On the limited operational lifetime of light-emitting electrochemical cells
Light-emitting electrochemical cells offer efficient light-emission but suffer from short operational lifetimes. The latter is demonstrated to stem from photoinduced chemical reactions involving the conjugated polymer in the light-emitting p-n junction region, as evidenced by, e.g., optical and Raman microscopy (see figure). It is possible to alleviate the extent of these side reactions, and accor