▎ 摘　　要

NOVELTY - An electrode (102) is formed (S101) on a substrate (101). An insulating layer is formed (S102) on electrode (102). Graphene oxide (105) is arranged (S103) at preset condition on the insulating layer, reduced (S104) by exposing to an atmosphere (A1) which reduces graphene oxide, and used as reduced material (106). An electrode (107) is formed (S105) connecting to the reduced material. The electroconductivity of the reduced material graphene oxide is evaluated by time-resolution microwave electroconductivity measuring method using electrodes (102) and (107). USE - Evaluation of electroconductivity of graphene oxide-reduced material used as electronic material. ADVANTAGE - The method enables effective evaluation of electroconductivity of graphene oxide reduced in even strong reduction atmosphere, by time-resolution microwave electroconductivity measuring method. DETAILED DESCRIPTION - An electrode (102) is formed on a substrate. An insulating layer is formed on electrode (102). Graphene oxide is arranged in an isolated state with electrode (102) on the insulating layer, reduced by exposing to an atmosphere (A1) which reduces graphene oxide, and used as reduced material. An electrode (107) is formed connecting to the reduced material. The insulating layer has resistance in the atmosphere (A1). The electroconductivity of the reduced material graphene oxide is evaluated by time-resolution microwave electroconductivity measuring method using electrodes (102) and (107). DESCRIPTION OF DRAWING(S) - The drawing shows the flowchart of evaluation of electroconductivity of graphene oxide-reduced material. (Drawing includes non-English language text) Substrate (101) Electrodes (102,107) Graphene oxide (105) Reduced material (106) Formation of electrode on substrate (S101) Formation of insulating layer (S102) Arrangement of graphene oxide (S103) Reduction of graphene oxide (S104) Formation of electrode (S105)