ZnO(1100) 上にある銅フタロシアニン薄膜の結晶構造
Amy C Cruickshank1, Christian J Dotzler, Salahud Din
1Department of Materials and London Centre for Nanotechnology, Imperial College London, Exhibition Road, London SW7 2AZ, United Kingdom.
Journal of the American Chemical Society
|August 18, 2012
まとめ
ZnO基板上の銅フタロシアニン (CuPc) 薄膜の構造は,厚さによって変化します. 厚いフィルムは混合分子配列を示し,光電子デバイスの特性に影響を与えます.
科学分野:
- マテリアルサイエンス 材料科学
- 固体物理 固体物理学
- 表面科学とは,地表科学である.
背景:
- 銅フタロシアニン (CuPc) は,光電子機器で使用される重要な有機半導体です.
- 薄膜構造を理解することは,デバイスの性能にとって極めて重要です.
- ZnOは広く使用されている透明な導電性酸化物基板です.
研究 の 目的:
- ZnO{1100}基板上のCuPc薄膜の構造的進化を決定する.
- 薄膜構造と厚さ,分子包装を相関させるため.
- CuPc/ZnOハイブリッドデバイスの最適化のための構造的基礎を提供するために.
主な方法:
- 牧草発生X線微分法 (GIXRD) 相互空間マッピング. 牧草発生X線微分法 (GIXRD) 相互空間マッピング. 牧草発生X線微分法 (GIXRD) 相互空間マッピング.
- 薄膜製造のための有機分子ビーム堆積 (OMBD).
- クリスタル構造と分子堆積の解析.
主要な成果:
- メタステーブルなα-CuPcポリモルフが特定されました.
- 分子堆積の厚さに依存する移行が観察されました:薄膜 (<10 nm) のヘーリングボーン,厚い膜 (>10 nm) のヘーリングボーンとブリックストーンの共存.
- モノクリニック β 角度が増加した修正されたヘーリングボーン構造を提案した.
結論:
- ZnO{1100}上のCuPcフィルムの分子堆積は厚さに依存しています.
- 提案された構造モデルは,異なる段階におけるCu−Cu距離の近さを説明する.
- この構造的な理解は,CuPc / ZnOハイブリッドシステムの光電子特性を調整するために不可欠です.
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