Low-Dimensional CsPbBr₃@CoBr₂ Super-Nanowire Structure for Perovskite/PMMA Composite with Highly Blue Emissive Performance

Abstract

In this study, low-dimensional CsPbBr3@CoBr2 super-nanowire (SNW) structures were synthesized via a one-pot heating strategy for highly blue emissions. By introducing CoBr2 to CsPbBr3 precursors, the shape of perovskite nanocrystals was changed from cuboids to a super-nanowire structure, as revealed through a transmission electron microscope. SNWs were formed from stacked segments of nano-plates (lateral dimension of 10–12 nm and thickness of ~2.5 nm) with lengths of several microns. The fabricated sample absorbs light at a wavelength of 3@CoBr2 SNWs highly promising for a range of photolumicescence applications, such as a high color rendering index lighting and transparent blue emissive screen.

Keywords

• perovskite/PMMA composite
• blue emission
• transparent emissive screen
• high color rendering index (CRI) lighting