In material processing, a laser system with optimal laser parameters has been considered to be significant. Especially, the laser ablation technology is thought to be very important for fabricating a dye- sensitized solar cell(DSSC) module with good q...
In material processing, a laser system with optimal laser parameters has been considered to be significant. Especially, the laser ablation technology is thought to be very important for fabricating a dye- sensitized solar cell(DSSC) module with good quality. Moreover, the TEM00 mode laser beam is the most dominant factor to decide the incident photon to current conversion efficiency(IPCE) characteristics.
In order to get the TEM00 mode, a pin-hole is inserted within a simple pulsed Nd:YAGlaser resonator. And the spatial field distribution is measured by using three pin-hole diameters of 1.6, 2.0 and 4.0mm,
respectively. At that moment, each case has the same laser beam energy by adjusting the discharge voltage and pulse per second(pps). From
those results, it is known that the pin-hole size of 1.6mm has the perfect TEM00 mode. In addition, at the charging voltage of 1000V, 10pps, the feeding speed of 6.08mm/s and the over lapping rate(OL) of 62%,the scanning electron miro scope(SEM) photo graph of fluorine
-doped tin oxide(FTO)thin film layers shows the best ablation trace