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Issue 38, 2015
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Effect of solvents on the growth of TiO2 nanorods and their perovskite solar cells

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Abstract

TiO2 nanorods were synthesized by hydrothermal methods with ethanol–HCl and water–HCl solutions, respectively, and CH3NH3PbI3−xClx perovskite solar cells based on them were fabricated. The power conversion efficiency (PCE) of the best solar cells based on TiO2 nanorods with water–HCl solution is higher than that with ethanol–HCl solution. The dimensions, morphology, optical properties, and photogenerated charge behavior of the two kinds of samples were investigated. The results indicate that the better performance of solar cells based on TiO2 nanorods with water–HCl solution than those with ethanol–HCl solution could be attributed to their special orientation, high conductivity, improved morphology, good optical properties, fast charge transfer and reduced charge recombination. A PCE of 11.8% was achieved using TiO2 nanorods with water–HCl solution, which is the highest among the reported TiO2 nanorod based cells.

Graphical abstract: Effect of solvents on the growth of TiO2 nanorods and their perovskite solar cells

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Publication details

The article was received on 25 May 2015, accepted on 14 Aug 2015 and first published on 17 Aug 2015


Article type: Paper
DOI: 10.1039/C5TA03765D
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Citation: J. Mater. Chem. A, 2015,3, 19476-19482
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    Effect of solvents on the growth of TiO2 nanorods and their perovskite solar cells

    J. Li, Z. Zhang, H. Gao, Y. Zhang and Y. Mao, J. Mater. Chem. A, 2015, 3, 19476
    DOI: 10.1039/C5TA03765D

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