Metal Deposition Selectivity Based on Photochromism of Diarylethene Film in Intermediate Vacuum

We report on metal deposition selectivity on a photochromic diarylethene (DAE) surface in intermediate vacuum. Selective deposition means that metal vapor is deposited on colored DAE but not on uncolored. Mg was evaporated on the DAE surfaces at various pressures with the introduction of inert gas. Mg was easy to deposit on the uncolored DAE surface in intermediate vacuum (2?10-1 Torr). The easy-deposition effect in intermediate vacuum was explained by the re-adsorption of Mg atoms desorbed from the DAE surface. Mg cathode patterning of an organic light emitting device on the basis of selective deposition in the intermediate vacuum was successfully demonstrated.