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Solar cells: Layer of three crystals produces a thousand times more power The photovoltaic effect of ferroelectric crystals can be increased by a factor of 1,000 if three different materials are arranged periodically in a lattice. This has been revealed in a study by researchers at Martin Luther University Halle-Wittenberg (MLU). They achieved this by creating crystalline layers of barium titanate, strontium titanate and calcium titanate which they alternately placed on top of one another. Their findings, which could significantly increase the efficiency of solar cells, were published in the journal “Science Advances”.  Most solar cells are currently silicon based; however, their efficiency is limited. This has prompted researchers to examine new materials, such as ferroelectrics like barium titanate, a mixed oxide made of barium and titanium. “Ferroelectric means that the material has spatially separated positive and negative charges,” explai

Aakash bhatnagarYeseul yunMartin luther university halle wittenbergCentre for innovation competence sili nanoInnovation competenceமார்டின் லூதர் பல்கலைக்கழகம் ஹால் விட்டன்பெர்க்மையம் க்கு கண்டுபிடிப்பு திறன் சிலி நானோகண்டுபிடிப்பு திறன்