Efficient Flexible Organic/Inorganic Hybrid Perovskite Light-Emitting Diodes Based on Graphene Anode

Hong-Kyu Seo; Hobeom Kim; Jaeho Lee; Min-Ho Park; Su-Hun Jeong; Young-Hoon Kim; Sung-Joo Kwon; Tae-Hee Han; Seunghyup Yoo; Tae-Woo Lee

doi:10.1002/adma.201605587

Efficient Flexible Organic/Inorganic Hybrid Perovskite Light-Emitting Diodes Based on Graphene Anode

Adv Mater. 2017 Mar;29(12). doi: 10.1002/adma.201605587. Epub 2017 Jan 24.

Authors

Affiliations

¹ Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk, 790-784, Republic of Korea.
² School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Republic of Korea.
³ Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.

PMID: 28117521
DOI: 10.1002/adma.201605587

Abstract

Highly efficient organic/inorganic hybrid perovskite light-emitting diodes (PeLEDs) based on graphene anode are developed for the first time. Chemically inert graphene avoids quenching of excitons by diffused metal atom species from indium tin oxide. The flexible PeLEDs with graphene anode on plastic substrate show good bending stability; they provide an alternative and reliable flexible electrode for highly efficient flexible PeLEDs.

Keywords: exciton quenching; flexible electrodes; graphene; organic/inorganic hybrid perovskites; perovskite light emitting diodes; photoluminescence lifetime.