Proceedings of 6th International Conference on Hybrid and Organic Photovoltaics (HOPV14)
Publication date: 1st March 2014
Towards the roll-to-roll low-cost manufacture of dye-sensitized solar cells (DSSCs), use of transparent plastic conductive substrates is essential for module making. Low-temperature coating method is a pre-requisite to fabricate a plastic photoelectrode. Here, robust flexibility of photoelectrode ensures high mechanical stability of the cells and modules. In this study, we have developed a new TiO2 coating method for low temperature coating, which provides a simple formation process and realizes stable characteristic of TiO2 film as photoelectrode. The basic process of low-temperature photoelectrode fabrication has been reported previously [1,2]. A single bar coating of the conventional low temperature paste usually produces a film with a thickness of only 5 μm while DSSCs made on glass substrate capable of high efficiency employ a TiO2 layer with 10–15 μm film thickness. There has been an issue for film thickness adjustment. There have been reported two types of TiO2 paste coating. One is a squeegee coating, which is a simple one-step process. The other is a spray coating combined with microwave treatment method, which produces a relatively tough photoelectrode [3].
Here we have developed a low temperature TiO2 spray coating method to produce a tough TiO2 electrode of various thicknesses. It only requires heating under 150℃to dry and does not require additional steps like a microwave treatment, for example. Characteristics of the low temperature TiO2 spray coating are listed below:
1. TiO2 particle necking by dehydration reaction partly occurs during particle blowing from a spray nozzle to a substrate.
2. After TiO2 particles attachment on the ITO surface of substrate was completed, the surface particles never flow out, which is different from squeegee coating.
3. Film thickness is easily controlled by the number of coating.
4. Coating TiO2 on a large area, for module fabrication, etc., is easily completed.
In this presentation, we will discuss the advantage of low-temperature spray coating method and photoelectrochemical characterization of the DSSC photoelectrode.
[1] T.Miyasaka, Y.Kijitori, and M.Ikegami, Electrochemistry., 75, 2-12(2007). [2] Y.Kijitori, M.Ikegami, and T.Miyasaka, Chem. Lett., 36, 190-191(2007). [3] S.Uchida, M.Tomiha, H.Takizawa, M.Kawaraya, J.Photochem.Photobiol.A:chme., 164,93-96(2004).
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.