The chameleon luminaire technology, in which the luminescent color can change with temperature, is applied to crystalline silicon solar cells, and the conversion efficiency has been successfully improved by 2%. This is the research result of Professor Hasegawa Jingu of the Graduate School of Engineering at Hokkaido University. It is said that the increase is 2% as the world's highest record.
Chameleon luminous body that efficiently converts ultraviolet light into red light (Source: Hokkaido University)
Chameleon luminophores are molecular luminophores containing the rare earth element cerium, which was released in May 2013. The special protective film (EVA film) posted on the original crystalline silicon solar panel was added with a chameleon emitter that can efficiently convert ultraviolet light into red light; derivatives. According to the report, the film is attached to the surface of a solar panel, and the chameleon luminaire absorbs ultraviolet light and emits light in the red region. Since the light absorption range of the crystalline silicon solar cell is enlarged, the conversion efficiency is improved by 2%.
Module sample (Source: Hokkaido University)
Films can be attached to crystalline silicon solar panels that are already in use worldwide. According to the release, the endurance test confirmed that the conversion efficiency improvement effect is believed to be effective for 10 years, and it is worth looking forward to as a practical component for improving the conversion efficiency of crystalline silicon solar cells.
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