PLASMA MODIFICATION OF ORGANIC FILMS

摘要

Organic thin films are being exploited for a number of applications rangi ng from solar cells to organic light-emitting diodes (OLEDs). In such devices i t is necessary to form a high quality electrical contact with the organic film of interest. The ability of a metal contact to stick to an organic film is ofte n limited. This can be particularly problematic as evidenced by the deleterious formati on of dark spots in OLEDs. We have shown that an organic film exposed to a plasma treatment demonstrates improved wettability, an enhanced sticking coefficient and better adhesion to a metal film thereafter deposited. It is further believed that this process leads to an improved electrical contact and suppression of dark spot formation. Thus, an increase in the lifetime of OLE Ds and other electrical devices incorporating organic thin films is anticipated .