Selective metal deposition on photosensitive organic crystal surfaces

Abstract

In organic electronics, organic crystals are essential materials, and metal deposition on organic surfaces is an important process. We report light-controlled metal deposition on photosensitive organic crystals. Light irradiation to the photosensitive diarylethene (DAE) crystal surface generated another isomer in the crystal lattice and made the surface soft, which caused the Mg-undeposition effect. The light-controlled selective Mg deposition can be applied to fine metal patterning by laser scanning and maskless evaporation. Fine parallel and grid Mg patterning on the DAE crystal surface are demonstrated successfully. This method is promising for fine electrode patterning of various electronics devices with an organic crystal.