Display process compatible accurate graphene patterning for OLED applications. (13th December 2017)

• Record Type: Journal Article
• Authors: Shin, Jin-Wook; Han, Jun-Han; Cho, Hyunsu; Moon, Jaehyun; Kwon, Byoung-Hwa; Cho, Seungmin; Yoon, Taeshik; Kim, Taek-Soo; Suemitsu, Maki; Lee, Jeong-Ik; Cho, Nam Sung
• Is Part Of: 2D materials. Volume 5:Number 1(2018)
• Publication Date: 2017-12-13
• Subjects: graphene -- organic light emitting diode -- patterning -- liquid bridging -- integrated module; Graphene -- Periodicals; Materials science -- Periodicals; Nanostructured materials -- Periodicals; 620.115
• DOI: 10.1088/2053-1583/aa9cae
• Languages: English
• ISSNs: 2053-1583

Abstract

Abstract: Graphene film can be used as transparent electrodes in display and optoelectronic applications. However, achieving residue free graphene film pixel arrays with geometrical precision on large area has been a difficult challenge. By utilizing the liquid bridging concept, we realized photolithographic patterning of graphene film with dimensional correctness and absence of surface contaminant. On a glass substrate of 100 × 100 mm 2 size, we demonstrate our patterning method to fabricate an addressable two-color OLED module of which graphene film pixel size is 170 × 300 µ m 2 . Our results strongly suggest graphene film as a serviceable component in commercial display products. The flexible and foldable display applications are expected to be main beneficiaries of our method.