AlxGa1—xAs／GaAs太阳电池减反射膜的研究

以太阳电池的短路电流积分表达式为依据，应用减反射膜的光学原理，对具有阳极氧化、ＳｉＯ和ＳｉＯ２三种减反射膜的ＡｌｘＧａ１－２Ａｓ／ＧａＡｓ太阳电池分别进行了反射光谱、短路电流、开路电压的实验测试。研究表明，阳极氧化膜、ＳｉＯ膜具有良好的减反射性能，而ＳｉＯ２膜的减反射性能较差。     

硅基薄膜叠层太阳能电池减反射膜的效果评估

减反射膜涂覆在硅基薄膜太阳能电池的前板玻璃表面,通过减少对太阳光的反射而提高光电转换效率;然而,减反射膜的热固化工艺会影响减反射膜的最终效果,而无法区分减反射作用和热固化过程对电池效率的影响。文章设计了一种简单有效的评估测试方法,即将未镀减反膜的玻璃和镀减反膜的玻璃分别与电池叠放,来测试电池的量子效率和电流-电压性能,排除热固化工艺对电池性能的影响,以了解减反射膜对电池的作用效果。     

光伏遭遇“减反射门”

<正>太阳能光伏组件用减反射膜玻璃(AR玻璃)是指通过涂覆或蚀刻的方法在光伏组件用玻璃(通常为超白压花玻璃)表面镀制一层减反射薄膜,可使镀膜玻璃在太阳电池的光谱响应范围内的太阳光反射比降低,透射比升高,从而提高光伏组件的光电转化效率。减反射膜是应用最广、产量最大的一种光学薄膜。但是,最近却有一点尴尬。8月27日,国家质检总局发布了太阳能光     

减反射膜玻璃对光伏组件光增益的分析

完善光伏组件光学模型,并根据模型理论模拟减反射膜玻璃和普通玻璃对光伏组件光增益的大小,通过分析发现当太阳光垂直光伏组件入射时,普通玻璃封装后,单晶硅太阳电池封装后光增益小于多晶硅太阳电池,减反射玻璃对多晶硅太阳电池片的光增益大于对单晶硅太阳电池的光增益。     

常压化学汽相沉积TiOx纳米光学薄膜及其用于太阳电池减反射膜的研究

报道了用常压化学汽相沉积（APCVD）工艺制备TiOx纳米光学薄膜的研究结果，讨论了衬底温度对薄膜结构及折射率的影响，实验验证了太阳电池对光学减反射膜的理论要求，优化了工艺条件，制备的TiOx纳米光学薄膜性能稳定，大面积颜色均匀一致。采用该工艺制备的TiOx减反射膜能使单晶硅太阳电池光电转换效率平均增加10％。     

以sol—gel技术制备太阳能减反射涂层

着重介绍了sol-gel(熔胶-凝胶)技术大面积、工业化制备高硬度、耐摩擦太阳能减反射涂层的意义、原理和方法,并从其作为商品工业化的角度,介绍了SiO2单层膜系和TiO2-SiO2双层膜系太阳能减反射涂层生产工艺、设备及环境要求等,给出了部分商业化减反射涂层的性能特征等技术参数.     

丹麦与德国太阳能选择性涂层考察

2002年10月,我和桑达公司总经理韩建功先生用了12天时间先后对丹麦、德国的太阳能选择性吸收涂层的生产技术情况进行了考察。此次主要考察了5家公司,分别是丹麦的SUNARC公司、BATEC公司、德国的INTERPANE、TINOX、ALANOD公司。其中除SUNARC公司生产玻璃减反射涂层外,其余4家公司都是生产吸收涂层的。现分别简要介绍如下:丹麦SUNARC公司的Orssen先生去年曾访问过北京太阳能研究所,并介绍过玻璃减反射涂层的技术情况。此次访问该公司亲眼见到减反射涂层的生产过程,生产工艺采用溶液浸泡腐蚀的方法,每片玻璃为2m×3m,每次10…     

黑镍涂层的制备与光学性能研究

研究了以玻璃为基材,用电镀的方式制备Black Nickel-Cu-Glass选择性吸收涂层的方法,该涂层获得了α=0.93-0.95,ε=0.05-0.06,α/ε=15的光学性能,论述了制备条件和膜层厚度及基材表面光洁度对光学性能的影响。由实验结果得出双层黑镍的最佳厚度为0.048-0.063mg/cm^3,意志支黑镍的最佳厚度为0.040-0.052mg/cm^2以及涂层组成的主要成分的比例范围,用图示法详细说明了镀液温度对涂层光学性能的影响。     

SiON／SiN太阳电池双层减反膜的性能研究

报道了用电子回旋共振化学气相沉淀积技术淀积ＳｉＯＮ／ＳｉＮ双层硅太阳电池减反膜的实验研究。用红外吸收谱，俄歇电子谱以及二次离子质谱等实验方法对薄膜的组分，结构２，界面过渡区的特性以及膜层中的氢分布进行了分析，实验表明：在制备减反射膜中，要获得较佳的减反效果，应尽量降低淀积温度，增大微波功率。     

光伏玻璃防尘性能研究

分别选取原片玻璃及2种光伏玻璃——普通减反射涂层(AR)玻璃与防尘(Anti-Soiling,AS)玻璃,对这3种样品进行耐沙尘测试,并对测试结果进行比对分析,揭示了沙尘对光伏玻璃膜层性能的影响方式和结果,以便为评判光伏玻璃防尘性能提供数据基础。     

Investigations of solar cells with porous silicon as antireflection layer

The possibility of using porous silicon layers as antireflection coating instead of the antireflection coatings in common silicon solar cells was investigated. A technology for the manufacture of porous silicon antireflection layers was developed. The comparison of the photovoltaic and optical characteristics of investigated samples of solar cells with ZnS antireflection coating and with porous silicon antireflection coating is presented. It is shown that the formation of the porous layer under optimal technological regimes leads to significant improvement of the main photovoltaic parameters–short-circuit current and open-circuit voltage.     

