共查询到20条相似文献,搜索用时 78 毫秒
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介绍了在全国产设备构成的中试线上开展的高效单晶硅太阳电池研究工作,并制备出了最高转换效率达15.7%的单体电池(面积103×103mm2).实验采用PECVD方法制备SiNx减反、钝化薄膜,并采用正背面电极一次金属化烧结技术,同时完成氮化硅薄膜烧穿工艺.实验还研究了PECVD硅烷与氨气流量比对SiNx钝化、光学和保护性质的影响.分析了氮化硅薄膜及简化新工艺与提高太阳电池效率的关系.实验最后采用化学染色法测量了太阳电池的p-n结结深,结果表明该太阳电池的p-n结为0.25 μm的浅结,直接证明了SiNx薄膜对p-n结有良好的保护作用. 相似文献
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《太阳能》2020,(1)
以激光掺杂选择性发射极(LDSE)技术在PERC单晶硅太阳电池中的应用为研究对象,使用太阳电池单二极管模型模拟了反向饱和电流密度与开路电压、比接触电阻与填充因子之间的关系;测试了不同激光功率和激光划线速度对扩散后方块电阻变化值的影响,并通过扫描电镜(SEM)对硅片表面形貌和电化学电容-电压(ECV)法对发射极表面浓度和结深进行了表征;采用5主栅金属化图形设计PERC单晶硅太阳电池,通过LDSE工艺参数优化,制备了平均转换效率达到21.92%的PERC单晶硅太阳电池。研究结果表明,LDSE技术可提高PERC单晶硅太阳电池的外量子效率(EQE)短波蓝光响应和转换效率。 相似文献
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采用等离子增强化学气相沉积(PECVD)技术制备了系列本征微晶硅薄膜材料和nip单结微晶硅太阳电池,研究了硅烷浓度、衬底温度和辉光功率等沉积参数与薄膜材料性能、薄膜电池性能三者之间的关系.拉曼光谱和器件测试结果表明:随硅烷浓度的增加,本征层晶化率逐渐减小,直至转变为非晶硅;沉积温度高于200℃时,电池性能严重恶化;随等离子辉光功率增加,材料晶化率保持不变,而电池开路电压逐渐增大,短波光谱响应逐渐增强.在此基础上,优化了单结微晶硅电池沉积参数,得到效率为6.48% (AM0,25℃)的单结微晶硅薄膜太阳电池;并将其应用到非晶硅/微晶硅叠层电池中,在不锈钢柔性衬底上得到效率为9.28%( AM0,25℃)的叠层电池. 相似文献
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本文对采用管式等离子体增强化学气相沉积(PECVD)法沉积的氮化硅与氮氧化硅(SiyNx/SiOxNy)叠层膜进行了实验研究,结果表明:在硅片正面镀膜时增加SiOxNy膜层,既可以增强正面的钝化效果,还可以降低对光的反射率,增加光吸收率,从而提升太阳电池的短波响应能力,通过对膜层组分和反应气体流量等工艺参数进行匹配优化,使太阳电池的光电转换效率提升了0.07%;利用SiyNx/SiOxNy叠层膜抗氧化、抗钠离子的特性,使太阳电池的抗电势诱导衰减(PID)性能提升了22%。 相似文献
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以采用PECVd工艺制备的背面氮化硅薄膜对双面单晶硅太阳电池电致发光(EL)发黑的影响为研究对象进行了实验验证。结果表明,当背面氮化硅薄膜中底层膜的折射率较低时,会导致双面单晶硅太阳电池背电极位置的EL发黑;底层膜和中层膜的折射率过高时,会导致双面单晶硅太阳电池的EL大面积发黑;上层膜边缘的折射率较高时,会导致双面单晶硅太阳电池的边缘位置EL发黑。对于双面单晶硅太阳电池而言,采用PECVd工艺制备背面氮化硅薄膜时制定合理的底层膜、中层膜,以及上层膜边缘的折射率范围,可以有效避免双面单晶硅太阳电池不良品的产生。 相似文献
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一种喷涂SnO_2减反射薄膜的新工艺及材料研究 总被引:1,自引:1,他引:0
采用超声雾化喷涂法沉积得到 Sn O2 薄膜和掺氟离子 Sn O2 薄膜。通过改变掺杂量和选择合适的工艺条件可控制掺氟 Sn O2 薄膜的方块电阻 ,其最小方块电阻值达 10 Ω/□。用 5 5 0 nm单色光测得其透过率为 85 %— 90 %。用 X射线衍射仪及扫描电子显微镜分析 Sn O2 薄膜的微结构和成份 ,薄膜为择优取向晶化。薄膜具有很好的抗腐蚀性能。在已完成 pn结及电极制作工序的单晶硅太阳电池上沉积一层厚 70 nm的未掺杂 Sn O2 薄膜 ,构成光学减反射层 ,其电池的短路电流 Isc提高约 5 %— 10 %。 相似文献
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S. BEHLING 《国际可持续能源杂志》2013,32(1-4):47-53
Abstract The term “solar architecture”is a very dangerous one. As we were always told, there is architecture as to create shelter for people. We have architecture for big people, small people, white people, black people, any kind of colour of people, healthy people, disabled people. And you start thinking to yourself, making these classifications. Does that help? And you probably have architecture for all of them. So there is disabled architecture or black architecture, lbelieve we should say that there isn't. It is quite simple: there is good architecture and there is bad architecture. Good architecture has to take care of all these factors, of solar energy as well. Probably there is a problem that, particularly in the later years, architects have actually not done that. But if you study history you