Title :
Anti-Reflective-Coating Tuned for Higher Solar Module Voltage
Author :
Neander, Marcus ; Gromball, Frank ; Neumann, Dirk ; Harder, Nils-Peter ; Nositschka, Wolfgang Andreas
Author_Institution :
R&D Glass for Buildings, Saint-Gobain Glass Deutschland, Herzogenrath
Abstract :
The use of a low absorbing extra-white solar module cover glass increases the light transmission to the solar cell. Due to lower absorption over a broad wavelengths range, a low-iron extra-white glass has a significantly higher energy transmission than normal window glass. Specialized solar-grade high-transmission glasses covered with an anti-reflective coating (ARC) shows a further increase in module efficiency in the order of 2,5-3%. Besides the increased short circuit current due to increased transmission an additional advantage of a ARC is presented: a decrease in heating of the solar module during light exposure due to observed increase in reflectance for the longer wavelengths results in higher open circuit voltage of approx. 1 %
Keywords :
antireflection coatings; glass; light transmission; silicon compounds; solar cells; thin films; SiO2-Si3N4; antireflective coating; energy transmission; light transmission; module efficiency; open circuit voltage; reflectance; short circuit current; solar cell; solar module; solar-grade high-transmission glasses; thin film materials; Circuits; Coatings; Glass; Photovoltaic cells; Reflectivity; Refractive index; Semiconductor thin films; Silicon; Solar heating; Voltage;
Conference_Titel :
Photovoltaic Energy Conversion, Conference Record of the 2006 IEEE 4th World Conference on
Conference_Location :
Waikoloa, HI
Print_ISBN :
1-4244-0017-1
Electronic_ISBN :
1-4244-0017-1
DOI :
10.1109/WCPEC.2006.279910
