Figure 3.
(a) Schematic diagram of the chemical species and electrochemical processes in an ECL device under an AC bias. The photographs of the ON state for (b) a single sticker ECL pixel, (c) patterned letters of the “STICKER IONGEL ECL” on glass/ITO and (d) static letters on a bendable PET/ITO substrate. The applied voltage and frequency were VPP = 3.6 V and 1 Hz, respectively.