A Small-Molecule Zwitterionic Electrolyte without a π-Delocalized Unit as a Charge-Injection Layer for High-Performance PLEDs

摘要

Conjugated organic optoelectronic materials have attracted significant attention owing to their application in light-emitting diodes (LEDs), solar cells, thin-film transistors, optically amplified biosensor assays, and other areas. For organic optoelectronic devices, interfacial modification between the organic material and the electrode is a crucial issue and becomes one of the most important research focal points, since charge injection/extraction affect device performance greatly. Excellent charge injection leads to a lower turn-on voltage and higher efficiency in organic LEDs. In the case of organic solar cells, good interface properties result in a higher short-circuit current and a higher open-circuit voltage, which are the most important factors for solar-cell performance.