Transient absorption studies on photothermal energy transfer and heat dissipation: Phthalocyanine-based thin films on Bi, Al-substituted DyIG substrates

Abstract In this study, we have investigated the photothermal-energy-transfer-based temperature rise in a ferrimagnetic Bi 0.8 Dy 2.2 Fe 4.3 Al 0.7 O 12 thin film, followed by heat-dissipation-based temperature lowering. A novel method using nanosecond transient absorption spectroscopy is proposed for observing the photothermal energy transfer and heat dissipation. This approach would be useful for developing various types of photofunctional organic-inorganic hybrid materials.