title: Electrical and thermal properties of a carbon nanotube/polycrystalline BiFeO3/Pt photovoltaic heterojunction with CdSe quantum dots sensitization.
abstract: 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.
authors.affiliation: Electrical and Computer Engineering, McGill University, Montreal, Quebec H3A 2T8, Canada. zangyythu@gmail.com
authors.forename: Yongyuan
authors.initials: Y
authors.lastname: Zang
authors.forename: Dan
authors.initials: D
authors.lastname: Xie
authors.forename: Yu
authors.initials: Y
authors.lastname: Chen
authors.forename: Xiao
authors.initials: X
authors.lastname: Wu
authors.forename: Tianling
authors.initials: T
authors.lastname: Ren
authors.forename: Jinquan
authors.initials: J
authors.lastname: Wei
authors.forename: Hongwei
authors.initials: H
authors.lastname: Zhu
authors.forename: David
authors.initials: D
authors.lastname: Plant
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D019187:Cadmium Compounds / Q000737:chemistry*; D004560:Electricity; D004566:Electrodes; D005290:Ferric Compounds / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010084:Oxidation-Reduction; D010984:Platinum / Q000737:chemistry*; D045663:Quantum Dots; D018036:Selenium Compounds / Q000737:chemistry*; D012993:Solar Energy
chemical_list: D019187:Cadmium Compounds; D005290:Ferric Compounds; D037742:Nanotubes, Carbon; D018036:Selenium Compounds; D010984:Platinum; C058667:cadmium selenide; D001729:Bismuth