Papers by Author: De Feng Huang

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Authors: Zhi Qiang Hu, De Feng Huang, Xian Qing Liu, Hong Gao, Hong Shun Hao
Abstract: Liquid electrolyte for dye-sensitized solar cells (DSSCs) was prepared by using the mixture of sulfolane and 3-methoxypropionitrile as a solvent, 4-tert-butylpyridine as an additive. The influences of sulfolane on electrolyte conductivity, photoelectric performances and the DSSCs stability were investigated. The results indicated that when the ratio of 3-methoxypropionitrile to sulfolane achieves 3:2, the cell showed the optimal photoelectric properties and stability, and the short-circuit current and photoelectric conversion efficiency achieved 7.58mA/cm2 and 2.79%, respectively.
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Authors: Zhi Qiang Hu, Xian Qing Liu, De Feng Huang, Hong Gao, Jing Xiao Liu
Abstract: In this article, spinel–type NiCr2O4 Nanocrystalline were prepared by the citrate method. After doping it into P25 (degussa, TiO2), NiCr2O4/TiO2 thin film photoanode were prepared by screen printing process on the surface of Fluorine Tin Oxide (FTO) Glass. And then they were assembled into Dye sensitized TiO2 Nanocrystalline solar cells (DSSC). The as–prepared NiCr2O4 powders were characterized by differential thermal analysis/thermo gravimetry (DTA/TG), X–ray diffraction (XRD) and ultraviolet visible (Uv–Vis) diffuse spectra. The properties of the solar cells were investigated by Solar Simular and Keithley Sourcemeter, respectively. The results showed that the grain size of the NiCr2O4 particles obtained at optimum synthesis temperature (1000 °C) was about 40.23 nm and the band gap was 1.8ev. The cell properties increased when the doping amount of NiCr2O4 was 1wt%. The open–circuit voltage (Voc) of Dye Sensitized TiO2 Nanocrystalline Solar Cell was from 0.71V up to 0.73V, The short–circuit photocurrent (Jsc) of DSSC increased from 5.21mA·cm-2 to 6.95mA·cm-2. The photoelectric conversion efficiency (η) was from 2.40% up to 3.14%, which was 30.8% higher than the pure TiO2 thin film photoanode.
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