Person:
Graham,
Samuel
Graham,
Samuel
Permanent Link
Associated Organization(s)
Organizational Unit
ORCID
ArchiveSpace Name Record
Publication Search Results
Now showing
1 - 1 of 1
-
ItemThermal transport properties of thin films of small molecule organic semiconductors(Georgia Institute of Technology, 2005-12) Kim, Namsu ; Domercq, Benoit ; Yoo, SeungHyup ; Christensen, Adam ; Kippelen, Bernard ; Graham, SamuelA series of harmonic Joule-heating experiments have been employed to determine the thermal conductivities of thin films of pentacene, N,N -diphenyl−N,N -di 3-methylphenyl − 1,1 -biphenyl -4,4 -diamine, and tris 8-hydroquinolinato aluminum, three widely used organic semiconductors. Room-temperature thermal conductivity values of 0.51, 0.24, and 0.48 W/mK were measured for films of these three compounds, respectively. These values are over two orders of magnitude lower than those of inorganic semiconductors. While amorphous films were found to display only small thermal conductivity changes over the temperature range of 228–350 K, pentacene exhibited stronger variations that are typical of phonon-phonon scattering observed in polycrystalline semiconductors.