[摘要]：Light-induced off-diagonal thermoelectric (ODTE) effect has been investigated in CaxCoO2 thin film coupled with a gold black light absorption layer. Increased light absorption at the gold black layer resulted in considerable enhancement of the steady-state thermoelectric voltage from the CaxCoO(2) film upon continuous light heating. However, we found that the indirect optical heating process highly deteriorates the input thermal energy pulse in time-domain, and leads to significant reduction in the transient voltage generated upon pulsed light heating. The result manifests the importance of adequate thermal design of absorption layers for fabrication of light detection devices based on the ODTE effect. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4711020]
