喷墨打印技术在指插式背接触太阳能电池制造中的应用

发布时间：2018-01-11 11:25

  本文关键词：喷墨打印技术在指插式背接触太阳能电池制造中的应用　出处：《南京理工大学》2017年硕士论文　论文类型：学位论文

  更多相关文章： 指插式背接触太阳能电池 喷墨打印 疏水化改性 发射极 背表面场

【摘要】：环境污染问题和能源危机使人们越来越重视对太阳能的利用,光伏产业也因此得到迅速发展。当前光伏产业发展的核心问题是提高太阳能电池的光电转换效率,同时降低其生产成本。指插式背接触(IBC)太阳能电池是光电转换效率最高的晶硅太阳能电池之一,具有广阔的市场前景。但是其生产成本高,这就需要我们对传统的制造工艺加以改进。本文研究了用喷墨打印技术制备IBC太阳能电池的发射极和背表面场,工作包括这三个部分:(1)将硅片基底进行表面疏水化改性,再用硼墨水打印线条。发现硅片经过十四烷基三氯硅烷和正己烷体积比为1:400的溶液改性后,可以打印出较规整、最细为630 μm宽的硼线。然后将打印过硼墨水的硅片在不同条件下退火,发现在950℃C下退火1h可以成功制备发射极,发射极的载流子峰值浓度为3.41×1019cm-3,结深为0.59 μm,方块电阻为37.81Ω/sq。(2)在不经表面处理的硅片上用磷墨水直接打印线条,打印出了较规整、最细为159.9 μm宽的磷线。然后将打印过磷墨水的硅片在不同条件下退火,发现在和硼墨水相同的退火条件下可以成功制备背表面场,背表面场的载流子峰值浓度为2.65×1019cm-3,结深为0.70μm,方块电阻为44.7Ω/sq。(3)根据实验制得的发射极和背表面场的各项参数,使用Quokka软件模拟出了完整的IBC太阳能电池,并不断变化发射极宽度,研究电池能量损失和光电转换效率的变化,发现当发射极宽度为830μm时电池效率可达23%。说明低成本的喷墨打印技术可以胜任IBC太阳能电池的发射极和背表面场的制备。
[Abstract]:Environmental pollution and energy crisis make people pay more and more attention to the utilization of solar energy, and the photovoltaic industry is developing rapidly. The core problem of the current development of photovoltaic industry is to improve the photovoltaic conversion efficiency of solar cells. At the same time, it can reduce the production cost. As one of the most photovoltaic silicon solar cells with the highest photoelectric conversion efficiency, the plugged back contact IBC solar cell has a broad market prospect, but its production cost is high. Therefore, we need to improve the traditional manufacturing process. In this paper, we study the emitter and back surface field of IBC solar cells prepared by inkjet printing technology. The work includes three parts: 1) surface hydrophobic modification of silicon substrate. Then the boron ink was used to print the lines. It was found that the silicon wafer could be printed out by modification of 14 alkyl trichlorosilane and 1: 400 volume ratio of hexane. The thinnest boron wire is 630 渭 m wide. Then the silicon wafer printed with boron ink is annealed under different conditions. It is found that emitter can be successfully prepared at 950 鈩，

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