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Scientists at the National University of Technology (MIT) and colleagues from the Fromkin Institute of Physical Chemistry and Electrical Chemistry and the Italian University of Tor Varegata have succeeded in achieving great stability and efficiency of pyrofoxite elements, which are the promising foundation of solar cells thanks to a layer of copper iodide.
Pyrofscite is a new class of semiconductor optoelectronics, which is an effective alternative to silicon in the production of solar cells. In this context, scientists decided to fix the main flaw, and this is the case of instability. The primary role of methylamine-lead-iodine molecule 3 has been played (MAPbI₃)
Daniel Saranin, a researcher at the promising solar laboratory at the University of Mississauga, said:
"A layer crystallizes MAPbI₃ Photovoltaic on the surface of the carrier layer, which carries a positive charge (in our case, nickel oxide,NiO ). As is known, when subjected to continuous lighting and subsequent heating of pyrofscate solar cells With a light layer MAPbI₃, Free iodine and hydrodic acid are produced which damage the interface between the peruvsite layers, which make a lot of defects and greatly reduce the stability and performance of the device.
To get rid of this problem, scientists used an extra layer of copper iodide, talking about semiconductors between pyrophysics and an elementNiO Transporter HTL. This article, according to researcher Daniel Saranin does not contain the property of rapid deformation under the influence of light, accompanied by the secretion of iodine compounds similar to the material used peruvsite. Moreover, the class enabled p Additive enhancement of the positive charge group and significantly reduce the amount of defects when moving between layers of image absorption and layers HTL.
As scientists have pointed out, the process of stabilizing the pyrophysical element in a structure and composition similar to a light-interacting layer through the extra organic layer is not a new idea in science. However, scientists believe that other research teams have used expensive and complex materials in the process of integrating substances (derivatives of the mineral-organic compound, low-molecular organic semiconductors).
Scientists at the University of Mississippi and colleagues first used copper iodide as a readily accessible material. According to the researchers' observations, improving the structure of the pyrufskite component has increased its work stability by 40% and increased the efficiency factor to 15.2%.
According to the designers' assertion, the thickness of the final product is less than 1 micron, which is ten times less than that of silicon solar cells. Next, scientists plan to create a similar layer to stabilize the transport of negative charges, as well as work to expand the technology to reach the sizes of standard models.
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