Impact of interface materials on side permeation in indirect encapsulation of organic electronics
Abstract
This work demonstrates the impact of the contact interface between barrier films and adhesives on the side permeation of moisture into packaged devices. When barrier films are brought into contact with the adhesive layer during indirect encapsulation, permeation along defects at this interface can occur due to the imperfect nature of contact, resulting in the formation of pores. The connected network of pores can act as capillaries and be an alternative pathway for water permeation as opposed to the bulk of the adhesive or edge seal materials used for barrier attachment to the package. The rate of water permeation through the capillaries is governed by surface energies of the materials at the interfaces. Experimental results demonstrate that the rate of water permeation is significantly lowered by using materials with higher contact angles at the interface.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 12, 2020
- Source ID
- 10.1116/1.5140665
Entities
People
- Ankit K Singh
- Bernard Kippelen
- Canek Fuentes-Hernandez
- Cheng-Yin Wang
- Samuel Graham
- Wen-Fang Chou
- Xiaojia Jia
Organizations
- Air Force Office of Scientific Research
- Georgia Tech
- National Nuclear Security Administration
- Office of Naval Research