Electronic Materials Research Laboratory (EMRL), Key Laboratory of Education Ministry, International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China.
J Colloid Interface Sci. 2012 Dec 15;388(1):118-22. doi: 10.1016/j.jcis.2012.08.017. Epub 2012 Aug 16.
We report a novel approach for synthesizing CdS and CdSe quantum dots subsectionally sensitized double-layer ZnO nanorods for solar cells, which are comprised of CdS QDs-sensitized bottom-layer ZnO NRs and CdSe QDs-sensitized top-layer ZnO NRs. X-ray diffraction study and scanning electron microscopy analysis indicate that the solar cells of subsectionally sensitized double-layer ZnO NRs, which are the hexagonal wurtzite crystal structure, have been successfully achieved. The novel structure enlarged the range of absorbed light and enhanced the absorption intensity of light. The I-V characteristics show that the double-layer structure improved both the current density (J(sc)) and fill factor (FF) by 50%, respectively, and power conversion efficiency (η) was increased to twice in comparison with the CdS QDs-sensitized structure.
我们报告了一种用于合成 CdS 和 CdSe 量子点分段敏化双层 ZnO 纳米棒的新方法，该方法用于太阳能电池，其由 CdS QDs 敏化的底层 ZnO NRs 和 CdSe QDs 敏化的顶层 ZnO NRs 组成。X 射线衍射研究和扫描电子显微镜分析表明，成功实现了分段敏化双层 ZnO NRs 的太阳能电池，该电池具有六方纤锌矿晶体结构。这种新型结构扩大了吸收光的范围，并增强了光的吸收强度。I-V 特性表明，双层结构分别将电流密度 (J(sc)) 和填充因子 (FF) 提高了 50%，与 CdS QDs 敏化结构相比，功率转换效率 (η) 提高了一倍。
