Optical Materials, volume 94, pages 241-248
Stokes shift engineered, stable core-shell perovskite nanoparticle – Poly(methyl methacrylate) composites with high photoluminescence quantum yield
Publication type: Journal Article
Publication date: 2019-08-01
Electronic, Optical and Magnetic Materials
Organic Chemistry
Inorganic Chemistry
Physical and Theoretical Chemistry
Spectroscopy
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering
Abstract
Organometallic lead halide perovskites are well known for its excellent and unique light-harvesting properties. This brands them as a promising candidate in almost all the optoelectronic devices. Present work demonstrates the synthesis of methylammonium lead bromide, MAPbBr3 quantum dots (QDs) of diameter less than 4 nm and methylammonium - octylammonium lead bromide core-shell type nanoparticles (CSNPs) with a core diameter of about 1–2 nm surrounded by a shell of thickness 4 nm. The core-shell structure was confirmed from crystal structure analysis – X-ray diffraction pattern, transmission electron microscopy (TEM) images and an increased stokes shift between absorption edge and the photoluminescence emission peak. These core-shell nanoparticles with high photoluminescence quantum yield (PLQY) and color tuning ability were incorporated into poly (methyl methacrylate) (PMMA) matrix to form transparent nanocomposites which were highly stable, with reduced wettability and a high PLQY of 88%. PLQY stability of composites towards humidity was examined by keeping the samples fully immersed in water for 18 h, after which PMMA composites were showing PLQY ∼83%, no considerable difference was found compared to dry composites. Dry films (kept sealed in covers) were found to be relatively stable for about one year retaining PLQY of 13%. The composite films of core-shell particles were used to demonstrate a prototype of down converting light emitting diode (LED), emitting pure green light capable of improving the quality of display devices.
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Citations by publishers
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- We do not take into account publications without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Mary Vijila C. V., Rajeev Kumar K., Jayaraj M. K. Stokes shift engineered, stable core-shell perovskite nanoparticle – Poly(methyl methacrylate) composites with high photoluminescence quantum yield // Optical Materials. 2019. Vol. 94. pp. 241-248.
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Mary Vijila C. V., Rajeev Kumar K., Jayaraj M. K. Stokes shift engineered, stable core-shell perovskite nanoparticle – Poly(methyl methacrylate) composites with high photoluminescence quantum yield // Optical Materials. 2019. Vol. 94. pp. 241-248.
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TY - JOUR
DO - 10.1016/j.optmat.2019.05.046
UR - https://doi.org/10.1016/j.optmat.2019.05.046
TI - Stokes shift engineered, stable core-shell perovskite nanoparticle – Poly(methyl methacrylate) composites with high photoluminescence quantum yield
T2 - Optical Materials
AU - Mary Vijila, C V
AU - Rajeev Kumar, K
AU - Jayaraj, M. K.
PY - 2019
DA - 2019/08/01 00:00:00
PB - Elsevier
SP - 241-248
VL - 94
SN - 0925-3467
ER -
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@article{2019_Mary Vijila,
author = {C V Mary Vijila and K Rajeev Kumar and M. K. Jayaraj},
title = {Stokes shift engineered, stable core-shell perovskite nanoparticle – Poly(methyl methacrylate) composites with high photoluminescence quantum yield},
journal = {Optical Materials},
year = {2019},
volume = {94},
publisher = {Elsevier},
month = {aug},
url = {https://doi.org/10.1016/j.optmat.2019.05.046},
pages = {241--248},
doi = {10.1016/j.optmat.2019.05.046}
}