Thermal analysis of Tris (8-hydroxyquinoline) aluminum

In this report. the thermal analysis of Tris (8-hydroxyquinoline) aluminum (Alq(3)) is presented. The thermal conductivity of Alq(3), in a temperature range between 300 and 523 K, was determined by measuring its thermal diffu sivity and specific heat. The thermal diffusivity measured by the laser fla sh method is found to decrease with temperature. The specific heat increase s with temperature without any trend of saturation until the highest temper ature (573 K) was investigated. The room temperature specific heat of Alq(3 ) is about 1.03 Jig per K and the value at 523 K is about 1.67 Jig per K. A very low thermal conductivity (room temperature) of Alq(3), 0.107 W/m per K, was determined. The thermal conductivity is found to increase with tempe rature within the investigated temperature range. The measured thermal cond uctivity was applied to the modeling of a heat spreading during a device op eration. (C) 2000 Elsevier Science S.A. All rights reserved.