MICROSTRUCTURAL OBSERVATION OF ORGANIC THIN-FILM IN OPTICAL-RECORDING

The microstructure of recorded organic thin film in optical recording is observed using several methods, ie. optical microscopy (OM), scanni ng electron microscopy (SEM) and scanning tunneling microscopy (STM). From the microarea morphology images, it is found that bubbles are pro duced after laser irradiation of phthalocyanine film. The comparison b etween these methods indicates that STM can provide detailed three dim ensional parameters of the film adding to what can be obtained from OM and SEM. The investigation on the micostructure of thin film has been proved to be an important aid to analyze the disk performance.