Laser-induced micro-patterning of organic semiconductor layers for use in organic light-emitting diode displays

Masahiro Misaki; Asami Toba; Daisuke Goto; Chihaya Adachi; Yasuko Koshiba; Kenji Ishida; Yasukiyo Ueda

doi:10.3169/mta.3.143

Laser-induced micro-patterning of organic semiconductor layers for use in organic light-emitting diode displays

Masahiro Misaki, Asami Toba, Daisuke Goto, Chihaya Adachi, Yasuko Koshiba, Kenji Ishida, Yasukiyo Ueda

Applied Chemistry

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

We proposed a novel method for micro-patterning organic semiconductor layers by using a laser irradiation system. The method was demonstrated with a precursor that changes solubility after thermal conversion. For micro-scale patterning, brief irradiation was crucial to prevent heat diffusion in the substrate. We found that preheating on a hot-plate is important for shortening the laser irradiation time necessary for the thermal conversion. The patterning resolution also depended on the kind of substrates as well as the laser exposure time. High-resolution line patterns with a width of 12 μm were successfully achieved on ITO substrates. Organic light-emitting diodes utilizing a patterned emitting layer, with line widths of 20 μm and spacing of 85 μm, were demonstrated.

Original language	English
Pages (from-to)	143-148
Number of pages	6
Journal	ITE Transactions on Media Technology and Applications
Volume	3
Issue number	2
DOIs	https://doi.org/10.3169/mta.3.143
Publication status	Published - 2015

All Science Journal Classification (ASJC) codes

Signal Processing
Media Technology
Computer Graphics and Computer-Aided Design

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abstract = "We proposed a novel method for micro-patterning organic semiconductor layers by using a laser irradiation system. The method was demonstrated with a precursor that changes solubility after thermal conversion. For micro-scale patterning, brief irradiation was crucial to prevent heat diffusion in the substrate. We found that preheating on a hot-plate is important for shortening the laser irradiation time necessary for the thermal conversion. The patterning resolution also depended on the kind of substrates as well as the laser exposure time. High-resolution line patterns with a width of 12 μm were successfully achieved on ITO substrates. Organic light-emitting diodes utilizing a patterned emitting layer, with line widths of 20 μm and spacing of 85 μm, were demonstrated.",

author = "Masahiro Misaki and Asami Toba and Daisuke Goto and Chihaya Adachi and Yasuko Koshiba and Kenji Ishida and Yasukiyo Ueda",

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AU - Misaki, Masahiro

AU - Toba, Asami

AU - Goto, Daisuke

AU - Adachi, Chihaya

AU - Koshiba, Yasuko

AU - Ishida, Kenji

AU - Ueda, Yasukiyo

PY - 2015

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N2 - We proposed a novel method for micro-patterning organic semiconductor layers by using a laser irradiation system. The method was demonstrated with a precursor that changes solubility after thermal conversion. For micro-scale patterning, brief irradiation was crucial to prevent heat diffusion in the substrate. We found that preheating on a hot-plate is important for shortening the laser irradiation time necessary for the thermal conversion. The patterning resolution also depended on the kind of substrates as well as the laser exposure time. High-resolution line patterns with a width of 12 μm were successfully achieved on ITO substrates. Organic light-emitting diodes utilizing a patterned emitting layer, with line widths of 20 μm and spacing of 85 μm, were demonstrated.

AB - We proposed a novel method for micro-patterning organic semiconductor layers by using a laser irradiation system. The method was demonstrated with a precursor that changes solubility after thermal conversion. For micro-scale patterning, brief irradiation was crucial to prevent heat diffusion in the substrate. We found that preheating on a hot-plate is important for shortening the laser irradiation time necessary for the thermal conversion. The patterning resolution also depended on the kind of substrates as well as the laser exposure time. High-resolution line patterns with a width of 12 μm were successfully achieved on ITO substrates. Organic light-emitting diodes utilizing a patterned emitting layer, with line widths of 20 μm and spacing of 85 μm, were demonstrated.

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Laser-induced micro-patterning of organic semiconductor layers for use in organic light-emitting diode displays

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