Title :
Laser patterning of a-Si solar modules with transparent conducting zinc oxide back electrodes
Author :
Praschek, S.R. ; Riedl, W. ; Hoermann, H. ; Goslowsky, H.G.
Author_Institution :
Siemens Solar GmbH, Munich, Germany
Abstract :
A patterning process has been developed for a Nd:YAG picosecond pulse laser and for a frequency-doubled Nd:YLF nanosecond laser. Best results were achieved with a 10 ns laser pulse at a wavelength of 523 nm focused through the glass substrate. The authors obtained a whole-area efficiency of 9.8% for a 300×310 mm2 pin-a-Si:H solar module. A tentative process model is given
Keywords :
II-VI semiconductors; amorphous semiconductors; elemental semiconductors; hydrogen; laser beam applications; optical films; semiconductor thin films; silicon; solar cells; surface treatment; zinc compounds; 10 ns; 523 nm; LiYF4:Nd; YAG:Nd picosecond pulse laser; YAl5O12:Nd; YLF:Nd nanosecond laser; amorphous Si:H solar cells; laser patterning; pin solar module; semiconductor; transparent conducting ZnO back electrodes; Electrodes; Laser beam cutting; Laser mode locking; Laser modes; Laser theory; Optical pulses; Pulsed laser deposition; Ring lasers; Transistors; Zinc oxide;
Conference_Titel :
Photovoltaic Specialists Conference, 1991., Conference Record of the Twenty Second IEEE
Conference_Location :
Las Vegas, NV
Print_ISBN :
0-87942-636-5
DOI :
10.1109/PVSC.1991.169415
