Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Controlling Spontaneous Emission from Perovskite Nanocrystals with Metal-Emitter-Metal Nanostructures

Version 1 : Received: 5 November 2020 / Approved: 6 November 2020 / Online: 6 November 2020 (09:24:13 CET)

How to cite: Tjahjana, L.; Lee, K.; Chin, X.Y.; Tobing, L.Y.; Adhyaksa, G.W.; Zhang, D.H.; Birowosuto, M.D.; Wang, H. Controlling Spontaneous Emission from Perovskite Nanocrystals with Metal-Emitter-Metal Nanostructures. Preprints 2020, 2020110235 (doi: 10.20944/preprints202011.0235.v1). Tjahjana, L.; Lee, K.; Chin, X.Y.; Tobing, L.Y.; Adhyaksa, G.W.; Zhang, D.H.; Birowosuto, M.D.; Wang, H. Controlling Spontaneous Emission from Perovskite Nanocrystals with Metal-Emitter-Metal Nanostructures. Preprints 2020, 2020110235 (doi: 10.20944/preprints202011.0235.v1).

Abstract

We show the enhancement in the intensity and emission rate of perovskite cesium lead bromide (CsPbBr3) and formamidinium lead bromide (FAPbBr3) nanocrystals in the presence of single and double gold layer cavities, which we refer to as Metal-Emitter (ME) and Metal-Emitter-Metal (MEM) nanostructures. Up to 1.9-fold photoluminescence intensity and up to 5.4-fold emission rate enhancements were obtained for FAPbBr3 nanocrystals confined by double gold layers, which are attributed to plasmonic confinement from the gold layers. The experimentally obtained values are validated by analytical calculations and electromagnetic simulations. Such an effective method of manipulation of the spontaneous emission rate by simple plasmonic nanostructures can be utilized in sensing and detection applications.

Subject Areas

perovskite; nanocrystal; Purcell effect

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