Influence of laser scribing in the electrical properties of a-Si:H thin film photovoltaic modules
Influence of laser scribing in the electrical properties of a-Si:H thin film photovoltaic modules
复制标题
激光划片对a-Si:H薄膜光伏组件电性能的影响
DOI：
10.1016/j.solmat.2010.12.007
复制
发表时间：
2011
影响因子：
6.9
通讯作者：
C. Molpeceres
中科院分区：
文献类型：
--
作者：
J. J. García;I. Torres;S. Lauzurica;D. Canteli;J. J. Gandía;C. Molpeceres
利用波长为532 nm的半导体泵浦固体激光器和延迟发生器，对薄膜光伏器件的第三步(P3)激光图案化进行了实验研究。通过对单个薄膜太阳能电池进行刻划，研究了图案化工艺对器件电特性的影响。结果表明，在这种类型的实验中，运动系统或控制激光方向的扫描器中的惯性对结果起着关键作用。通过外部控制激光束的输出，可以克服惯性并研究P3激光划片对器件电学特性的实际影响。在优化激光刻划条件并考虑系统惯性的情况下，P3工艺对器件电学特性的影响很小。换算到模块，这意味着通过优化P3工艺，可以将从单个电池到模块的放大时发现的效率下降最小化(就P3工艺而言)到来自移除区域的效率下降。
The third (P3) laser patterning step of thin film photovoltaic devices is studied experimentally using a diode pumped solid state laser with 532nm wavelength and a delay generator. The effect on the electrical characteristics of the devices due to the patterning process is investigated by performing scribes on single, thin-film solar cells. As it is shown, in this type of experiments the inertia in the motion systems or in the scanner controlling the direction of the laser beam plays a critical role in the results. By controlling externally the output of the laser beam it is possible to overcome the inertia and investigate the real effect of the P3 laser scribing on the device electrical characteristics. When the laser scribing conditions are optimized and the inertia in the system is taken care of, the P3 process has very little effect on the device electrical characteristics. Translated to modules this means that by optimizing the P3 process, the decrease in the efficiency found when up-scaling from single cells to modules can be minimized (as far as the P3 process is concerned) to that coming from the removed area.