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太阳能电池片的生产工艺流程具体是什么样的

太阳能电池片的生产工艺流程具体是什么样的

浏览：43次 | 提问时间： 08-03 05:53

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别假 08-03 05:54

一、硅片检测硅片是太阳能电池片的载体，硅片质量的好坏直接决定了太阳能电池片转换效率的高低，因此需要对来料硅片进行检测。该工序主要用来对硅片的一些技术参数进行在线测量，这些参数主要包括硅片表面不平整度、少子寿命、电阻率、P/N型和微裂纹等。该组设备分自动上下料、硅片传输、系统整合部分和四个检测模块。其中，光伏硅片检测仪对硅片表面不平整度进行检测,同时检测硅片的尺寸和对角线等外观参数；微裂纹检测模块用来检测硅片的内部微裂纹；另外还有两个检测模组，其中一个在线测试模组主要测试硅片体电阻率和硅片类型，另一个模块用于检测硅片的少子寿命。在进行少子寿命和电阻率检测之前，需要先对硅片的对角线、微裂纹进行检测，并自动剔除破损硅片。硅片检测设备能够自动装片和卸片，并且能够将不合格品放到固*置，从而提高检测精度和效率。二、表面制绒单晶硅绒面的*是利用硅的各向异性腐蚀，在每平方厘米硅表面形成几百万个四面方锥体也即金字塔结构。由于入射光在表面的多次反射和折射，增加了光的吸收，提高了电池的短路电流和转换效率。硅的各向异性腐蚀液通常用热的碱性溶液，可用的碱有氢氧化钠，氢氧化钾、氢氧化锂和乙二*等。大多使用廉价的浓度约为1%的氢氧化钠稀溶液来*绒面硅，腐蚀温度为70-85℃。为了获得均匀的绒面，还应在溶液中酌量添加醇类如乙醇和异丙醇等作为络合剂，以加快硅的腐蚀。*绒面前，硅片须先进行初步表面腐蚀，用碱性或*性腐蚀液蚀去约20～25μm，在腐蚀绒面后，进行一般的化学清洗。经过表面准备的硅片都不宜在水中久存，以防沾污，应尽快扩散制结。三、扩散制结太阳能电池需要一个大面积的PN结以实现光能到电能的转换，而扩散炉即为*太阳能电池PN结的专用设备。管式扩散炉主要由石英舟的上*部分、废气室、炉体部分和气柜部分等四大部分组成。扩散一般用三*氧磷液态源作为扩散源。把P型硅片放在管式扩散炉的石英容器内，在850---900摄氏度高温下使用氮气将三*氧磷带入石英容器，通过三*氧磷和硅片进行反应，得到磷原子。经过一*间，磷原子从四周进入硅片的表面层，并且通过硅原子之间的空隙向硅片内部渗透扩散，形成了N型半导体和P型半导体的交界面，也就是PN结。这种方法制出的PN结均匀性好,方块电阻的不均匀性小于百分之十,少子寿命可大于10ms。*PN结是太阳电池生产最基本也是最关键的工序。因为正是PN结的形成，才使*和空*在流动后不再回到原处，这样就形成了电流，用导线将电流引出，就是直流电。

Blessng 08-03 06:02

太阳能电池片的生产工艺流程分为硅片检测——表面制绒——扩散制结——去磷硅玻璃——等离子刻蚀——镀减反射膜——丝网印刷——快速烧结等

撑开窗等月光 08-03 06:11

1、电池片测试分选2、激光划片(整片使用时无此步骤)3、电池片单焊(正面焊接)并自检验4、电池片串焊(背面串接)并自检验5、中检测试→叠层敷设(玻璃清洗、材料下料切割、敷设)6、层压(层压前灯检、层压后削边、清洗)7、终检测试→装边框(涂胶、装镶嵌角铝、装边框、撞角或螺钉固定、边框打孔或冲孔、擦洗余胶)8、装接线盒、焊接引线9、高压测试10、清洗、贴标签11、组件抽检测试12、组件外观检验13、包装入库。希望我都饿回答对你有帮助

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