有机光电薄膜的制备及其光学测量

摘要有机太阳能电池具有重量轻、可以采用湿法成膜的大面积制造技术、成本低、可制成柔性或特种形状器件等优点, 近年来已成为最热门的研究领域之一。作为有机光电薄膜的制作原料，PCBM是一种富勒烯衍生物，具有较好的溶解性和较高的电子迁移率；P3HT是一种3-己基噻吩的聚合物，以P3HT为电子给体材料, PCBM为电子受体材料，可以制成不同结构的共混体系太阳电池，效率已超过5%。为了探究薄膜制作工艺中影响太阳能电池转化率的影响因素，本课题拟通过学习光学测量手段，学习有机光电薄膜的旋涂制造工艺，使用激光、透镜、滤波片、斩波器、单色仪、锁相放大器、低温恒温器等仪器搭建光路，利用 Labview编程实现了计算机对系统各部件的自动控制和数据采集，探究了不同退火条件下有机光电材料中的光激发态及光生载流子的变化。本课题选用 P3HT 和 PCBM 两种有机光电材料，分别测量了 20 mg/ml的纯 P3HT以及P3HT:PCBM(1:1)掺杂溶液制作的薄膜在未退火及一系列退火温度处理后的光致发光光谱和光致吸收谱，通过观察光谱形貌的变化推测退火操作及掺杂对材料中光生载流子的影响，从而对提高有机太阳能电池的效率提供一定建议。本次课题研究，得到了如下结论：退火温度的选择要在相分离程度和复合发光强度之前寻求一种平衡。根据光致发光中发光强度、光谱展宽程度和 0-0 峰与0-1 峰的比值，光致吸收光谱以及对 P3HT/PCBM 的光致吸收中 DP 带和 LP 带的激发态寿命的研究，对于 1:1 混合而制成的 P3HT/PCBM 有机光电薄膜而言，退火温度选在 373K左右可能收到相对较好的效果。为排除偶然因素带来的误差造成的不严谨，实验结果需要做进一步验证，这为后续的研究提供了方向。 60463
.毕业论文关键词有机光电薄膜 P3HT PCBM 光致发光光致吸收
Title Fabrication of Organic Photoelectric Films and Their Optical Measurement
Abstract Organic photovoltaic (OPV) cells are light weight, flexible, and low cost, as well as can be made in large area. The research on OPV has become one of the hottest topics in recent years. Regio-regular poly (3-hexylthiophene) (RR-P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) are model materials. Using P3HT as the electron donor material and PCBM as the electron acceptor material, we can get the different structure of blends solar cell and its efficiency has exceeded 5%. In order to explore the impact factors on solar cell conversion rate during the film production process, the subject plans to explore the light excited state and the photo-generated carrier changes under different annealing conditions in organic photovoltaic materials. We use phase sensitive technology to measure photoinduced absorption spectroscopy as well photoluminescence spectroscopy of organic thin films at various temperatures. This work chooses two kinds of organic photoelectric materials named P3HT and PCBM, and measures the absorption spectra and photoluminescence spectra of the thin films made of 20 mg/ml of pure P3HT and P3HT: PCBM (1:1) mixed solution under condition of unannealed treatment and annealed treatment in a range of temperatures. In this subject research, we can obtain the following conclusions: the choice of annealing

1. 绪论 . 1

1.1 选题意义 1

1.2 光学薄膜制备及表征的一般技术 2 有机光电薄膜的制备及其光学测量:http://www.youerw.com/wuli/lunwen_65938.html