Carrier Injection/Transport Characteristics of Photochromic Diarylethene Film

Photochromic diarylethenes with electric carrier (hole) controlling ability for nondestructive readout were investigated. The ionization potential of the photostationary colored diarylethene films was around 5.7–5.8 eV, irrespective of differences in their molecular structures. Good hole injection/transport characteristics were observed for the colored films of diarylethenes with triphenylamine groups.