2026-09-19T13:29:23Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/770342022-01-13T07:54:29Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Vladimir Bulovic.
Ramanan, Sulinya
Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
2013-02-14T15:40:38Z
2013-02-14T15:40:38Z
2012
2012
http://hdl.handle.net/1721.1/77034
825819530
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2012.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 87-89).
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.
by Sulinya Ramanan.
M.Eng.
89 p.
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by
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http://dspace.mit.edu/handle/1721.1/7582
Electrical Engineering and Computer Science.
Elastomeric contact printing for sub-micron patterning of organic films
Thesis
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<Abstract>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.</Abstract>
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