磷浆法制备选择性发射极单晶硅太阳能电池的研究

发布时间：2018-03-20 22:27

本文选题：太阳能电池　切入点：选择性发射极　出处：《北京交通大学》2011年硕士论文　论文类型：学位论文

【摘要】：当今社会,随着环境污染、能源危机等问题的凸显,洁净的太阳能利用被提上日程。在目前的太阳能电池生产领域,晶硅电池仍然占据着主要市场。与此同时,晶体硅电池生产的高成本又限制了其进一步大规模应用。虽然目前晶体硅太阳电池工艺流程简单,大规模生产容易实现。但是在扩散和丝网印刷两道工序相互制约：扩散为了减少载流子复合,通常要求低掺杂；而丝网印刷为了形成良好的欧姆接触,要求重掺杂；因此要求达到扩散后表面薄层电阻为45Ω/(?)左右的重掺杂,限制了太阳电池的光电转换效率。本研究改变了常规的单晶硅太阳能电池生产工艺,制备了选择性发射极太阳能电池。主要方法是在扩散之前,在电极区域印刷一层磷浆,然后用磷浆作为磷源对电极区域进行重扩散；与此同时,在非电极区域采用POC13作为磷源轻扩散。以此方法制备了选择性发射极高效太阳能电池,并且与常规工艺电池片进行对比测试。经过测试,转换效率比常规工艺电池片要高0.6%。论文的主要研究工作概括如下： 1、对太阳能电池的原理进行介绍,主要从结构、模型和参数进行分析,并且介绍目前单晶硅太阳能电池生产工艺和设备。 2、对选择性发射极的提出、原理和实现方法进行研究。根据各个方式对比,选择了一种容易实现的磷浆法,并且研究了磷浆法选择性发射极电池的制备流程。 3、根据实验步骤,对制备的选择性发射极电池和常规电池进行测试和分析,通过对比,验证了选择性发射极电池的优势,达到了预期的效果。
[Abstract]:In today's society, with prominent environmental pollution, energy crisis and other issues, clean solar energy to be put on the agenda. In the current field of solar cell production, the crystal silicon battery still dominated the market. At the same time, the high cost of crystalline silicon cell production and limit its further application on a large scale. Although the crystal silicon solar cell technology the process is simple, easy to realize large-scale production. But restricted in the diffusion and screen printing of two processes: diffusion in order to reduce the carrier recombination, usually require low doping; and screen printing in order to form good ohmic contact, requires heavy doping; therefore required diffusion surface sheet resistance is 45 ohms / (?) about heavy doping the photoelectric conversion efficiency limit of solar cells.
The changes of crystalline silicon solar cell production process routine, preparation of selective emitter solar cells. The main method is in diffusion before printing a layer of phosphor paste in the electrode region, and then use the phosphorus slurry as phosphorus source for electrode region diffusion; at the same time, in the POC13 electrode region as phosphorus source light diffusion this. The preparation method of selective emitter solar cells, and were tested and compared with the conventional process cell. After testing, the main research work of higher conversion efficiency than conventional 0.6%. the process of cell are summarized as follows:
1, introduce the principle of solar cells, mainly from the structure, model and parameters, and introduce the current production technology and equipment of monocrystalline silicon solar cells.
2, the principle, the implementation method of the selective emitter is studied. According to the comparison of different ways, an easy implementation of the phosphorous slurry method is selected, and the preparation process of the phosphoric acid selective emitter battery is studied.
3, according to the experimental steps, the selective emitter and conventional batteries were tested and analyzed. By comparison, the advantages of selective emitter batteries were verified, and achieved the desired results.

【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TM914.4

【参考文献】