Loading…
A reliable TiO2 nanotube membrane transfer method and its application in photovoltaic devices
In this work we present a highly reproducible method to fabricate front-illuminated TiO2 nanotube-based dye-sensitized solar-cell. The well oriented nature of the nanotube arrays ensures favorable electron percolation pathways for charge transfer between interfaces. Our two-step anodization approach...
Saved in:
Published in: | Electrochimica acta 2012-02, Vol.62, p.116-123 |
---|---|
Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | In this work we present a highly reproducible method to fabricate front-illuminated TiO2 nanotube-based dye-sensitized solar-cell. The well oriented nature of the nanotube arrays ensures favorable electron percolation pathways for charge transfer between interfaces. Our two-step anodization approach allows for a nearly 100% reliable production of uniform films with a greater flexibility in the thickness of the nanotube membranes suitable for both liquid and solid electrolyte dye-sensitized solar-cells (DSCs). Large area nanotube membranes fabricated by this method were successfully detached and transferred onto fluorine-doped tin oxide (FTO) and other substrates without crack formation. In contrast to earlier methods, the method presented here does not require steps that may damage the nanotube membrane quality such as prolonged ultrasonication or acid treatment. We systematically study the current-time profile and analyze the detachment mechanism. Front-illuminated nanotube-based dye-sensitized solar-cells using this method reach an efficiency of 6.3% with liquid electrolytes (of which at least 6.1% originate from the transferred membrane) and 1.9% when using the solid state hole conductor CuSCN under AM1.5 1 sun illumination. |
---|---|
ISSN: | 0013-4686 1873-3859 |
DOI: | 10.1016/j.electacta.2011.11.118 |