Issue 14, 2014

Ti thin film towards the growth of crystalline-TiO2 nanostructures: stepped light-induced transient measurements of photocurrent and photovoltage in dye sensitized solar cell

Abstract

Highly dense and well-defined TiO2 nanoflowers (NFs) were grown by the hydrothermal process on a titanium (Ti) coated FTO substrate. The Ti layer with a thickness of ~500–600 nm was deposited on FTO at room temperature with a pressure of ~5 mTorr using a Ti-source through RF magnetic sputtering. The unique TiO2 NF thin film substrate was applied as a photoanode for the fabrication of a dye sensitized solar cell (DSSCs). Each NF was made of uniform clover leaf-like petals of an average diameter of ~80–100 nm. The synthesized TiO2 NFs possessed a pure anatase phase with good crystal quality. The fabricated DSSC with TiO2 NF thin film photoanode accomplished a reasonably good overall solar-to-electricity conversion efficiency (η) of ~3.64% with a high short circuit photocurrent density (JSC) of ~9.6 mA cm−2. The improved performance and photocurrent density were explained by the charge transport time, diffusion coefficient, diffusion length and charge collection efficiency of the fabricated DSSC.

Graphical abstract: Ti thin film towards the growth of crystalline-TiO2 nanostructures: stepped light-induced transient measurements of photocurrent and photovoltage in dye sensitized solar cell

Article information

Article type
Paper
Submitted
21 Dec 2013
Accepted
05 Jan 2014
First published
09 Jan 2014

CrystEngComm, 2014,16, 3020-3028

Ti thin film towards the growth of crystalline-TiO2 nanostructures: stepped light-induced transient measurements of photocurrent and photovoltage in dye sensitized solar cell

S. Ameen, M. S. Akhtar, H. Seo and H. Shin, CrystEngComm, 2014, 16, 3020 DOI: 10.1039/C3CE42594K

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