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ACS Appl Mater Interfaces. 2017 Feb 8;9(5):4926-4931. doi: 10.1021/acsami.6b12450. Epub 2017 Jan 30.

Plasmonic Perovskite Light-Emitting Diodes Based on the Ag-CsPbBr3 System.

Author information

1
Department of Electrical & Electronic Engineering, Southern University of Science and Technology , Shenzhen 518055, China.
2
School of Electrical & Electronic Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore.
3
School of Power and Mechanical Engineering, Wuhan University , Wuhan 430072, China.

Abstract

The enhanced luminescence through semiconductor-metal interactions suggests the great potential of device performance improvement via properly tailored plasmonic nanostructures. Surface plasmon enhanced electroluminescence in an all-inorganic CsPbBr3 perovskite light-emitting diode (LED) is fabricated by decorating the hole transport layer with the synthesized Ag nanorods. An increase of 42% and 43.3% in the luminance and efficiency is demonstrated for devices incorporated with Ag nanorods. The device with Ag introduction indicates identical optoelectronic properties to the controlled device without Ag nanostructures. The increased spontaneous emission rate caused by the Ag-induced plasmonic near-field effect is responsible for the performance enhancement. Therefore, the plasmonic Ag-CsPbBr3 nanostructure studied here provides a novel strategy on the road to the future development of perovskite LEDs.

KEYWORDS:

all-inorganic; light-emitting diode; perovskite; plasmonic; silver nanostructures

PMID:
28090776
DOI:
10.1021/acsami.6b12450

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