The photoexcited states in single crystals of functionalized forms of penatcene were analyzed. It was observed that relaxation rate of such forms is thermally activated, which was determined from time-and temperature-dependent measurements of photoconductivity after illumination. The thermally stimulated current (TSC) was observed in dark current with an increasing temperature, after low-temperature illumination. The TSC behavior indicates that carrier associated with photoexcited states are thermally activated at low temperatures, with an energy less than both intrinsic band-gap and trap energy. The results show that TSC signal allows estimation of energies associated with excited states.
|Number of pages||7|
|Journal||Journal of Applied Physics|
|State||Published - Sep 15 2004|
ASJC Scopus subject areas
- Physics and Astronomy (all)