Formation of highly crystalline organic semiconductor thin films by inkjet printed thickness gradients

Wontae Park; John E. Anthony; William S. Wong

doi:10.1117/12.2568099

Formation of highly crystalline organic semiconductor thin films by inkjet printed thickness gradients

Wontae Park, John E. Anthony, William S. Wong

Chemistry

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Highly crystalline organic semiconductor layers patterned from a solution was inkjet printed for the fabrication of TFTs. A novel printing process enabled the micro-scale control of the film formation through the use of precision spatial placement of printed droplets over the device structure. The printing process used temporal and spatial control of the printed droplets to form a crystallization gradient. The gradient, first nucleated over an electrode that defines the TFT structure is used to recrystallize subsequently printed droplets; the initial printed film was then used to recrystallize subsequent printed regions as the channel region is deposited along the channel length. This printed gradient provides a larger grain structure to form within the active region of the TFT. Furthermore, by controlling the fluid dynamics through drying of the printed droplets, the film thickness profiles could be controlled within a specific region where the semiconductor crystallinity was enhanced

Original language	English
Title of host publication	Organic and Hybrid Field-Effect Transistors XIX
Editors	Iain McCulloch, Oana D. Jurchescu
ISBN (Electronic)	9781510637580
DOIs	https://doi.org/10.1117/12.2568099
State	Published - 2020
Event	Organic and Hybrid Field-Effect Transistors XIX 2020 - Virtual, Online, United States Duration: Aug 24 2020 → Sep 4 2020

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	11476
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Organic and Hybrid Field-Effect Transistors XIX 2020
Country/Territory	United States
City	Virtual, Online
Period	8/24/20 → 9/4/20

Bibliographical note

Publisher Copyright:
© 2020 SPIE.

Keywords

Inkjet print
Organic thin film transistors
Solution printing process

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2568099

Cite this

Park, W., Anthony, J. E., & Wong, W. S. (2020). Formation of highly crystalline organic semiconductor thin films by inkjet printed thickness gradients. In I. McCulloch, & O. D. Jurchescu (Eds.), Organic and Hybrid Field-Effect Transistors XIX Article 114760A (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11476). https://doi.org/10.1117/12.2568099

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title = "Formation of highly crystalline organic semiconductor thin films by inkjet printed thickness gradients",

abstract = "Highly crystalline organic semiconductor layers patterned from a solution was inkjet printed for the fabrication of TFTs. A novel printing process enabled the micro-scale control of the film formation through the use of precision spatial placement of printed droplets over the device structure. The printing process used temporal and spatial control of the printed droplets to form a crystallization gradient. The gradient, first nucleated over an electrode that defines the TFT structure is used to recrystallize subsequently printed droplets; the initial printed film was then used to recrystallize subsequent printed regions as the channel region is deposited along the channel length. This printed gradient provides a larger grain structure to form within the active region of the TFT. Furthermore, by controlling the fluid dynamics through drying of the printed droplets, the film thickness profiles could be controlled within a specific region where the semiconductor crystallinity was enhanced ",

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Park, W, Anthony, JE & Wong, WS 2020, Formation of highly crystalline organic semiconductor thin films by inkjet printed thickness gradients. in I McCulloch & OD Jurchescu (eds), Organic and Hybrid Field-Effect Transistors XIX., 114760A, Proceedings of SPIE - The International Society for Optical Engineering, vol. 11476, Organic and Hybrid Field-Effect Transistors XIX 2020, Virtual, Online, United States, 8/24/20. https://doi.org/10.1117/12.2568099

Formation of highly crystalline organic semiconductor thin films by inkjet printed thickness gradients. / Park, Wontae; Anthony, John E.; Wong, William S.
Organic and Hybrid Field-Effect Transistors XIX. ed. / Iain McCulloch; Oana D. Jurchescu. 2020. 114760A (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11476).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AB - Highly crystalline organic semiconductor layers patterned from a solution was inkjet printed for the fabrication of TFTs. A novel printing process enabled the micro-scale control of the film formation through the use of precision spatial placement of printed droplets over the device structure. The printing process used temporal and spatial control of the printed droplets to form a crystallization gradient. The gradient, first nucleated over an electrode that defines the TFT structure is used to recrystallize subsequently printed droplets; the initial printed film was then used to recrystallize subsequent printed regions as the channel region is deposited along the channel length. This printed gradient provides a larger grain structure to form within the active region of the TFT. Furthermore, by controlling the fluid dynamics through drying of the printed droplets, the film thickness profiles could be controlled within a specific region where the semiconductor crystallinity was enhanced

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Formation of highly crystalline organic semiconductor thin films by inkjet printed thickness gradients

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

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