Supramolecular assembly of blue and green halide perovskites with near-unity photoluminescence
Lawrence Berkeley National Laboratory · Kavli Energy NanoScience Institute · +1 more institution
Abstract
The metal-halide ionic octahedron is the optoelectronic unit for halide perovskites, and a crown ether–assisted supramolecular assembly approach can pack various ionic octahedra into tunable symmetries. In this work, we demonstrate near-unity photoluminescence quantum yield (PLQY) blue and green emission with the supramolecular assembly of hafnium (Hf) and zirconium (Zr) halide octahedral clusters. (18C6@K) 2 HfBr 6 powders showed blue emission with a near-unity PLQY (96.2%), and green emission was also achieved with (18C6@K) 2 ZrCl 4 Br 2 powders at a PLQY of 82.7%. These highly emissive powders feature facile low-temperature solution-based synthesis conditions and maintain high PLQY in solution-processable…
Citation impact
- FWCI
- 27.62
- Percentile
- 100%
- References
- 66
Authors
11- CZCheng ZhuCorresponding
Lawrence Berkeley National Laboratory, Kavli Energy NanoScience Institute, University of California, Berkeley
- JJJianbo JinCorresponding
University of California, Berkeley
- ZWZhen Wang
University of California, Berkeley
- ZXZhenpeng Xu
University of California, Berkeley
- MCMaria C. Folgueras
Lawrence Berkeley National Laboratory, Kavli Energy NanoScience Institute, University of California, Berkeley
Topics & keywords
- Photoluminescence
- Halide
- Materials science
- Supramolecular chemistry
- Quantum yield
- Ionic bonding
- Crown ether
- Octahedron