All-printable polymer light-emitting diodes (PLEDs) are realized by the development of a new bilayer cathode that combines Ag paste with aminoalkyl- substituted polyfluorenes. PLEDs with a printed Ag-paste cathode (see figure) show comparable device performance to those devices incorporating a low-work-function cathode (Ba/Al) that is deposited thermally.
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Zeng et al. (2007) studied this question.
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