Find in Library

An efficient quantum cutting mechanism was observed in a system comprising <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mrow><mi mathvariant="normal">T</mi><mi mathvariant="normal">b</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup><mo>−</mo><msup><mrow><mi mathvariant="normal">Y</mi><mi mathvariant="normal">b</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup></mrow></semantics></math></inline-formula> codoped silica hafnia glass and glass-ceramic. Thin films were deposited on silicon substrates using the dip-coating method and photoluminescence dynamics revealed a quantum efficiency of up to 179% at 980 nm. These films can efficiently convert light to lower energy levels and can easily be integrated into silicon-based solar cells, increasing their photoelectric conversion efficiency at a low cost. This was demonstrated through electrical characterization, which revealed a boost in solar cell efficiency when the film was utilized. It was specifically noted that the efficiency of Si solar cells increased by 10.79% and 10.78% when covered with 70SiO₂<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>−</mo></mrow></semantics></math></inline-formula>30HfO₂<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>−</mo><mn>3</mn><msup><mrow><mi mathvariant="normal">T</mi><mi mathvariant="normal">b</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup><mo>−</mo><mn>12</mn><msup><mrow><mi mathvariant="normal">Y</mi><mi mathvariant="normal">b</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup></mrow></semantics></math></inline-formula> glass and glass ceramic, respectively. Furthermore, an evaluation of the additional external quantum efficiency, derived from this optical system, revealed an improvement ranging from 2.64% to 3.44%. This finding highlights the enhanced light conversion capabilities of the quantum cutting mechanism within the system.