主题词：Perovskite Materials and Applications; Conducting polymers and applications; Quantum Dots Synthesis And Properties; Chalcogenide Semiconductor Thin Films; Organic Electronics and Photovoltaics; Advanced Photocatalysis Techniques; Silicon and Solar Cell Technologies; Thin-Film Transistor Technologies; TiO2 Photocatalysis and Solar Cells; solar cell performance optimization; Copper-based nanomaterials and applications; Organic Light-Emitting Diodes Research; Semiconductor materials and interfaces; Solar-Powered Water Purification Methods; Solar Thermal and Photovoltaic Systems; Solid-state spectroscopy and crystallography; Covalent Organic Framework Applications; Photovoltaic System Optimization Techniques; Nanowire Synthesis and Applications; Advanced battery technologies research; 2D Materials and Applications; Silicon Nanostructures and Photoluminescence; ZnO doping and properties; Gas Sensing Nanomaterials and Sensors; Smart Cities and Technologies