Application of subphthalocyanine thin films in high-density optical recording

Subphthalocyanine (SubPc) thin films exhibit attractive characteristics in high-density optical storage applications. We have realized red-light (632.8nm) recording on SubPc thin films previously. In this paper, novel subphthalocyanine thin films were developed by vacuum evaporation and spin-coating method. Their static and dynamic green-light (514.5nm) recording performance were studied using self-developed short-wavelength optical disk testers. Sufficient reflectivity, reflectivity contrast and CNR can also be obtained at 514.5nm if an appropriate multilayer structure was applied. It spread the dyes' traditional operating wavelength and provided a new clew for double-wave length (even double short-wavelength) recording/reading and choosing short-wavelength recording materials.