Abstract
Two-dimensional halide perovskite composites exhibit enhanced performances not observed in their individual components for versatile optoelectronic applications and beyond, manifesting the positive “1 + 1 > 2” effect.
Highlights
Halide perovskites belong to the enormous perovskite family, which have the form ABX3, where A is a monovalent cation such as methylammonium and alkali cation; B is a bivalent cation such as Pb2+; and X is a monovalent anion such as a halide anion
We summarize the latest progress and future perspectives of 2D halide perovskite composites, focusing on their structures, fundamental optoelectronic properties, characterization techniques and typical use. 2D halide perovskite composites have become the most recently discovered goldmine to be exploited for endless possibilities beyond optoelectronic applications and require joint endeavors of researchers from interdisciplinary fields
We summarize the latest progress on composite structures based on 2D halide perovskites (Fig. 1), focusing on their structure, fundamental optoelectronic properties, characterization techniques and applications
Summary
Halide perovskites belong to the enormous perovskite family, which have the form ABX3, where A is a monovalent cation such as methylammonium and alkali cation; B is a bivalent cation such as Pb2+; and X is a monovalent anion such as a halide anion. With a hydrophobic organic spacer, 2D halide perovskites generally exhibit greater moisture resistance than their 3D counterparts Due to their high photostability, chemical stability and tunable optoelectronic properties, 2D halide perovskite materials have found broad applications in fields such as solar cells and light-emitting diodes (LEDs) in recent years.[14,15] Usually in these devices, crystals growing along the vertical direction of the substrate in the film contain numerous phases instead of a single phase. His main topics were focused on DNA photonics study on the femtosecond time scale and photoinduced electron and energy transfer processes in DNA upon photon excitation He obtained his PhD Degree in May. 2008 and became an Associate Professor of Chemistry at Lanzhou University in October. This review is expected to provide new insights for the future direction of 2D perovskite composites
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