will come to the conclusion, that the solar “factor” has always influenced good architecture? The Jama Manta Observatory in Jaipur where the Shajahan created enormous buildings to actually follow the paths of the sun, you could say are the purest form of solar architecture, but first of it is beautiful architecture. The same is true for Saint Chapel, it is very good architecture, but it is solar architecture, because it wouldn't work without the 相似文献
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JOACHIM GRETZ 《国际可持续能源杂志》2013,32(3-4):243-250
The intermittance and the geographical distribution of solar energy require means of storing and transporting it to the user's place for which an ideal means of doing this is to split water in order to obtain hydrogen Hydrogen is a carbonfree fuel which oxydizes to water as combustion product. The generated water becomes, together with renewable primary energy for splitting it, a source of clean and abundant energy in a carbon-free, natural cycle Hydrogen is a fuel which can be transported over long distances and stored so that solar energy can be transported from energy rich countries over long distances in ships to Europe, stored underground or in containers and used in gaseous or liquid form in industry, households, power stations, motor cars and aviation Solar energy as primary energy is discussed, a special form of it, the cheapest and by now largely available hydropower, is stressed Techniques of hydrogen production, vectorisation and end use is discussed as well as safety aspects, costs and strategy for its implementation. 相似文献
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A simple model for the photovoltaic processes in a diffused base silicon solar cell is presented. The practical profiles of impurity concentration are taken into account by using the method of integration by piecewise exponential approximations. The realistic variation of mobility and built-in field are considered. Such parameters of solar conversion as short circuit current, open circuit voltage and conversion efficiency are computed. Results show that these parameters are are sensitive functions of the impurity distribution in the graded base and the recombination velocity at the surface of the diffused layer. The model holds promise of its application for parametric study and optimization of the solar cell configuration. © 1997 John Wiley & Sons, Ltd. 相似文献
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一种新型太阳电池的设计 总被引:7,自引:2,他引:5
为了降低硅太阳电池的造价,近年来再次掀起晶体硅薄膜太阳电池的研究热潮,基于同一个目的,试图研究另一种新颖太阳电池-“硅粒太阳电池”。本文主要从太阳电池的基本原理出发,介绍了这种硅粒太阳电池的设计电路,讨论了它的结构和工艺特点,同时需要地报道了对该电池硅晶粒层的初步研究结果。 相似文献
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采用蒙特卡洛射线追踪法,研究不同季节和安装角度等关键参数对波纹板太阳能集热器与平板太阳能集热器吸热板表面太阳辐照度的影响,并对得到的数据进行分析。模拟结果显示,在相同安装角度下,波纹板太阳能集热器吸热板表面太阳辐照度比平板太阳能集热器大。二者相差的百分比随光线对集热器的入射角而变化,入射角较小时,相差的百分比较大。90°安装时,冬季波纹板太阳能集热器累积辐照度比平板太阳能集热器提升6.2%,夏季二者接近。40°安装时,冬季和夏季波纹板太阳能集热器累积辐照度分别比平板太阳能集热器提升7.1%和6.9%。 相似文献