Ambipolar Charge Injection and Bright Light Emission in Hybrid Oxide/Polymer Transistors Doped with Poly(9‐Vinylcarbazole) Based Polyelectrolytes (Adv. Mater. Technol. 20/2024)

Light-Emitting Electrochemical Transistors The cover image illustrates the integration of polyelectrolytes in light-emitting electrochemical transistors (LECTs), showcasing their multifunctional capabilities in electrochemistry and optoelectronics. In article number 2302207, Bright Walker, Han-Ki Kim, Jung Hwa Seo, and co-workers present LECTs that feature a streamlined device architecture enabled by electrochemical doping using poly(9-vinylcarbazole) doped with lithium ions (Li+) and copper (II) ions (Cu2+). The synergistic effects of these hybrid polyelectrolytes markedly enhance electron-hole recombination efficiency, resulting in bright and efficient electroluminescence.