NANOPARTICLE CONTAINING TRANSITION METAL COMPOUND AND PROCESS FOR PRODUCTION THEREOF, INK HAVING NANOPARTICLES EACH CONTAINING TRANSITION METAL COMPOUND DISPERSED THEREIN AND PROCESS FOR PRODUCTION THEREOF, AND DEVICE EQUIPPED WITH HOLE-INJECTION/TRANSPORT LAYER AND PROCESS FOR PRODUCTION THEREOF

摘要

Provided is a novel nanoparticle containing a metal compound, which can be dispersed in a solvent stably. A nanoparticle containing a transition metal compound, which is characterized by being composed of at least one transition metal compound selected from the group consisting of a transition metal oxycarbide, a transition metal oxynitride and a transition metal oxysulfide and a protective agent having a hydrophilic-group-containing organic group and linked to the transition metal compound through a linking group, and is also characterized by being dispersible in a hydrophilic solvent.