Naseem Sajid, Gevers Bianca R, Labuschagné Frederick J W J, Leuteritz Andreas
Processing Department, Leibniz Institute of Polymer Research Dresden, 01069 Dresden, Germany.
Institute of Materials Science, Technical University (TU) Dresden, 01069 Dresden, Germany.
Materials (Basel). 2020 Oct 1;13(19):4384. doi: 10.3390/ma13194384.
This work highlights the use of Fe-modified MgAl-layered double hydroxides (LDHs) to replace dye and semiconductor complexes in dye-sensitized solar cells (DSSCs), forming a layered double hydroxide solar cell (LDHSC). For this purpose, a MgAl-LDH and a Fe-modified MgAl LDH were prepared. X-ray diffraction spectroscopy (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX) spectroscopy were used to analyze the structural properties, morphology, and success of the Fe-modification of the synthesized LDHs. Ultraviolet-visible (UV-Vis) absorption spectroscopy was used to analyze the photoactive behavior of these LDHs and compare it to that of TiO and dye-sensitized TiO. Current-voltage (I-V) solar simulation was used to determine the fill factor (FF), open circuit voltage (V), short circuit current (I), and efficiency of the LDHSCs. It was shown that the MgFeAl-LDH can act as a simultaneous photoabsorber and charge separator, effectively replacing the dye and semiconductor complex in DSSCs and yielding an efficiency of 1.56%.
这项工作突出了使用铁改性的镁铝层状双氢氧化物（LDHs）来替代染料敏化太阳能电池（DSSCs）中的染料和半导体配合物，从而形成层状双氢氧化物太阳能电池（LDHSC）。为此，制备了一种镁铝层状双氢氧化物（MgAl-LDH）和一种铁改性的镁铝层状双氢氧化物（Fe-modified MgAl LDH）。利用X射线衍射光谱（XRD）、扫描电子显微镜（SEM）和能量色散X射线（EDX）光谱对合成的层状双氢氧化物的结构特性、形态以及铁改性的成功情况进行了分析。采用紫外可见（UV-Vis）吸收光谱分析这些层状双氢氧化物的光活性行为，并将其与TiO以及染料敏化TiO的光活性行为进行比较。利用电流-电压（I-V）太阳能模拟来确定层状双氢氧化物太阳能电池的填充因子（FF）、开路电压（V）、短路电流（I）和效率。结果表明，MgFeAl-LDH可以同时作为光吸收体和电荷分离器，有效替代染料敏化太阳能电池中的染料和半导体配合物，效率达到1.56%。
