期刊
NANO LETTERS
卷 20, 期 11, 页码 7906-7911出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.0c02571
关键词
hybrid perovskites; resonant metasurfaces; plasmonic luminescence enhancement; Purcell effect
类别
资金
- Singapore Ministry of Education [MOE2016-T31-006]
- Singapore National Research Foundation, Prime Minister's Office [NRF-CRP14-2014-03]
- A*STAR-AME programmatic grant on Nanoantenna Spatial Light Modulators for Next-Gen Display Technologies [A18A7b0058]
- EPSRC [EP/M009122/1] Funding Source: UKRI
Metal-halide perovskites are rapidly emerging as solution-processable optical materials for light-emitting applications. Here, we adopt a plasmonic metamaterial approach to enhance photoluminescence emission and extraction of methylammonium lead iodide (MAPbI(3)) thin films based on the Purcell effect. We show that hybridization of the active metal-halide film with resonant nanoscale sized slits carved into a gold film can yield more than 1 order of magnitude enhancement of luminescence intensity and nearly 3-fold reduction of luminescence lifetime corresponding to a Purcell enhancement factor of more than 300. These results show the effectiveness of resonant nanostructures in controlling metal-halide perovskite light emission properties over a tunable spectral range, a viable approach toward highly efficient perovskite light-emitting devices and single-photon emitters
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