摘要
通过水热法制备了不同质量分数(0%,0.5%,1.0%和1.5%)的Al 3+掺杂ZnO纳米棒,扫描电镜(SEM)、X射线衍射(XRD)、紫外-可见(UV-vis)吸收光谱等测试结果表明,通过这种方法得到了较为规整的ZnO纳米阵列,结晶良好、具有明显的c轴生长取向;掺杂浓度的增加对产物的形貌和晶体结构产生了明显的影响。通过瞬态光谱和面电阻测试发现,Al 3+掺杂提高了ZnO传导电子的能力。将Al 3+掺杂的ZnO纳米棒同时作为电极与电子传输层,应用于有机太阳能电池器件中,在低浓度(0.5at.%)掺杂时得到最佳的器件性能,相比于未掺杂的ZnO纳米棒,短路电流提高了30%,光电转化效率提高了50%。
We fabricated the ZnO nanorods with different Al3＋-doped concentrations of 0 %, 0.5 %, 1.0 % and 1.5 %, respectively. The morphology and the crystalline of/M-doped ZnO nanorods are investigated by using scanning electron microscope （SEM） and X-ray diffraction （XRD）. The optical and electrical properties are researched by ultraviolet-visible （UV-VIS） absorption spectroscopy,time-resolved photo- luminescence （TRPL） spectroscopy and sheet resistance. The analysis indicates that the ZnO nanorods are orderly arrayed and have good crystallinity. As the Al3＋ doped concentration increasing,the conductivity of ZnO is improved and the electron transfer between donor and acceptor becomes faster. Finally, Al-doped ZnO nanorods are incorporated in the organic photovoltaic devices as both cathode and electron conductive layer. The optimized device （at lower doping of 0.5%） shows 30% higher Jsc and 50% higher photoelectric conversion efficiency （PCE） compared with the device without Al doping.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2012年第9期1786-1791,共6页
Journal of Optoelectronics·Laser
基金
天津市科技创新体系及条件平台建设计划(10SYSYJC28100)
天津市应用基础及前沿技术研究计划(青年基金项目12JCQNJC01300)
天津市高等学校科技发展基金计划(20100723)资助项目
