【作者】 黄斌；

【导师】 徐进章； 牛海红；

【作者基本信息】 合肥工业大学 ， 控制理论与控制工程， 2018， 硕士

【摘要】 随着工业和社会的快速发展,人类对化石能源的需求量日益增加。化石能源系不可再生能源,大量的开采利用,必将导致天然能源的枯竭,威胁着人类的生存。太阳电池作为一种将太阳能转化成电能的有效器件,日益受到人们的重视,降低太阳电池成本,提高电池转化效率,增强电池稳定性已成为太阳电池研究领域的主题。本文针对传统染料敏化太阳电池(DSSCs)中光捕获效率低,电子在TiO2半导体薄膜内传输速率慢等问题,以改进染料敏化电池的光阳极为目的,采用大紫蝶的蝶翅作为生物模板,通过磁控溅射TiO2的方法制备了光子晶体,并应用于电池的光阳极中。有效解决了电池内部的散射问题,提高了电池的转化效率。具体内容:(1)我们利用大紫蛱蝶和蚊蛱蝶的翅膀作为生物模板,采用磁控溅射金属钛的方法,得到具有精细分级纳米结构的二氧化钛光子晶体。该晶体复制了生物体上亿年进化的结构信息,对光子有着极强的调控作用。(2)将制备的二氧化钛光子晶体应用于染料敏化太阳能电池光阳极的P25层(标记为Butterfly-P25),作为染料敏化太阳能电池的光散射层,得到8.7%的光电转换效率,较之传统的基于P25电池,该光电转换效率有明显提高。(3)研究了Butterfly-P25DSSCs较低的界面传输阻抗、电子迁移时间及较长的电子寿命、电子扩散系数、电子扩散长度及电荷收集效率,对于进一步提高电池效率有一定的理论意义。(4)根据太阳能电池的输出特性及DC-DC电压转换电路的工作原理,设计了基于DSSCs太阳能控制器的硬件电路,并设计了相应的软件程序,实现了太阳能电池最大功率输出,有效提高了能源利用率。更多还原

【Abstract】 With the rapid development of industry and society,the demand for fossil energy is increasing tremendously.However,the fossil energy source is not renewable energy,and the excessive exploitation and utilization will lead to the depletion of natural energy and threaten the survival of mankind.Solar cell,which is a kind of effective components for turn solar energy into electricity,is paid attention by the people day by day.There are three main purposes of solar cell research,which includes reduce the cost of solar cell,improve cell conversion efficiency and enhance the stability of the battery.Traditional dye sensitized solar cell(DSSCs)’s light capture efficiency is low and the electronic in TiO2 semiconductor thin film transmission rate is slow.In order to improve the light of the dye sensitized battery anode,we using green jade butterfly wings as biological templates,using the method of magnetron sputtering TiO2 photonic crystals,and applied to the optical anode of the battery.It can effectively solve the scattering problem in the battery and improved the conversion efficiency of the battery.Specific contents:(1)We use the wings of the Sasakia charonda and the mosquitoes butterfly as the biological template,and we use the magnetron sputtering method to obtain the titanium dioxide photonic crystal with fine hierarchical nano structure.The crystal copies the structure information of the organism for hundreds of millions of years and it has a very strong regulation effect on the photon.(2)We apply the preparation of titanium dioxide photonic crystals of dye sensitized solar cell light anode layer P25(marked as Butterfly-P25).As the light scattering dye-sensitised cells layer,it can get the photoelectric conversion efficiency of 8.7%.We compare it with the traditional based on P25 battery,and the photoelectric conversion efficiency is improved obviously.(3)The Butterfly-P25 DSSCs has low impedance interface transmission,electronic migration time and longer life.The electronic diffusion coefficient,diffusion length and charge collection efficiency to further improve the efficiency of the battery has a certain theoretical significance.(4)According to the characteristics of the solar cell and the working principle of the DC-DC voltage conversion circuit,ardware circuit of the solar controller is designed,and the corresponding software program is designed to achieve the maximum power output of the solar cell,effectively improve energy efficiency.更多还原