X-RAY PHOTOACOUSTIC-SPECTROSCOPY OF ZNO THIN-FILM

The hard X-ray photoacoustic spectrum of ZnO thin film has been obtain ed in the EXAFS (extended X-ray absorption fine structure) region usin g synchrotron radiation. It is shown that information on EXAFS is incl uded in the X-ray photoacoustic signal intensity and phase spectra whi ch reflect the heat production processes in ZnO thin film. However, th e results showed that the increases and changes in the photoacoustic s ignal intensity were different from those of the photoacoustic signal phase in the EXAFS region.