Electrical and Computer Engineering, McGill University, Montreal, Quebec H3A 2T8, Canada.
Nanoscale. 2012 Apr 28;4(9):2926-30. doi: 10.1039/c2nr30084b. Epub 2012 Mar 29.
Electrical and thermal properties of a carbon nanotube (CNT)/multiferroic BiFeO(3) (BFO)/Pt photovoltaic heterojunction are investigated for the first time. Enhanced photovoltaic properties (J(sc)≈ 2.1 μA cm(-2) and V(oc)≈ 0.47 V), as compared to the traditional polycrystalline BFO with indium tin oxide (ITO) as the top electrode, are observed due to the unique properties of CNT. An equivalent electrical and thermal model is constructed based on the energy band diagram of the CNT/BFO/Pt heterojunction for the first time and the carriers' transportation behavior is depicted theoretically. The influence of CdSe quantum dots (QDs) sensitization on the photovoltaic properties is presented, and a clear improvement of ~4 fold in photocurrent density is observed.
首次研究了碳纳米管（CNT）/多铁性 BiFeO3（BFO）/Pt 光伏异质结的电学和热学性质。与传统的具有氧化铟锡（ITO）作为顶电极的多晶 BFO 相比，由于 CNT 的独特性质，观察到增强的光伏性能（J(sc)≈2.1μA cm(-2)和 V(oc)≈0.47V）。首次基于 CNT/BFO/Pt 异质结的能带图构建了等效的电学和热学模型，并从理论上描述了载流子的输运行为。还介绍了 CdSe 量子点（QDs）敏化对光伏性能的影响，观察到光电流密度明显提高了~4 倍。
