Department of Chemical Engineering, National Cheng Kung University , Tainan 701, Taiwan.
ACS Appl Mater Interfaces. 2013 Sep 11;5(17):8359-65. doi: 10.1021/am402265v. Epub 2013 Aug 26.
ZnO nanorod (NR)/poly(3-hexylthiophene) (P3HT) hybrid solar cells with interfacial modifications are investigated in this work. The ZnO NR arrays are modified with room-temperature (RT)-grown epitaxial ZnO shells or/and D149 dye molecules prior to the P3HT infiltration. A synergistic effect of the dual modifications on the efficiency of the ZnO NR/P3HT solar cell is observed. The open-circuit voltage and fill factor are considerable improved through the RT-grown ZnO and D149 modifications in sequence on the ZnO NR array, which brings about a 2-fold enhancement of the efficiency of the ZnO NR/P3HT solar cell. We suggested that the more suitable surface of RT-grown ZnO for D149 adsorption, the chemical compatibility of D149 and P3HT, and the elevated conduction band edge of the RT-grown ZnO/D149-modified ZnO NR array construct the superior interfacial morphology and energetics in the RT-grown ZnO/D149-modified ZnO NR/P3HT hybrid solar cell, resulting in the synergistic effect on the cell efficiency. An efficiency of 1.16% is obtained in the RT-grown ZnO/D149-modified ZnO NR/P3HT solar cell.
本工作研究了界面修饰的 ZnO 纳米棒（NR）/聚（3-己基噻吩）（P3HT）杂化太阳能电池。在 P3HT 渗透之前，通过室温（RT）生长的外延 ZnO 壳或/和 D149 染料分子对 ZnO NR 阵列进行修饰。通过 RT 生长 ZnO 和 D149 修饰顺序对 ZnO NR 阵列进行双重修饰，对 ZnO NR/P3HT 太阳能电池的效率产生协同效应。通过 RT 生长 ZnO 和 D149 修饰，开路电压和填充因子得到了显著提高，这使得 ZnO NR/P3HT 太阳能电池的效率提高了 2 倍。我们认为，RT 生长 ZnO 更适合 D149 吸附，D149 和 P3HT 的化学相容性，以及 RT 生长 ZnO/D149 修饰的 ZnO NR 阵列的导带边缘升高，在 RT 生长 ZnO/D149 修饰的 ZnO NR/P3HT 杂化太阳能电池中构建了优越的界面形态和能量学，从而对电池效率产生协同效应。在 RT 生长 ZnO/D149 修饰的 ZnO NR/P3HT 太阳能电池中获得了 1.16%的效率。
