Organic Thin-Film Solar Cells Based on Donor-Acceptor Interpenetrating Nano-Interface

Photovoltaic cells with interpenetrating interfaces between a conducting polymer layer and a fullerene layer fabricated by a solvent corrosion method have been investigated. Using a weakly dissoluble combination of a solvent and an underlayer film, we fabricated a ''semi-layered''...

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Bibliographic Details
Main Authors: Fujii, Akihiko, Hori, Tetsuro, Moritou, Hiroki, Fukuoka, Naoki, Sakamoto, Junki, Ozaki, Masanori
Format: Conference Proceeding
Language:English
Subjects:
ABSORPTION
BOSONS
CARBON
CARRIERS
CHARGE EXCHANGE
CHEMICAL REACTIONS
CORROSION
DIRECT ENERGY CONVERTERS
DISSOCIATION
EFFICIENCY
ELECTRODES
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
FULLERENES
INTERFACES
LAYERS
LEPTONS
MASSLESS PARTICLES
MATERIALS SCIENCE
MOLECULES
NANOSCIENCE AND NANOTECHNOLOGY
NONMETALS
PHOTOELECTRIC CELLS
PHOTOELECTRIC EFFECT
PHOTONS
PHOTOVOLTAIC CELLS
PHOTOVOLTAIC EFFECT
POLYMERS
QUANTUM EFFICIENCY
SOLAR CELLS
SOLAR EQUIPMENT
SORPTION
THIN FILMS
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Summary:Photovoltaic cells with interpenetrating interfaces between a conducting polymer layer and a fullerene layer fabricated by a solvent corrosion method have been investigated. Using a weakly dissoluble combination of a solvent and an underlayer film, we fabricated a ''semi-layered'' structure that was maintaining a bilayer structure and furthermore interpenetrating at the interface of the conducting polymer and the fullerene layers. In these cells, high external quantum efficiencies (EQE) were obtained. The photovoltaic properties have been interpreted by the effective absorption of incident photons around the interface of conducting polymer and fullerene, the interpenetrating fullerene / conducting polymer interface involving the efficient photo-induced charge transfer, and the short distance between the electron-generation region and electrode resulting in the enhancement of the electron collection to the electrode. In these cells, both of the efficient exciton dissociations at the interpenetrating interface and the efficient carrier transports by each continuous pathway for electrons between fullerene molecules and for holes between conducting polymers occur.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.3537899