Fast response single‐ion transport light‐emitting electrochemical cell based on PPV derivative

Abstract

ABSTRACT:We present the electrical and optical characteristics of a single-ion transport light-emitting electrochemical cell (SLEC) based on poly(p-phenylene vinylene) (PPV) derivative containing aryl-substituted oxadiazole in the backbone (MEH-OPPV). Ionized polyurethane-poly(ethylene glycol) (PUI) used as polymer electrolyte is introduced into the active layer of the SLEC. The turn-on voltage of the SLEC is about 3 V according to its current density-voltage (J-V) characteristics. The response time of the SLEC is less than 10 ms, lower than that of normal LECs by two orders of magnitudes roughly. The reasons of the quick response for the SLEC are discussed in the article.

Recent Applications of Conjugated Polyelectrolytes in Optoelectronic Devices

“…[80,81] In addition, single ion conducting PLECs using ionized polyurethane-poly(ethylene glycol) (PUI) as the polymer electrolyte, where the anions are covalently bonded to the PUI side chains, have shown very fast response times. [82][83][84] Such observations are significant in view of the typical slow rise times due to ion motion/rearrangement. Cimrova et al [22] fabricated PLECs using blue emitting sulfonated poly( p-phenylene) with H þ , Na þ or tetradecyltrimethylammonium (TDMA) counterions (P14)(Scheme 4).…”