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2013•Molecular Crystals and Liquid CrystalsRequires access

Improved Open-Circuit Voltage of Dye-Sensitized Solar Cells with LiNO3-Incorporated Titanium Dioxides

Jong Tae Kim, Su Kyung Park, Cheon Su Kang, Wook Hyun Kim, Yoon Soo Han

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Abstract

The influence of LiNO3incorporation onto TiO2electrodes on the performance of dye-sensitized solar cells (DSSCs) was studied. LiNO3-incorporated TiO2electrodes were prepared by a dip coating process and the resulting electrodes were applied to DSSCs. Open circuit voltage (Voc ) of DSSC with a LiNO3-modified TiO2layer was averagely improved by over 24% compared to that of a reference device with bare TiO2. The conduction band edge shift of TiO2to a negative direction, arising from the formation of a surface dipole, accounted for the improvement in Voc .

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What this paper is about

The influence of LiNO3incorporation onto TiO2electrodes on the performance of dye-sensitized solar cells (DSSCs) was studied. LiNO3-incorporated TiO2electrodes were prepared by a dip coating process and the resulting electrodes were applied to DSSCs. Open circuit voltage (Voc ) of DSSC with a LiNO3-modified TiO2layer was averagely improved by over 24% compared to that of a reference device with bare TiO2. The conduction band edge shift of TiO2to a negative direction, arising from the formation of a surface dipole, accounted for the improvement in Voc .

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Available abstract

The influence of LiNO3incorporation onto TiO2electrodes on the performance of dye-sensitized solar cells (DSSCs) was studied. LiNO3-incorporated TiO2electrodes were prepared by a dip coating process and the resulting electrodes were applied to DSSCs. Open circuit voltage (Voc ) of DSSC with a LiNO3-modified TiO2layer was averagely improved by over 24% compared to that of a reference device with bare TiO2. The conduction band edge shift of TiO2to a negative direction, arising from the formation of a surface dipole, accounted for the improvement in Voc .

Key concepts: Dye-sensitized solar cell, Open-circuit voltage, Materials science, Electrode, Short circuit, Conduction band, Titanium, Optoelectronics

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