Light degradation stability of a - si : h films 氢化非晶硅薄膜光衰退稳定性的影响因素
However , it is not found that ceo2 nanoparticles were employed at light degradation catalysis aspect 但是,目前还未见到将纳米二氧化铈应用于光降解方面的研究。
Finally , the effect of boron and interstitial oxygen on the light degradation are studied 作为本文的主要内容,对影响太阳电池光衰减的主要因素?硼、氧进行了研究。
In order to avoid light degradation , low interstitial oxygen content and low boron concentration b - doped p - type cz - si material should be used , for example , the resistivity can be from 5 - 10 . cm , the efficiency has reached to 22 . 0 % 上述研究工作表明:为了避免光衰减,提高硅片少子寿命,应该选择低氧浓度的硅片,并降低硼的掺杂浓度,即:使用高阻材料制作太阳电池。
In this part , the issues and mechanism of light degradation of b - doped p - type cz - si solar cells are introduced firstly , it was clarified that boron and interstitial oxygen are major components of defect center for light degradation of b - doped cz - si solar cells . then in the experiment the b - doped cz - si is chosen as the substrates and annealled at different temperature 文中首先介绍了掺硼单晶硅太阳电池的光照衰减问题及衰减机制,然后以p型掺硼单晶硅为实验样品,经过不同温度的热处理,对影响光衰减的主要因素硼、氧进行了研究。
In order to study the photochemical activity of the product further , this dissertation , taking methyl orange as a deputy of organism , has studied the relation between the concentration of the organism and the reactive time during the process of light degradation , and , on the basis of the relation , the kinetic process of the photocatalytic degradation was achieved by the treatment on the curve of the organism concentration to the reactive time : zero order reaction of the high organism concentration , first order reaction of the middle organism concentration , second order reaction of the low organism concentration 在产品对有机物的光降解方面,本文主要以产品光降解甲基橙溶液为例,研究了光降解过程中,有机物浓度与时间的关系。并在此基础上,对有机物浓度与时间的曲线进行了动力学处理,得出产品光降解甲基橙的动力学过程分为三步,摘要即:高浓度时的零级反应、中等浓度时的二级反应和低浓度时的一级反应。