【能源人都在看，点击右上角加'关注'】北极星太阳能光伏网讯:EL测试的机理是电致发光成像，利用少数载流子的电致辐射复合发光，对光伏组件在外加偏压时发出的荧光进行收集成像，可迅速检测出太阳电池中肉眼无法识别的复合缺陷。
英:STN has nematic LC which can twist from 180 degrees to 270 degrees or uses namatic LC display type. With a fixed angle， the straight polarizer shoots on to the axis of the LC molecule and because of the birefringence property， the straight polarizer becomes ellipse polarizer. By utilizing the existence of electrical field to control the LC molecule to stay in between the STN structure and vertical orientation， STN can be drove from the property of birefringence. Generally， they are in either yellow or blue color， and it can display white color when special phase film or compensated LC board. This also applies to color display. Comparing with TN， it has a wider viewing angle， but the disadvantage is slow in response speed.
改编原文:Mohammad Ali Mirza， Mahtab Ghoroori， Zhangxin Chen. Intelligent Petroleum Engineering. Engineering，2022，18:27-32.
在摩尔定律的推动下，集成电路芯片集成度不断提高，光刻胶技术也不断发展，经历了宽谱光刻胶、G/I线光刻胶、248 nm光刻胶、193 nm光刻胶等一系列技术平台，从技术上经历了环化橡胶体系、酚醛树脂-重氮奈醌体系及化学放大体系。
1、引言晶硅太阳能电池在制造过程中通常采用制绒、扩散、刻蚀、PECVD、印刷、烧结几道工序，由于一些机械应力、热应力及人为等不稳定因素的存在，会不可避免的造成硅片的一些隐性缺陷如污染、裂纹、扩散不均匀等，这类缺陷的存在大大降低了电池片的光电转换效率，导致公司增加经济损失。
