| Autor: |
Hess, Bret, Forgy, Eric, Frolov, Sergey, Dick, David, Vardeny, Zeev |
| Zdroj: |
Molecular Crystals and Liquid Crystals; November 1994, Vol. 256 Issue: 1 p775-782, 8p |
| Abstrakt: |
We have studied the singlet exciton decay by picosecond photoinduced absorption (PA) in films of C60, under pressures up to 62 kbar. When excited at 2 eV, the exciton lifetime distribution broadens with pressure. A similar broadening occurs when changing the exciting wavelength at ambient pressure. This suggests that the lifetimes of the lowest-energy excitons do not depend upon hopping or tunneling between C60 molecules. We see no evidence in the dynamics of the lowest energy excitons for the evolution of extended states or bands with pressure up to 60 kbar, even though we excite states well above the absorption edge. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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