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.
|Title of host publication||Proceedings of 43rd IEEE Photovoltaic Specialists Conference|
|Number of pages||4|
|Publication status||Published - 2016|
|Event||43rd IEEE Photovoltaic Specialists Conference - Portland, Oregon, United States|
Duration: 5 Jun 2016 → 10 Jun 2016
|Conference||43rd IEEE Photovoltaic Specialists Conference |
|Period||05/06/2016 → 10/06/2016|