Regensburg 2000 – wissenschaftliches Programm
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HL: Halbleiterphysik
HL 27: Poster II: SiC (1-7), Ultrakurzzeitdynamik (8-15), Halbleiterlaser (16-20), GaN (21-38), III-V Halbleiter (39-56), Photovoltaik (57-64), Störstellen (65-68), Tern
äre Halbleiter (69-70)
HL 27.58: Poster
Mittwoch, 29. März 2000, 14:00–19:00, A
Energy output study of mc-Si solar cells with visually attractive bus bars — •R. Ebner, M. Radike, and J. Summhammer — Atomic Institute of the Austrian Universities, Vienna, Austria
One of the major demands of architects concerning the use of
photovoltaics (PV) in building integration is to reduce the annoying
visual appearance of the bus bars on the front side of solar cells. A
recent EU-Joule funded project BIMODE (”Development of bi-functional
photovoltaic modules for building integration”) under the coordination
of BP-Solar dealt with this problem. The sub-task of the Solar Cells
Group of the Atomic Institute of the Austrian Universities (AIAU) was
the investigation of crystalline silicon solar cells equipped with
decoratively patterned bus bars, such that roofs and facades with PV
would attain an additional aesthetic effect and enhanced architectural
value combined with almost the same energy output.
Our basic strategy was to build up a module with only a few types of bus
bar patterns for the individual cells. This would permit a large variety
of combinations to achieve many different appearances at the module
level. In a previous work the patterns were simulated theoretically.
Here we present the experimental verification, done on Bayer-Solar,
1Ohm.cm, boron pre-doped mc-Si wafers of
size 100x100mm2. The results indicate
that the optimization of current collection from the front side of
crystalline silicon solar cells is not opposed to the aim of high output
power. Rather, there is a wide margin for design, without significantly
loosing on performance.