Black silicon solar cells with black bus-bar strings

Rasmus Schmidt Davidsen, Peter Torben Tang, Io Mizushima, Sune Thorsteinsson, Peter Behrensdorff Poulsen, Jesper Frausig, Ørnulf Nordseth, Ole Hansen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


We present the combination of black silicon texturing and blackened bus-bar strings as a potential method for obtaining all-black solar panels, while using conventional, front-contacted solar cells. Black silicon was realized by maskless reactive ion etching resulting in total, average reflectance below 0.5% across a 156x156 mm2 silicon wafer. Four different methods to obtain blackened bus-bar strings were compared with respect to reflectance, and two of these methods (i.e., oxidized copper and etched solder) were used to fabricate functional allblack solar 9-cell panels. The black bus-bars (e.g., by oxidized copper) have a reflectance below 3% in the entire visible wavelength range. The combination of black silicon cells and blackened bus-bars results in aesthetic, all-black panels based on conventional, front-contacted solar cells without compromising efficiency.
Original languageEnglish
Title of host publicationProceedings of 43rd IEEE Photovoltaic Specialists Conference
Number of pages4
Publication date2016
Article number7750183
Publication statusPublished - 2016
Event43rd IEEE Photovoltaic Specialists Conference - Portland, Oregon, United States
Duration: 5 Jun 201610 Jun 2016


Conference43rd IEEE Photovoltaic Specialists Conference
CountryUnited States
CityPortland, Oregon

Cite this

Davidsen, R. S., Tang, P. T., Mizushima, I., Thorsteinsson, S., Poulsen, P. B., Frausig, J., Nordseth, Ø., & Hansen, O. (2016). Black silicon solar cells with black bus-bar strings. In Proceedings of 43rd IEEE Photovoltaic Specialists Conference (pp. 2885-2888). [7750183] IEEE.