Direct Room Temperature Synthesis of α-CsPbI3 Perovskite Nanocrystals with High Photoluminescence Quantum Yields: Implications for Lighting and Photovoltaic Applications
Year: 2022
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide Cesium–lead iodide perovskite nanocrystal (PNC) is a promising material for efficient solar cells and red-light-emitting diodes, especially for the cubic-structured α polymorph with its ideal band-gap energy. We report the first room temperature, one-pot synthesis of α-CsPbI 3 PNCs in open air, achieved by optimized ligand–solvent combinations to control the crystallization kinetics and phase preference of CsPbI 3 . The resulting 6.0-nm-sized, α-phase nanocubes have photoluminescence peaks at 642 nm (full-width at half-maximum: 44 nm) and absolute quantum yields of up to 83% after purification. The method is simple, reproducible, scalable, and generalizable to other cesium–lead halide and formamidinium lead iodide PNCs.
Source: ACS Applied Nano Materials
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $5,000
OpenAlex ID: W4293238458