High performance anti-reflection coatings for broadband multi-junction solar cells

The success of bandgap engineering has made high-efficiency broadband multi-junction solar cells possible with photo-response out to the band edge of germanium. Modeling has been conducted which suggests that current double-layer antireflection coating technology is not adequate for these devices in certain cases. Approaches for the development of higher performance antireflection coatings are examined. A new antireflection coating structure based on the use of Herpin equivalent layers is presented. Optical modeling of the new AR coating suggests a decrease in the solar weighted reflectance of 2.5% absolute over typically used double-layer antireflection coatings. This structure requires no additional optical material development and characterization because no new optical materials are necessary. Experimental results and a sensitivity analysis are presented.     

TiO_2/SiO_2双层减反膜在太阳电池上的应用

利用二氧化硅(SiO_2)对太阳电池表面的钝化作用,对传统的二氧化钛(TiO_2)单层减反膜进行了改良.基于理论模拟分析了光反射率随膜层(TiO_2/SiO_2)厚度变化规律,结合实验上SiO_2最佳厚度经验值,制备了晶体硅太阳电池(即TiO_2/SiO_2/Si),并和SiN_x/Si结构的晶体硅太阳电池相比较.分别测试了少子寿命、反射率、电性能参数等,结果表明这种改良后的TiO_2减反膜也可以取得很好的减反效果和钝化效果.镀有TiO_2,SiO_2双层膜与SiN_x减反膜绒面晶体硅片的积分反射率分别为4.9%和3.9%;使用以上两种不同减反膜制备的太阳电池的开路电压均可达到0.62V.可见这种TiO_2双层膜有望在将来的生产中得到具体应用.     

Antireflection coatings for solar elements based on a composition of Ge and GeO2

The optical properties of a single layer antireflection coating for solar elements based on a composition of Ge and GeO₂ are studied. The results of computer modeling and optical measurements led to the conclusion that a single layer coating based on a composition of Ge and GeO₂ is an efficient antireflection coating and has technological advantages as compared with the traditionally used coatings.     

AlxGa1-xAs/GaAs太阳电池MgF2/ZnS双层减反射膜的研究

介绍了在AlxGa1-xAs/GaAs太阳电池上制备MgF2/ZnS双层减反射膜的研究工作,引入了有效反射率R,并通过使Re极小来实现减反射膜的优化设计,考虑了MgF2/ZnS双层减反射膜与窗口层的耦合,实验上获得了良好的减反射膜,提高了AlxGa1-xAs/GaAs太阳电池的短路电流和效率,表明用Re极小化来设计减反射膜是合理的。     

Single-material TiO2 double-layer antireflection coatings

This paper demonstrates that a double-layer antireflection (DLAR) coating can be fabricated using a single material, titanium dioxide (TiO₂). The optical properties of the top and bottom TiO₂ layers were controlled by varying the deposition and sintering conditions, resulting in a range of refractive indices, n=1.73–2.63 at 600 nm. Weighted average reflectances of 6.5% (measured) and 7.0% (calculated) were achieved for TiO₂ DLAR coatings in air and under glass, respectively. When implemented in a high-efficiency silicon solar cell, a short-circuit current density increase of ΔJ_sc=2.5 mA/cm² can be expected for an optimised TiO₂ DLAR coating when compared to a commercial TiO₂ single-layer antireflection coating.     

Porous SiO2 films prepared by remote plasma-enhanced chemical vapour deposition – a novel antireflection coating technology for photovoltaic modules

In this work an innovative antireflection coating technology for photovoltaic modules based on remote plasma-enhanced chemical vapour deposition of porous SiO₂ films is presented. We show that the proposed technology has the potential to significantly improve the performance of photovoltaic modules by effectively reducing the optical losses of the air/glass interface. As a result, the transmission of a glass pane measured at a single wavelength was increased from 91.7% to 100% by a single-layer porous SiO₂ antireflection coating on both sides of the glass pane. Furthermore, a double-layer porous SiO₂ antireflection coating on both sides of the glass pane increased the transmission weighted with the AM1.5G spectrum in the 400–1150 nm wavelength region from 91.6% to the remarkably high value of 99.4%.     

太阳电池减反射膜系统的研究

减反射膜系的制备对于高效空间太阳电池来说非常重要,对其进行优化设计可以大幅度的提高太阳电池的短路电流,从而提高太阳电池的光电转换效率,从波动光学的基本原理出发,用加权平均反射率作为评价膜系设计质量的参数,编制出了进行减反射膜系优化设计的计算机程度,理论上可以使太阳电池表面的加权平均反射率降到1％以下,提高了电池的短路电路。