A 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.
展开▼
机译：已采用一系列谐波焦耳加热实验来确定并五苯，N，N'-联苯-N，N'-二（3-甲基苯基）-（1,1'-联苯）-的薄膜的热导率4,4'-二胺和三（8-氢喹啉基）铝，三种广泛使用的有机半导体。对这三种化合物的薄膜测得的室温导热系数分别为0.51、0.24和0.48 W / mK。这些值比无机半导体的值低两个数量级以上。虽然发现非晶膜在228-350 K的温度范围内仅显示出很小的热导率变化，但并五苯显示出更强的变化，这是在多晶半导体中观察到的声子-声子散射的典型特征。
展开▼
