Comprehensive analysis of novel In2GeX6 (X = Cl, Br) double perovskites: Structural, electronic, optical, mechanical, phonon, population analyses and solar cell performance via DFT and SCAPS-1D

Imtiaz Ahamed Apon^a, Md. Alamgir Hossain, Rifat Rafiu^b, Md. Sakib Hasan Saikot, Md. Azizur Rahman, Jothi Ramalingam Rajabathar^c, Imed Boukhris^d, Hind Mohammed Albalawi^e, Karim Kriaa^f, Noureddine Ali Elboughdiri^g

1. ^aDepartment of Electrical and Electronic Engineering, Bangladesh Army University of Science and Technology (BAUST), Saidpur, 5311, Bangladesh
2. ^bDepartment of Materials Science and Engineering, Khulna University of Engineering & Technology (KUET), Khulna, 9203, Bangladesh
3. ^cCenter for Global Health Research, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, India
4. ^dDepartment of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia
5. ^eDepartment of Physics, College of Sciences, Princess Nourah bint Abdulrahman University (PNU), P.O. Box 84428, Riyadh 11671, Saudi Arabia
6. ^fChemical Engineering Department, College of Engineering, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11432, Saudi Arabia
7. ^gChemical Engineering Department, College of Engineering, University of Ha’il, P.O. Box 2440, Ha’il 81441, Saudi Arabia