High-Performance Planar Perovskite Optoelectronic Devices: A Morphological and Interfacial Control by Polar Solvent Treatment

Jae Choul Yu; Da Bin Kim; Gyoelim Baek; Bo Ram Lee; Eui Dae Jung; Seungjin Lee; Jae Hwan Chu; Doh-Kwon Lee; Kyoung Jin Choi; Shinuk Cho; Myoung Hoon Song

doi:10.1002/adma.201500465

High-Performance Planar Perovskite Optoelectronic Devices: A Morphological and Interfacial Control by Polar Solvent Treatment

Adv Mater. 2015 Jun 17;27(23):3492-500. doi: 10.1002/adma.201500465. Epub 2015 May 4.

Authors

Affiliations

¹ School of Materials Science Engineering and KIST-UNIST Ulsan Center for Convergent, Materials Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan, 689-798, Republic of Korea.
² Departmat of Physics and EHSRC, University of Ulsan, Ulsan, 680-749, Republic of Korea.
³ School of Materials Science Engineering, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan, 689-798, Republic of Korea.
⁴ Photo-electronic Hybrids Research Center and KIST-UNIST Ulsan Center for Convergent Materials, Korea Institute of Science and Technology (KIST), Seoul, 136-791, Republic of Korea.

PMID: 25939990
DOI: 10.1002/adma.201500465

Abstract

Highly efficient planar perovskite optoelectronic devices are realized by amine-based solvent treatment on compact TiO2 and by optimizing the morphology of the perovskite layers. Amine-based solvent treatment between the TiO2 and the perovskite layers enhances electron injection and extraction and reduces the recombination of photogenerated charges at the interface.

Keywords: electroluminescence (EL); morphological control; perovskite; perovskite light-emitting diodes (PeLED); solar cells.