@article{ali_islam_kumer_hossain_chakma_howlader_islam_hossain_2021,  title={Investigation of Structural, Electronic and Optical Properties of Na<sub>2</sub>InAgCl<sub>6</sub>, K<sub>2</sub>InAgCl<sub>6</sub>, and Rb<sub>2</sub>InAgCl<sub>6</sub> Lead-Free Halide Double Perovskites Regarding with Cs<sub>2</sub>InAgCl<sub>6</sub> Perovskites Cell and a Comparative Study by DFT Functionals},  volume={24},  ISSN={1516-1439},  url={https://doi.org/10.1590/1980-5373-MR-2021-0086},  DOI={10.1590/1980-5373-MR-2021-0086},  number={6},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Ali, Md. Hazrat and Islam, Mohammad Jahidul and Kumer, Ajoy and Hossain, Md. Sayed and Chakma, Unesco and Howlader, Debashis and Islam, Md. Tawhidul and Hossain, Tomal},  year={2021},  pages={e20210086} }