Multicolored organic/inorganic hybrid perovskite light-emitting diodes

Young-Hoon Kim; Himchan Cho; Jin Hyuck Heo; Tae-Sik Kim; NoSoung Myoung; Chang-Lyoul Lee; Sang Hyuk Im; Tae-Woo Lee

doi:10.1002/adma.201403751

Multicolored organic/inorganic hybrid perovskite light-emitting diodes

Adv Mater. 2015 Feb 18;27(7):1248-54. doi: 10.1002/adma.201403751. Epub 2014 Nov 25.

Authors

Young-Hoon Kim¹, Himchan Cho, Jin Hyuck Heo, Tae-Sik Kim, NoSoung Myoung, Chang-Lyoul Lee, Sang Hyuk Im, Tae-Woo Lee

Affiliation

¹ Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 790-784, Republic of Korea.

PMID: 25420784
DOI: 10.1002/adma.201403751

Abstract

Bright organic/inorganic hybrid perov-skite light-emitting diodes (PrLEDs) are realized by using CH3 NH3 PbBr3 as an emitting layer and self-organized buffer hole-injection layer (Buf-HIL). The PrLEDs show high luminance, current efficiency, and EQE of 417 cd m(-2) , 0.577 cd A(-1) , and 0.125%, respectively. Buf-HIL can facilitate hole injection into CH3 NH3 PbBr3 as well as block exciton quenching.

Keywords: electroluminescence; hole-injection layers; light-emitting diodes; organic/inorganic hybrids; perovskites.