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The Weak Microcavity as an Enabler for Bright and Fault-tolerant Light-emitting Electrochemical Cells

Authors :
Lindh, E. Mattias
Lundberg, Petter
Lanz, Thomas
Mindemark, Jonas
Edman, Ludvig
Lindh, E. Mattias
Lundberg, Petter
Lanz, Thomas
Mindemark, Jonas
Edman, Ludvig
Publication Year :
2018

Abstract

The light-emitting electrochemical cell (LEC) is functional at substantial active-layer thickness, and is as such heralded for being fit for low-cost and fault-tolerant solution-based fabrication. We report here that this statement should be moderated, and that in order to obtain a strong luminous output, it is fundamentally important to fabricate LEC devices with a designed thickness of the active layer. By systematic experimentation and simulation, we demonstrate that weak optical microcavity effects are prominent in a common LEC system, and that the luminance and efficiency, as well as the emission color and the angular intensity, vary in a periodic manner with the active-layer thickness. Importantly, we demonstrate that high-performance light-emission can be attained from LEC devices with a significant active-layer thickness of 300 nm, which implies that low-cost solution-processed LECs are indeed a realistic option, provided that the device structure has been appropriately designed from an optical perspective.<br />Correction in: Scientific Reports https://doi.org/10.1038/s41598-018-25287-x, published online 03 May 2018. Scientific Reports, vol. 8, article number: 8697. DOI: 10.1038/s41598-018-26760-3.

Details

Database :
OAIster
Notes :
application/pdf, English
Publication Type :
Electronic Resource
Accession number :
edsoai.on1233984382
Document Type :
Electronic Resource
Full Text :
https://doi.org/10.1038.s41598-018-25287-x