Huang Yin-Rou, Huang Tzu-Wei, Wang Tzu-Hui, Tsai Yu-Chen
Department of Chemical Engineering, National Chung Hsing University, 250, Kuo Kuang Road, Taichung 402, Taiwan.
Department of Chemical Engineering, National Chung Hsing University, 250, Kuo Kuang Road, Taichung 402, Taiwan.
J Colloid Interface Sci. 2014 Aug 15;428:128-32. doi: 10.1016/j.jcis.2014.04.042. Epub 2014 May 8.
Dye-sensitized solar cells (DSSCs) are fabricated with gallium nitride-titanium dioxide (GaN-TiO2) composite photoelectrodes to enhance the power conversion efficiency. The value of power conversion efficiency increases with the incorporation of GaN in TiO2 matrix and reaches a maximum at 0.05 wt% GaN. Internal resistance in the DSSC is characterized by electrochemical impedance spectroscopy (EIS). From the EIS of electrolyte/dye/GaN-TiO2 interface resistances under illumination and in the dark, a decrease in the charge transfer resistance and an increase in the charge recombination resistance of the DSSCs are obtained after the inclusion of GaN (0.01-0.05 wt%) in the TiO2 matrix. The power conversion efficiency of the DSSC based on the GaN (0.05 wt%)-TiO2 composite photoelectrode is enhanced by ∼61% in comparison with a pristine TiO2 photoelectrode.
采用氮化镓-二氧化钛（GaN-TiO2）复合光电极制备了染料敏化太阳能电池（DSSC），以提高功率转换效率。功率转换效率值随着GaN掺入TiO2基体而增加，并在GaN含量为0.05 wt%时达到最大值。通过电化学阻抗谱（EIS）对DSSC的内阻进行表征。从光照和黑暗条件下电解质/染料/GaN-TiO2界面电阻的EIS可知，在TiO2基体中加入GaN（0.01-0.05 wt%）后，DSSC的电荷转移电阻降低，电荷复合电阻增加。与原始TiO2光电极相比，基于GaN（0.05 wt%）-TiO2复合光电极的DSSC的功率转换效率提高了约61%。
