Grignard Metathesis (GRIM) ポリメリゼーションによるポリー ((3- ((4-n-オクチル) -フェニルチオフェン) の全ポリマー光電装置
Thomas W Holcombe1, Claire H Woo, David F J Kavulak
1Department of Chemistry, University of California, Berkeley, California 94720-1460, USA.
Journal of the American Chemical Society
|September 18, 2009
まとめ
Grignard Metathesis (GRIM) で合成されたポリ[3-(4-n-オクチル) -フェニルチオフェン] (POPT) は,有機光伏 (OPV) の有望性を示しています. POPTベースのデバイスは,高効率を達成し,全ポリマー太陽電池の同様の材料の性能を上回ります.
科学分野:
- 材料科学 材料科学とは
- オーガニック・エレクトロニクス
- 光伏は,太陽光発電である.
背景:
- 有機太陽光発電 (OPV) は,従来のシリコンベースの太陽電池に有望な代替品を提供します.
- 効率的で安定した有機半導体材料の開発は,OPV技術の進歩に不可欠です.
- ポリ ((3-アルキルチオフェンは,OPVにおけるその可能性について広く研究されているが,その性能は限られている可能性がある.
研究 の 目的:
- Grignard Metathesis (GRIM) ポリメリゼーションを使用して,ポリ[3-(4-n-オクチル) -フェニルチオフェン] (POPT) を合成し,特徴づけること.
- GRIM POPTの電子,光学,および有機光伏アプリケーションの処理特性を評価する.
- POPTベースのOPVの性能を他の有機半導体を使用する最先端のデバイスと比較するために.
主な方法:
- Grignard Metathesis (GRIM) ポリメリゼーションがPOPT合成に使用されました.
- 空間電荷の限られた電流とフィールド効果トランジスタの測定は,穴の移動性を決定するために使用されました.
- 薄膜はスピンキャスティングによって製造され,その光学特性 (バンドギャップ) が分析されました.
- 大量ヘテロジャンクション (BHJ) と2層有機光伏装置が製造され,テストされました.
主要な成果:
- GRIM POPTは,OPVにとって有利な電子的,光学的,処理特性を持っています.
- POPTは,穴の移動性を1×10−4cm2/Vs (SCC) と0.05cm2/Vs (FET) と示した.
- POPT薄膜は1.8 eVのバンドギャップを示し,PC(61) BM:POPT BHJデバイスは3.1%のピーク効率を達成しました.
- POPTとCNPPVを使用した全ポリマー二重層OPVは2.0%の効率を達成し,P3HT/CNPPV装置 (0.93%の効率) を上回った.
結論:
- GRIM POPTは,高性能オーガニック・フォトボルタイクに適した材料です.
- POPTベースのデバイスは,特に全ポリマー構成では,競争力のある効率性を示しています.
- この研究は,OPVアプリケーションにおけるP3HTの代替品としてのPOPTの可能性を強調し,エネルギーレベルアライナメントに基づく材料選択に関する以前の仮定に異議を唱える.
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