Enhanced Luminance of Electrochemical Cells with a Rationally Designed Ionic Iridium Complex and an Ionic Additive

• DOI: 10.1021/acsami.6b01816
• Publication Date: 2016-03-29T22:06:39Z
• Authors: Kristin J. Suhr; Lyndon D. Bastatas; Yulong Shen; Lauren A. Mitchell; Bradley J. Holliday; Jason D. Slinker
• Keywords: Electrochemical cell

Light-emitting electrochemical cells (LEECs) offer the potential for high efficiency operation from an inexpensive device. However, long turn-on times and low luminance under steady-state are longstanding LEEC issues. Here, we present a single-layer with custom-designed iridium(III) complex lithium salt additive enhanced device performance. These devices display reduced response times, modest lifetimes, peak luminances as 5500 cd/m2, 80% higher than comparable unoptimized 50% salt-free Improved suggests that addition balances space charge effects at interfaces. Extrapolation favorable half-lives of 120 ± 10 h 1000 cd/m2 3800 400 100 cd/m2. Overall, design engineering produce competitive LEECs simple, architectures.