JP5352118B2 - 有機トランジスタ素子と電子・電気機器 - Google Patents
有機トランジスタ素子と電子・電気機器 Download PDFInfo
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Description
Y.Yang,et.al.Nature 372,344(1994) K.Kudo,et.al.Thin Salid Films,393,362(2001) L.Ma,et.al.Appl.Phys.Lett.,85,5084(2004) K.Nakayama,et.al.Appl.Phys.Lett., 82,4584(2003) S.Fujimoto,et.al.Appl.Phys.Lett., 87,133503(2005) K.Nakayama,et.al.Appl.Phys.Lett., 88,153512(2006)
本発明の有機トランジスタは、前記のとおり、エミッタ電極とコレクタ電極との間に、有機半導体層とシート上ベース電極が設けられた有機トランジスタ素子であって、ベース・コレクタ電極の間に、ベース電極に隣接して電荷透過促進層、およびオフ電流抑制層を含むことを特徴とする。
(2)電流増加層の挿入
さらに、本発明の効果を増強する素子形態として、ベース・コレクタ電極間の有機半導体層に隣接して、有機半導体より成る電流増加層を挿入することにより、上記電荷透過促進層の効果を著しく増強できることを特徴とする有機トランジスタが挙げられる。
図1は、実施例1における典型的な素子構造である。素子は、ITOガラス基板上に、真空蒸着によって成膜した。
表2は、実施例1と同様の素子において、電荷透過促進層としてLiF以外の材料(Li2O、Liq、CsF、Cs2CO3)を用いた場合の変調特性である。素子は、大気圧下加熱処理なしで作製され、Vc=5V、Vb=3Vにおける変調電流量を標記してある。
図3は、電流増加層を備えた素子の構造である。
Claims (7)
- エミッタ電極とコレクタ電極との間に有機半導体層とシート状のベース電極が設けられ、前記有機半導体層がエミッタ電極とベース電極との間、並びにベース電極とコレクタ電極との間に設けられている有機トランジスタ素子であって、前記ベース電極とコレクタ電極の間に、電荷透過促進層を有し、前記ベース電極とコレクタ電極との間に、前記有機半導体層の前記ベース電極側に隣接して電流増加層が配置されていることを特徴とする有機トランジスタ素子。
- 前記電荷透過促進層は、ベース電極に隣接して配置されていることを特徴とする請求項1に記載の有機トランジスタ素子。
- 前記電荷透過促進層は、Li、Na、K、Rb、Ca、Sr、およびBaのアルカリ金属またはアルカリ土類金属の化合物もしくは錯体のうちの少なくとも1種により構成されていることを特徴とする請求項1または2に記載の有機トランジスタ素子。
- 請求項1から3のいずれか一項に記載の有機トランジスタ素子において、前記電荷透過促進層に隣接して漏れ電流抑制層が配置されていることを特徴とする有機トランジスタ素子。
- 前記漏れ電流抑制層は、電子輸送性有機半導体材により構成されていることを特徴とする請求項4に記載の有機トランジスタ素子。
- 前記電流増加層は、電子輸送性材により構成されていることを特徴とする請求項1から5のいずれか一項に記載の有機トランジスタ素子。
- 請求項1から6のうちのいずれか一項に記載の有機トランジスタ素子をその構成の少なくとも一部としていることを特徴とする電子・電気機器。
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JP5499045B2 (ja) * | 2009-09-04 | 2014-05-21 | 大日精化工業株式会社 | 電流増幅型トランジスタ素子及び電流増幅型発光トランジスタ素子 |
US9608217B2 (en) | 2012-04-27 | 2017-03-28 | Dainichiseika Color & Chemicals Mfg. Co., Ltd. | Transistor element |
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JP5182775B2 (ja) * | 2006-03-22 | 2013-04-17 | 国立大学法人大阪大学 | トランジスタ素子及びその製造方法、電子デバイス、発光素子並びにディスプレイ |
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