Photoacoustic in Situ Measurement of Quantum Efficiencies for Photoanodic Reactions at n-Type Semiconductor Electrodes

Abstract
The time required for the in situ measurement of quantum efficiencies during photoelectrochemical reactions is qreatly reduced by the photoacoustic spectroscopy (PAS) employing a piezoelectric transducer (PZT). PAS has been successfully applied for several reactions at TiO2, ZnO, and CdS photoelectrodes and compared with previous studies by the photothermal spectroscopy (PTS).