AI Article Synopsis
- - The study investigates LED structures using solution-grown films of CsPbBr nanocrystals embedded in a CsPbBr matrix, focusing on their performance as a recombination layer.
- - Kinetic measurements show that pure CsPbBr exhibits second-order kinetics at high carrier density, while the nanoinclusion composite primarily shows first-order kinetics.
- - Enhanced absorption strength indicates improved oscillator strength in the nanocrystal composite compared to pure CsPbBr, correlating with previously reported exciton radiative lifetimes in similar materials.
Article Abstract
Solution-grown films of CsPbBr nanocrystals imbedded in Cs PbBr are incorporated as the recombination layer in light-emitting diode (LED) structures. The kinetics at high carrier density of pure (extended) CsPbBr and the nanoinclusion composite are measured and analyzed, indicating second-order kinetics in extended and mainly first-order kinetics in the confined CsPbBr , respectively. Analysis of absorption strength of this all-perovskite, all-inorganic imbedded nanocrystal composite relative to pure CsPbBr indicates enhanced oscillator strength consistent with earlier published attribution of the sub-nanosecond exciton radiative lifetime in nanoprecipitates of CsPbBr in melt-grown CsBr host crystals and CsPbBr evaporated films.
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| http://dx.doi.org/10.1002/adma.201703703 | DOI Listing |
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