Скачать или смотреть Modified Synthesis of Cs4PbBr6 for Enhanced Purity & Quantum Yield

Elshaimaa Darwish presents Modified Synthesis of Cs4PbBr6 for Enhanced Purity and Quantum Yield and for Exploring Its Potential as a High Stokes Shift Material for Down-Conversion in Solar Cells

Recent years have seen a continuous rise in energy consumption mostly driven by the expansion of human activity. Although silicon solar cells provide an appealing renewable energy source, there is still room for improvement in their external quantum efficiency (EQE). One approach to achieve this is by implementing a layer that downshifts the energy of photons. The present study focuses on the application of Cs4PbBr6 as a downshifting layer. Cs4PbBr6 is synthesised as colloidal nanoparticles, and various modifications are implemented in the synthesis procedure. These modifications lead to an increase in the photoluminescence quantum yield, improvement in the particle size distribution, and reduction of CsBr impurities that are generated as a byproduct during the synthesis of Cs4PbBr6. Implementing the modified particles as thin films on the surface of Si solar cells results in an improvement of the electron quantum efficiency (EQE) of the solar cells compared to the unmodified particles.