Lim, KTP;
Deakin, C;
Ding, B;
Bai, X;
Griffin, P;
Zhu, T;
Oliver, RA;
(2019)
Encapsulation of methylammonium lead bromide perovskite in nanoporous GaN.
APL Materials
, 7
(2)
, Article 021107. 10.1063/1.5083037.
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Abstract
Halide perovskites hold exceptional promise as cheap, low temperature solution-processed optoelectronic materials. Yet they are hindered by poor structural and chemical stability, rapidly degrading when exposed to moisture or air. We demonstrate a solution-phase method for infiltrating methylammonium lead bromide perovskite (CH3NH3PbBr3, or MAPbBr3) into nanoporous GaN which preserved the green photoluminescence of the perovskite after up to 1 year of storage under ambient conditions. Besides a protective effect, confinement within the porous GaN matrix also resulted in a blueshift of the perovskite emission with decreasing pore size, suggesting an additional templating effect of the pores on the size of the perovskite crystals within. We anticipate that our method may be generalised to related perovskite materials, offering a route to producing composites of interest for use in optoelectronic devices for various applications.
| Type: | Article |
|---|---|
| Title: | Encapsulation of methylammonium lead bromide perovskite in nanoporous GaN |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/1.5083037 |
| Publisher version: | https://doi.org/10.1063/1.5083037 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| Keywords: | Science & Technology, Technology, Physical Sciences, Nanoscience & Nanotechnology, Materials Science, Multidisciplinary, Physics, Applied, Science & Technology - Other Topics, Materials Science, Physics, EXCITON BINDING-ENERGY, EFFECTIVE MASSES, HALIDE, NANOCRYSTALS, CARRIERS |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10092008 |
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