(Invited) Printed Poly-Si TFTs on Paper for Beyond Plastic Electronics

Silicon can be printed using liquid silicon ink, which is a mixture of polymerized cyclopentasilane (CPS) and a solvent. Thermal annealing higher than 350°C of this material, however, was necessary, to convert it to solid silicon, which prevented its usage on inexpensive substrates with a limited th...

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Hauptverfasser: Ishihara, Ryoichi, Trifunovic, Miki, Sberna, Paolo, Shimoda, Tatsuya
Format: Tagungsbericht
Sprache:eng
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Zusammenfassung:Silicon can be printed using liquid silicon ink, which is a mixture of polymerized cyclopentasilane (CPS) and a solvent. Thermal annealing higher than 350°C of this material, however, was necessary, to convert it to solid silicon, which prevented its usage on inexpensive substrates with a limited thermal budget. We review a novel method that forms polycrystalline silicon (poly-Si) patterns directly on paper using the same liquid silicon with doctor-blade coating and local irradiation of excimer-laser with room temperature process. We review also the process and electrical properties of poly-Si TFTs fabricated on the paper. This technique will breakthrough the printed electronics by enabling applications such as fast printed electronics that are inexpensive, fully-recyclable, biodegradable and even edible.
ISSN:1938-5862
1938-6737
1938-6737
1938-5862
DOI:10.1149/08611.0047ecst