SSolar Energy Materials and Solar Cells3/29/2026Design and optimization of highly efficient and lead-free Cs2TeI6-based double perovskite solar cells: Insights from DFT and SCAPS-1DSaad Ullah·Masoud Al-Rasheidi·Muhammad Kaleem·Firoz Khan·Amna Ali NasirRead at Solar Energy Materials and Solar CellsTagsPerovskite Materials and ApplicationsElectrical and Electronic EngineeringPerovskite (structure)Solar energySolar cellDensity functional theoryPhotovoltaic systemPhotovoltaics