Specialists from the Ural Federal University (UrFU) have improved the production technology of thin-film materials based on lead sulfide, which will allow solar panels and photovoltaic devices to function effectively even at minimal light levels. The innovation is based on modifying the composition of reaction mixtures and introducing combined additives that enhance sensitivity to light.
The scientists applied the method of chemical deposition from aqueous solutions, supplementing the process with the introduction of potassium permanganate and ammonium iodide. This combination increased the photoresponse of the material in the visible and infrared ranges. "Modified films interact more actively with photons, which is critical for devices operating in conditions of dim or scattered light," explained Larisa Maskayeva, Professor of the Department of Physical and Colloid Chemistry at UrFU.
Experiments have shown that additives not only enhance radiation absorption but also improve the conversion of light into an electrical signal. This opens up prospects for creating highly sensitive photodetectors, night vision systems, and environmental monitoring sensors. For example, such materials can be used in thermal guidance devices or for remote analysis of soil and water body conditions.
The UrFU development has already attracted the attention of industrial partners interested in the production of energy-efficient solutions. The university, participating in the "Priority-2030" programs and the Ural REC, plans to scale the technology jointly with enterprises in the real sector.
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