditions. These results indicate that a weak light emission from relatively large gold nanoparticles is attributable to the interactions between Surface plasmons and incident photons, which occur simultaneously with the thermal electron relaxation.

Original languageEnglish
Pages (from-to)7581-7584
Number of pages4
JournalJournal of Physical Chemistry B
Issue number31
Publication statusPublished - 2002 Aug 8

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry


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