- Global innovations in solar panels
Chinese scientists create solar panels that work with rain or fog
"The aim is to increase the conversion efficiency of direct light until there is more, generating enough energy in low light conditions such as rain, fog, fog or at night," Professor Tang Qunwei of The Oceanic University of China, one of the project leaders. Another team led by Professor Yang Peizhi of the Yunnan Pedagogical University is also involved in the development of these solar panels, which according to official Chinese press may be a "photovoltaic revolution."
The main innovation of these panels is the use of a new material called LPP (long persistence phosphor) that can store solar energy during the day for it to be harvested during the night. "Only partially visible light can be absorbed and converted into electricity, but the LPP can store solar energy from non-absorbed and near-infrared light," Tang said, "enabling continuous day and night power generation" .
These advances have been published in scientific journals in the United States and Europe, which have highlighted the cost decrease that solar energy could have thanks to these types of solar panels. Much of the energy consumed by China comes from fossil fuels (coal and oil), but at the same time the world's second largest economy is the country with the most installed solar power plants (with capacity for more than 77 gigawatts).
Japanese creates the world's most efficient solar panel
Kunta Yoshikawa presented the first plate made with new materials, which exceeds 26% efficiency to convert sunlight into electricity. The previous record was at 25.6%. A new study published in the journal Natura Energy discovered the key to solve one of the most common problems of solar energy: efficiency. Generally, in the systems that act with natural light, the waste was one of the great unknowns.
But this research showed that silicon panels developed in Japan are the most effective in the world. Kunta Yoshikawa, an expert in this field, presented the first plate made with this material, which exceeds 26% efficiency to convert sunlight into electricity. This represents a remarkable improvement of 2.7% of photoconversion compared to the previous record, which was 25.6%. The creator used a layer of monocrystalline silicon with another layer of amorphous silicon, a design that increases light uptake and conversion to electric light.
However, the properties of this technology should be improved over time, as, according to the study's experts, it is estimated that it could lead to energy efficiency of 29% in the coming years. With the increase in the efficiency of solar panels in the world, the business of non-conventional energy sources that face the global problem of change becomes increasingly competitive.