TY - GEN
T1 - Laser technology for solar cells and solar receivers
AU - Schoonderbeek, Aart
AU - Richter, Lars
AU - Kling, R.
AU - Ostendorf, Andreas
AU - Denkena, B.
AU - Grischke, R.
AU - Mau, S.
AU - Harder, N. P.
AU - Brendel, R.
N1 - Funding Information:
The laser processing work for solar receivers was
supported in the project “glass to metal fusing with
laser radiation” No. 14414 N by the German Ministry
of economics (BMWi), the community of industrial
research (AiF “Otto von Guericke”) and the research
community technology and glass (FTG), which we
gratefully acknowledge.
The laser processing work for solar cells was
supported by the State of Lower Saxony/Germany,
which we gratefully acknowledge.
PY - 2007
Y1 - 2007
N2 - During the last few years, solar energy conversion by photovoltaics and solar receivers has grown enormously. For the future, efficient and durable products at low cost are necessary and laser technology offers many opportunities to realize this. Two of these technologies are discussed in this paper. First, a technology is discussed for producing solar receivers. A requirement for a solar receiver is a vacuum between the absorber and the cover glass tube during the operation lifetime of at least 25 years. To realize this requirement, glass and metal must be directly fused. A CO2-laser in combination with a process temperature controller is used instead of a gas flame to obtain a stable process and to avoid chemical interaction between flame and fusing zone. This paper shows the results of the developed laser process compared to a flame fusing process. The second technology discussed is used for producing silicon wafer based solar cells. A method to reduce costs is reducing the wafer thickness. Consequently, contact and pressure-free laser processing has large advantages. Experimental investigations are discussed for drilling holes for new solar cell concepts. Damage to the silicon around the processing area should be avoided. Results obtained with different laser types are compared regarding the quality, speed and costs.
AB - During the last few years, solar energy conversion by photovoltaics and solar receivers has grown enormously. For the future, efficient and durable products at low cost are necessary and laser technology offers many opportunities to realize this. Two of these technologies are discussed in this paper. First, a technology is discussed for producing solar receivers. A requirement for a solar receiver is a vacuum between the absorber and the cover glass tube during the operation lifetime of at least 25 years. To realize this requirement, glass and metal must be directly fused. A CO2-laser in combination with a process temperature controller is used instead of a gas flame to obtain a stable process and to avoid chemical interaction between flame and fusing zone. This paper shows the results of the developed laser process compared to a flame fusing process. The second technology discussed is used for producing silicon wafer based solar cells. A method to reduce costs is reducing the wafer thickness. Consequently, contact and pressure-free laser processing has large advantages. Experimental investigations are discussed for drilling holes for new solar cell concepts. Damage to the silicon around the processing area should be avoided. Results obtained with different laser types are compared regarding the quality, speed and costs.
UR - https://www.scopus.com/pages/publications/77954206998
U2 - 10.2351/1.5061063
DO - 10.2351/1.5061063
M3 - Conference contribution
AN - SCOPUS:77954206998
SN - 9780912035888
T3 - 26th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2007 - Congress Proceedings
BT - 26th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2007 - Congress Proceedings
T2 - 26th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2007
Y2 - 29 October 2007 through 1 November 2007
ER -