シングルクリスタルプラズマで積もったダイヤモンドのキャリアの移動性は高い
Jan Isberg1, Johan Hammersberg, Erik Johansson
1ABB Group Services Center, Corporate Research, Nanotechnology and Innovative Materials Group, Västerås, Sweden. jan.isberg@angstrom.uu.se
まとめ
高純度の単結晶ダイヤモンドは,室温で優れた電子と穴の移動性を示しています. これらの発見は,高性能ダイヤモンド電子機器の開発を進めています.
科学分野:
- 材料科学 材料科学とは
- 固体物理 固体物理学
- 半導体テクノロジーの技術
背景:
- 単結晶ダイヤモンドは,ユニークな電子特性を有しています.
- 化学蒸気堆積 (CVD) の進歩により,高純度ダイヤモンドの成長が可能になりました.
- ダイヤモンドは,高性能の電子機器のための有望な材料です.
研究 の 目的:
- 高純度の単結晶ダイヤモンドの電子と穴の室温漂流運動を測定する.
- 電子アプリケーションのためのCVD栽培ダイヤモンドの品質を評価するために.
- 次世代のダイヤモンド・エレクトロニクスの開発を支援する.
主な方法:
- 厚く,内在的で,自立するダイヤモンドプレートで飛行時間のテクニックを使用しました.
- 電子と穴の両方の低フィールドドリフト移動性を測定しました.
- p-i 交差点ダイオードでの電流-電圧測定を用いて検証された移動性値.
主要な成果:
- 4500cm2/Vsの電子漂移移動性を達成しました.
- 3800cm2/Vsの穴の漂流移動性を達成しました.
- 合成ダイヤモンドで再現可能な電子特性を実証した.
結論:
- CVDで育てられた高純度の単結晶ダイヤモンドは,室温での優れた電荷キャリアの移動性を示しています.
- 測定された移動性は,他の高度な半導体材料と競合しています.
- これらの結果は,実用的な高性能ダイヤモンドエレクトロニクスに向けた重要な進歩を示しています.
関連する概念動画
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