Jump to main content
Jump to site search

Issue 13, 2020
Previous Article Next Article

Perovskite hetero-anionic-sublattice interfaces for optoelectronics and nonconventional electronics

Author affiliations

Abstract

The perovskite structure provides a versatile framework for functional materials and their high-quality heteroepitaxial interfaces. Perovskite halides (PH) have attracted intense interest for their application in optoelectronics. Oxides are another major class of perovskites that are widely used in fuel cells, nonconventional electronics and electrochemistry. Interfacing different perovskite oxides (POs) has led to a multitude of fascinating discoveries. By introducing anionic degree of freedom, we expect that perovskite hetero-anionic-sublattice interfaces can provide a new platform for emergent phenomena that may or may not have homo-oxygen-sublattice interface analogues. In this work, we investigate the interfaces between the all-inorganic PH CsPbBr3, the emerging double perovskite halide (dPH) Cs2TiBr6 and various common POs. Based on the band alignment properties, these POs are considered to be suitable carrier transport materials (CTMs) for CsPbBr3 and Cs2TiBr6 in either light-harvesting or light-emitting devices. In addition, these perovskite hetero-anionic-sublattice interfaces are found to be defect- and dangling bond-free due to compatible crystal lattices, making POs potentially outperform conventional binary transition-metal–oxide and organic CTMs. Besides optoelectronics, the potential of perovskite hetero-anionic-sublattice interfaces for nonconventional electronics is also explored. As examples, two-dimensionally confined electron–hole systems are predicted at the asymmetric interfaces in both Cs2TiBr6:LaAlO3 and CsPbBr3:LaAlO3 superlattice structures. This finding, along with the optically active properties of PHs, may spark novel applications of light–electron interaction in perovskite systems. This work presents new opportunities for perovskite heteroepitaxial interfaces.

Graphical abstract: Perovskite hetero-anionic-sublattice interfaces for optoelectronics and nonconventional electronics

Back to tab navigation

Supplementary files

Article information


Submitted
30 Aug 2019
Accepted
26 Feb 2020
First published
26 Feb 2020

Nanoscale, 2020,12, 7263-7272
Article type
Paper

Perovskite hetero-anionic-sublattice interfaces for optoelectronics and nonconventional electronics

D. Cheng, D. Kong, X. Sheng, L. Yin and H. Li, Nanoscale, 2020, 12, 7263
DOI: 10.1039/C9NR07475A

Social activity

Search articles by author

Spotlight

Advertisements