Sb₂S₃ quantum dot is prepared as the optical absorber on the ZnO nanorod films to fabricate high-efficiency quantum dot–sensitized solar cells. The band energy of the solar cells is modulated by the different concentration of Cu-doping. Meanwhile, the optical absorption spectra and photoluminescence spectra of different ZnO/Sb₂S₃ photoelectrodes are investigated, which had exhibited the enhancement on optical absorption property and charge separation property by Cu-doping process. The charge transfer properties of the solar cells had also been enhanced by the modulation on band energy structure by different Cu-doping concentration. With the relatively larger optical absorption edge, the 0.3 mM Cu–doped ZnO/Sb₂S₃ quantum dot–sensitized solar cells have exhibited optimal band energy structure for charge transfer, which can obtain higher current density to enhance the photovoltaic power conversion efficiency from 2.55 to 3.14%.

在ZnO纳米棒薄膜上制备Sb ₂ S ₃量子点作为光吸收剂，以制备高效的量子点敏化太阳能电池。通过不同浓度的铜掺杂来调制太阳能电池的带能。同时，研究了不同ZnO / Sb ₂ S ₃光电极的光吸收光谱和光致发光光谱，这些光电极通过Cu掺杂工艺表现出光吸收性能和电荷分离性能的增强。通过不同的Cu掺杂浓度对带能结构的调制也增强了太阳能电池的电荷转移性能。随着相对较大的光吸收边缘，0.3 mM的Cu掺杂的ZnO / Sb ₂S ₃量子点敏化太阳能电池具有用于电荷转移的最佳能带结构，可以获得更高的电流密度，从而将光伏发电的转换效率从2.55％提高到3.14％。