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MM: Fachverband Metall- und Materialphysik
MM 14: Materials for Storage and Conversion of Energy IV
MM 14.1: Vortrag
Montag, 18. März 2024, 16:45–17:00, C 264
Pressure Induced Oscillating Band-gap Variation in KBaTeSbO6 : Towards Transparent Solar Cell — •Manasa Gattavadi Basavarajappa1, Diwakar Singh2, and Sudip Chakraborty1 — 1Harish-Chandra Research Institute,Chhatnag Road, Jhunsi, Prayagraj, India 211019 — 2University of Duisburg-Essen, Essen, North Rhine-Westphalia, Germany
Recently, double oxide perovskites have emerged as a group of promising materials for wide range of applications due to their unique electronic and optical properties. There has been substantial studies establishing the fact that employment of external stimuli such as pressure on these materials may lead to drastic change in their properties, further enhancing their usefulness.
In this work, we have studied various pressure-induced structural, electronic and optical properties in an extended double oxide perovskite, KBaTeSbO6. Our study reveals the occurrence of band-gap tuning via blue shift followed by a red shift in KBaTeSbO6 with external pressure. This transition leads to modified electronic properties. We observed distinct structural changes under pressure such as lattice compression, distortion and phase transition. Our results indicates that the pressure-induced changes in band structure and lattice parameters directly affects the optical properties, resulting in altered absorption and reflection spectra. In order to validate the realisation of the material, we have also studied the formation and thermodynamic stability of the material under various pressure.