April 1, 2023


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Solar cells produced on new principles. We know their performance

It amounted to about 27.7%. The scientists involved in the entire project represent the Indian Institute of Technology Indore. Thanks to the method proposed by them, it should be possible to produce thin film solar cells based on copper bismuth oxide (CuBi).2Around4).

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As explained by the lead author of the study, Vishesh Manjunath, two reports have appeared previously of this compound related to photovoltaics. In the first CuBi2Around4 For the manufacture of dye-sensitized solar cells. In the second, it is designed using a complex device architecture.

What distinguishes the new method from the previous one is the design of the cells, which is similar to that of the simpler device for perovskite solar cells. Moreover, the cost of these cells can be much lower than that of conventional crystalline silicon cells. All this thanks to the available CuBi2O4 synthesis protocols. The researchers also added that the synthesis of CuBi thin films2Around4 With a low defect density that needs to be explored further and the most cost-effective process will be adapted for mass production under these conditions.

In their current form, thin-film solar cells achieved an efficiency of 27.7%.

In the course of the research, the team members designed a cell with a substrate made of perfluorinated tin oxide glass, various types of dielectric layers, and a CuBi absorber.2Around4 and a gold-based metallic contact. The plan is for cells to absorb blue light and other high-energy light at the interface. On the other hand, low-energy light, such as red light, will be absorbed when the thickness of the absorber is increased.

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So far the efficiency is 27.7%, which was achieved by building a cell with an insulating layer made of tin sulfide. The model with a tungsten disulfide dielectric layer and an enhanced light absorbance CuBi2O4 with a thickness of 900 nm gave a result of 22.84%. Detailed arrangements in this regard have been published in Solar energy.