The growth kinetics of CsPbBr3 microwires on mica: an in situ investigation
- 3 April 2020
- journal article
- research article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 53 (23), 235105
- https://doi.org/10.1088/1361-6463/ab7fd5
Abstract
1D all-inorganic perovskites microwires horizontally aligned on mica show great potential in high performance optical and optoelectronic devices. In spite of the tremendous progress in their growth and properties studies, the growth mechanism for epitaxy of perovskites microwires on mica has not been well understood. Herein, we present a home-built in situ growth monitoring system to study the growth mechanism of the CsPbBr3 microwires on mica with the physical vapor deposition (PVD). Through in situ monitoring the growth of the CsPbBr3 microwires, the detailed growth behavior can be directly investigated. It is found that the length growth rate of the microwires may be enhanced with the large undercooling (the temperature difference between the precursor and the deposition substrate), which provides the possibility to achieve the rapid growth of the wires. Additionally, CsPbBr3 microwires with smaller diameter show the higher growth rate than that with larger diameter, which is consistent with the theoretical analysis based on the adatom diffusion. By increasing the undercooling, CsPbBr3 microwires with the length up to 200 mu m can be grown in 15 s, which is more efficient than the traditional vapor growth routes. Furthermore, the photoluminescence and high performance of the photodetector device based on these CsPbBr3 wire arrays indicate that the as-grown CsPbBr3 wires have the potential in the optical and optoelectronic device applications.Funding Information
- Natural Science Foundation of Hunan Province (No.2017JJ2025)
- National Natural Science Foundation of China (No.51772088)
This publication has 48 references indexed in Scilit:
- Interface dynamics and crystal phase switching in GaAs nanowiresNature, 2016
- Degradation of Methylammonium Lead Iodide Perovskite Structures through Light and Electron Beam Driven Ion MigrationThe Journal of Physical Chemistry Letters, 2016
- Photoluminescence and surface photovoltage properties of ZnSe nanoribbonsScience Bulletin, 2015
- Ultrafast Interfacial Electron and Hole Transfer from CsPbBr3 Perovskite Quantum DotsJournal of the American Chemical Society, 2015
- Direct Observation of Nanoscale Size Effects in Ge Semiconductor Nanowire GrowthNano Letters, 2010
- Gibbs-Thomson and diffusion-induced contributions to the growth rate of Si, InP, and GaAs nanowiresPhysical Review B, 2009
- Diffusion-induced growth of GaAs nanowhiskers during molecular beam epitaxy: Theory and experimentPhysical Review B, 2005
- Fundamental aspects of VLS growthJournal of Crystal Growth, 1975
- The molecular mechanism of solidificationActa Metallurgica, 1964
- Theory of Crystal Growth in Undercooled Pure LiquidsThe Journal of Chemical Physics, 1956