What is it about?
A hydrochloric acid treatment was performed to modify the surface of TiO2 nanotube arrays for improving the photovoltaic performance of dye-sensitized solar cells. HCl treatment does not change the morphology and crystallographic structure of the nanotube arrays, but it results in more hydroxyl groups on the TiO2 surface for dye adsorption and a higher quantum yield of electron injection. A major performance enhancement was found.
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Why is it important?
Surface modification can improve the efficiency of DSSC.
Perspectives
This was an interesting work using TiO2 nanotube arrays for DSSCs. Surface treatment helped to increase the efficiency.
Professor Peter D. Lund
Aalto University
Read the Original
This page is a summary of: Photovoltaic properties of dye sensitised solar cells using TiO2 nanotube arrays for photoanodes: Role of hydrochloric acid treatment, Applied Surface Science, November 2015, Elsevier,
DOI: 10.1016/j.apsusc.2015.07.102.
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