• 文献标题:   Investigation of electronic band structure and charge transfer mechanism of oxidized three-dimensional graphene as metal-free anodes material for dye sensitized solar cell application
  • 文献类型:   Article
  • 作  者:   LOEBLEIN M, BRUNO A, LOH GC, BOLKER A, SAGUY C, ANTILA L, TSANG SH, TEO EHT
  • 作者关键词:   dyesensitized solar cell dssc, threedimensional graphene 3dc, adsorption dynamic, fluorescence quenching
  • 出版物名称:   CHEMICAL PHYSICS LETTERS
  • ISSN:   0009-2614 EI 1873-4448
  • 通讯作者地址:   Nanyang Technol Univ
  • 被引频次:   3
  • DOI:   10.1016/j.cplett.2017.08.011
  • 出版年:   2017

▎ 摘  要

Dye-sensitized solar cells (DSSCs) offer an optimal trade-off between conversion-efficiency and low-cost fabrication. However, since all its electrodes need to fulfill stringent work-function requirements, its materials have remained unchanged since DSSC's first report early-90s. Here we describe a new material, oxidized-three-dimensional-graphene (o-3D-C), with a band gap of 0.2 eV and suitable electronic band-structure as alternative metal-free material for DSSCs-anodes. o-3D-C/dye-complex has a strong chemical bonding via carboxylic-group chemisorption with full saturation after 12 sec at capacity of similar to 450 mg/g (600x faster and 7x higher than optimized metal surfaces). Furthermore, fluorescence quenching of life-time by 28-35% was measured demonstrating charge-transfer from dye to o-3D-C. (C) 2017 Elsevier B.V. All rights reserved.