Article
Organic vapor jet printing at micrometer resolution using microfluidic nozzle arrays
Applied Physics Letters
(2011)
Abstract
Organic vapor jet printing with a print head comprised of a microfluidic Si nozzle array is used to deposit parallel lines of an organic semiconductor thin film with a line width of 16 μm16 μm and edge resolution of 4 μm4 μm. Line width and feature size are functions of process conditions, depending strongly on nozzle-to-substrate separation distance. Experimental results are accurately characterized by a direct simulation Monte Carlo model. The model suggests that feature sizes of <1.5 μm<1.5 μm are attainable by this printing process. The ability of the print head to codeposit doped films is demonstrated by growing the emissive layer of a green phosphorescent organic light emitting diode sandwiched between hole and electron transport layers deposited by vacuum thermal evaporation. This device had an external quantum efficiency of 8.8±1.3%8.8±1.3%, comparable to a similar device entirely grown by vacuum thermal evaporation.
Disciplines
Publication Date
January 6, 2011
DOI
https://doi.org/10.1063/1.3536675
Publisher Statement
This is a RoMEO green journal - Must link to publisher version
© 2011 American Institute of Physics
Citation Information
Gregory J. McGraw, Diane L. Peters and Stephen R. Forrest. "Organic vapor jet printing at micrometer resolution using microfluidic nozzle arrays" Applied Physics Letters Vol. 98 Iss. 1 (2011) p. 013302-1 - 013302-3 ISSN: 0003-6951 Available at: http://works.bepress.com/diane-peters/42/