Properties of the Nano-Thick Cr/Pt Bilayered Catalytic Layer Employed Dye Sensitized Solar Cells

Noh, Yun young; Song, Oh Sung

doi:10.3365/kjmm.2014.52.4.249

Cited by 2 publications

(1 citation statement)

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“…3) Although platinum (Pt) was mainly used in the case of existing catalyst materials, application studies of diversified materials with economy and thermal stability to substitute for the expensive Pt have been reported. 4,5) For the electrolyte which plays a role of oxidation-reduc-tion the electrons moved through the CE, there are iodide mixture, iodine dissolved in a nonprotonic solvent, LiI, 6) NaI, 7) acetonitrile, and propionitrile, 8) etc. Also, the WE consists of TCO substrate and semiconductor oxide of TiO 2 , and dye coated on the TiO 2 particles, where the TCO substrate includes indium tin oxide (ITO), fluorine doped tin oxide (FTO), aluminum doped zinc oxide (AZO), etc., and the FTO is used most frequently among them because of its excellent thermal stability, relatively low surface resistance and a high transmissivity exceeding 80%.…”

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confidence: 99%

Properties of Working Electrodes with IGZO layers in a Dye Sensitized Solar Cell

Kim¹,

Noh²,

Choi³

et al. 2016

J. Korean Ceram. Soc

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We prepared a working electrode (WE) coated with 0~50 nm-thick indium gallium zinc oxide(IGZO) by using RF sputtering to improve the energy conversion efficiency (ECE) of a dye sensitized solar cell (DSSC). Transmission electron microscope (TEM) and energy dispersive spectroscopy (EDS) were used to analyze the microstructure and composition of the IGZO layer. UV-VIS-NIR spectroscopy was used to determine the transparency of the WE with IGZO layers. A solar simulator and a potentiostat were used to confirm the photovoltaic properties of the DSSC with IGZO layer. From the results of the microstructural analysis, we were able to confirm the successful deposition of an amorphous IGZO layer with the expected thickness and composition. From the UV-VIS-NIR analysis, we were able to verify that the transparency decreased when the thickness of IGZO increased, while the transparency was over 90% for all thicknesses. The photovoltaic results show that the ECE became 4.30% with the IGZO layer compared to 3.93% without the IGZO layer. As the results show that electron mobility increased when an IGZO layer was coated on the TiO 2 layer, it is confirmed that the ECE of a DSSC can be enhanced by employing an appropriate thickness of IGZO on the TiO 2 layer.

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