▎ 摘　　要

A simple method for the preparation of patterned graphene electrodes by applying patterned copper film as the masking layer is demonstrated. As-prepared graphene pattern shows well-defined and straight boundary line. High-quality patterned graphene electrode possesses a low average sheet resistance of 556 Omega/sq meanwhile its transmittance exceeds 96% at 550 nm. The 4 x 2 organic light-emitting diodes array with patterned graphene electrode further proves the practical application of this simple patterned technology. Corresponding device exhibits a maximum luminance of 44 k cd/m(2) at 15 V and current efficiency of 24 cd/A at 6 V. This patterned graphene electrodes also have great potential in application of flexible printed electronics and display. (C) 2019 Elsevier B.V. All rights reserved.