▎ 摘 要
NOVELTY - Device comprises anode, hole transport layer containing graphene oxide film, active layer, and cathode. USE - As device. ADVANTAGE - The device has excellent performance and suitable solution processable material. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) method for producing device; (2) hole transport layer (HTL); and (3) use of graphene oxide film as HTL.