Journal article
Control of morphology, photoluminescence, and stability of colloidal methylammonium lead bromide nanocrystals by oleylamine capping molecules
Journal of colloid and interface science, v 484, pp 17-23
15 Dec 2016
PMID: 27572611
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
[Display omitted]
Methylammonium lead bromide (CH3NH3PbBr3) thin films and nanocrystals are useful for solar cells and LED applications. In order to improve stability in ambient environment, CH3NH3PbBr3 nanocrystals have been synthesized using oleylamine as capping molecule. It was found that by increasing the oleylamine to CH3NH3PbBr3 perovskite ratio (OPR), the photoluminescence wavelengths of CH3NH3PbBr3 nanocrystals could be varied from 505nm (green) to 450nm (blue). The change in emission wavelength is associated with a morphology change from nanoplatelets of ∼10nm width at OPR<1 to nanoparticles of ∼3nm diameter at OPR>1. It is suggested that the morphology change of nanocrystals is a result of geometric packing constraint of the sizes of oleylamine and PbBr3 octahedra. The nanocrystals with OPR=0.75 maintain photoluminescence property for more than 6months in ambient condition and can sustain temperature of 150°C for 30min.
Metrics
Details
- Title
- Control of morphology, photoluminescence, and stability of colloidal methylammonium lead bromide nanocrystals by oleylamine capping molecules
- Creators
- Cheng-Hsin Lu - Department of Materials Science and Engineering, Drexel University, Philadelphia, PA 19104, United StatesJiaang Hu - Department of Materials Science and Engineering, Drexel University, Philadelphia, PA 19104, United StatesWan Y Shih - School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA 19104, United StatesWei-Heng Shih - Department of Materials Science and Engineering, Drexel University, Philadelphia, PA 19104, United States
- Publication Details
- Journal of colloid and interface science, v 484, pp 17-23
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems; Materials Science and Engineering
- Web of Science ID
- WOS:000385690200003
- Scopus ID
- 2-s2.0-84983493574
- Other Identifier
- 991014878347504721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Chemistry, Physical