Encapsulation of organic light-emitting diode using thermal chemical-vapour-deposition polymer film
- 21 February 2001
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 34 (5) , 740-743
- https://doi.org/10.1088/0022-3727/34/5/312
Abstract
The encapsulation effect of thermal chemical-vapour-deposition polymer films (TCVDPF) has been studied for organic light-emitting diodes (OLED). We used poly-p-xylylene (PPX) and/or poly-2-chloro-p-xylylene (PCPX) films as TCVDPF. For the encapsulation, TCVDPF was deposited on the OLED during a dry process at room temperature. The lifetime of an encapsulated OLED with 0.6 µm thick TCVDPF was about four times longer than that of a non-encapsulated OLED in air. The lifetime of the OLED increased with increasing thickness of the TCVDPF. We conclude that the effect of TCVDPF encapsulation on the long-term stability of the OLED is due to the prevention of oxygen and moisture in air and several other factors.Keywords
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