writer：Wei Wang,* Shuang Fang Lim, Soo Jin Chua
keywords：organic light-emitting diodes; calcium cathode; Bubble;
source：期刊
specific source：Journal of Applied Physics
Issue time：2002年

The formation and growth of bubbles within dark spots in organic light-emitting diodes comprised of an electroluminescent polymer and a Ca–Ag cathode have been observed and studied. Our studies indicate that electric stress and pinholes are two important parameters affecting the formation of bubbles. More detailed analysis reveals the dependence of bubble area on the pinhole diameter.