中文摘要：

为了提高聚合物太阳能电池的能量转换效率,选择水溶性V2O5作为阳极缓冲层制备了结构为ITO/TiO2/P3HT∶PCBM/V2O5/Ag的电池器件。V2O5纳米线采用水热法制成。研究了V2O5浓度和退火温度对有机太阳能电池器件性能的影响。实验结果表明:V2O5质量浓度为300μg/mL的器件的效率最高,达到了2.35%,远大于无阳极缓冲层器件的效率0.14%;80℃是V2O5退火的最佳温度。与热沉积方法相比,可溶液处理的V2O5作为阳极缓冲层具有工艺简单且可大面积制备的优点,电池的效率得到了较大幅度的提高。

英文摘要：

In order to improve the power conversion efficiency of the organic solar cell,a solutionprocessed vanadium pentoxide was used as an anode buffer layer.The solution-processed V 2 O 5 nanowire was synthesised by using hydrothermal method.The device structure was ITO/ TiO 2/ P3HT∶ PCBM/ V 2 O 5/ Ag.The influence of V 2 O 5 concentrations and annealing temperature on the device performance was investigated.The experimental results indicate that the power conversion efficiency(PCE of 2.35%) is the highest when the V 2 O 5 mass concentration is 300 μg/ mL,much higher than that without anode buffer(PCE of only 0.14%).Moreover,80 ℃ is the relative optimum annealing temperature of V 2 O 5.Compared with thermal evaporation method,the solution-processed approach is relatively simple,attractive for mass production and greatly valuable for applications.