Elastomeric contact printing for sub-micron patterning of organic films

In this thesis, a novel diffusion-based contact-printing technology is investigated, by which a wide variety of low molecular weight organic materials can be patterned without added temperature, pressure, or chemical processing, with just the use of relief-patterned polymeric (PDMS) stamps. It is determined that the diffusion of organic molecules into the polymer matrix is a solvent-assisted process in which mobile oligomers aid in the removal of organic material. It is further shown that using composite stamps, organic films can be patterned at a sub-100 nm length scale. Among other features, this patterning process has enabled patterning of Organic Light Emitting Diodes on a wavelength scale to reduce total internal reflection and thereby enhance the outcoupling of light from the device.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2012

Author dc:creator

• Ramanan, Sulinya

Advisor dc:contributor.advisor

• Vladimir Bulovic.

• Electrical Engineering and Computer Science.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/77034

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/77034