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Solution-Processed Inorganic Transistors and Sub-Micron Non-Lithographic Patterning using Nanoparticle Inks

Published online by Cambridge University Press:  21 February 2011

Brent A. Ridley ,
Babak Nivi ,
Brian N. Hubert ,
Colin A. Bulthaup ,
Eric J. Wilhelm  and
Joseph M. Jacobson
Brent A. Ridley
Affiliation:
MIT Media Laboratory, 20 Ames Street, Cambridge, A 02139
Babak Nivi
Affiliation:
MIT Media Laboratory, 20 Ames Street, Cambridge, A 02139
Brian N. Hubert
Affiliation:
MIT Media Laboratory, 20 Ames Street, Cambridge, A 02139
Colin A. Bulthaup
Affiliation:
MIT Media Laboratory, 20 Ames Street, Cambridge, A 02139
Eric J. Wilhelm
Affiliation:
MIT Media Laboratory, 20 Ames Street, Cambridge, A 02139
Joseph M. Jacobson
Affiliation:
MIT Media Laboratory, 20 Ames Street, Cambridge, A 02139
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Abstract

Pyridine solutions of CdSe nanocrystals were solution-deposited in the fabrication of thin film transistors (TFTs). A peak mobility of 1 cm2V−1s−1 and an ON/OFF ratio of 3×104 were observed for TFTs processed at 350 °C. The nanocrystals acted as a precursor to the bulk material, coalescing to form a semiconductor thin film when heated at plastic-compatible temperatures. Single crystalline regions several hundred times the size of the original semiconductor nanocrystals were observed for films processed at 350 °C. We also report a process for direct liquid phase deposition and patterning of nanoparticle inks at sub-micron resolutions by elastomeric embossing and AFM nanospotting. These results suggest that microelectronic devices produced from nanoparticle-based inks can enjoy the processing advantages usually associated with organic materials while retaining the performance advantages typically associated with inorganic materials.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 581: Symposium F – Nanophase & Nanocomposite Materials II , 1999 , 115
Copyright
Copyright © Materials Research Society 2000

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References

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