468083 Study of Electron Transport Mechanism in Dye-Sensitized Solar Cell with the Effect of Morphology, Crystalline Structure and Electron Mobility

Monday, November 14, 2016: 10:14 AM
Golden Gate 5 (Hilton San Francisco Union Square)
Yerkin Shabdan1, Blake Hanford2, Amirkhan Temirbayev1, Kadyrjan Dikhanbayev1 and Nurxat Nuraje3, (1)Al-Farabi Kazakh National University, Almaty, Kazakhstan, (2)Texas Tech University, Lubbock, TX, (3)Chemical Engineering, Texas Tech University, Lubbock, TX

Dye-sensitized solar cells (DSSCs) are one of the most promising developments in photovoltaic devices. To obtain high efficiency DSSCs, extensive research has been carried out to consider the effect of dyes, electrolytes, and alternatives to titania.

The performance of photovoltaic devices could be improved by using nano-composites which can provide high electron mobility and efficiently collect photo-generated electrons through a better understanding of their fundamentals. One-dimensional nanomaterials including Single-walled carbon nanotubes (CNT) and metals, such as gold and silver, exhibit very high electron mobility.

However, the incorporation of such materials into DSSCs for efficient photovoltaic performance is still challenging. Also the fundamental of the above system is not well understood.

This study focuses on the synthesis of core-shell nano-composites made of TiO2­­, various metals, and CNTs. Several fabrication techniques including chemical vapor deposition, electrochemical deposition, spin-coating, and electro spinning were applied to create various nanostructured composite materials such as one dimensional nanorods, nanowires, and nanotubes. Designing core-shell nanostructures of TiO2in DSSC help us investigate and compare electron transfer properties of the different core materials.

The Mechanistic study of the DSSCs were carried out by using the following techniques: UV-vis scoptrocopy, time-resolved photoluminescence spectroscopy, impedance analyzer in combination. In addition, characterization methods such as TEM, SEM, XRD, and Raman spectroscopy were used. These studies will help to better understand the principle of DSSCs and better design efficient DSSC devices.

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See more of this Session: Nanostructured/Thin Film Photovoltaics
See more of this Group/Topical: Materials Engineering and Sciences Division