en گروه سرامیک Ceramic Materials and Engineering Research Paper Research Paper <span style="font-size:11pt"><span style="text-justify:inter-ideograph"><span style="line-height:normal"><span style="font-family:Calibri,sans-serif"><i><span new="" roman="" style="font-family:" times="">Perovskite materials have accumulated considerable attention in recent years for their exceptional electro-optical properties, creating them rising candidates for various uses in the fields of photovoltaics, light-emitting devices, and beyond. Among these perovskite materials, CsPbI₃ stands out as a notable example due to its remarkable stability, tunable bandgap, and efficient light-emitting properties. The crystal structure, composition, and introductory properties of CsPbI₃ perovskite using density functional theorem (DFT) being focused. In detailed exploration of Electronic property, Elastic property, Optical property, Population analysis, and shedding light on the unique attributes of this material highlighted this study. To do above computation we have used CASTEP in Material Studio.</span></i><i><span style="font-size:12.0pt"><span style="background:white"><span style="font-family:"Times New Roman",serif"></span></span></span></i></span></span></span></span><br> &nbsp; Density functional theory,Structural Properties,Electronic Properties,Optical Properties,Elasticity. 83 90 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-5635-1&slc_lang=en&sid=1 Mohammad Abdullah Al Asad dr.asad.eee@gmail.com 1800319475328460021043 1800319475328460021043 Yes Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj Hasan Ridoy hasanridoy17eee021bsmrstu@gmail.com 1800319475328460021044 1800319475328460021044 No Bangabandhu Sheikh Mujibur Rahman Science and Technology University Md. Shuzon Ali sali4222@gmail.com 1800319475328460021045 1800319475328460021045 No Bangabandhu Sheikh Mujibur Rahman Science and Technology University Mst. Jeba Maimuna maimunajeba279@gmail.com 1800319475328460021046 1800319475328460021046 No Dept. of Physics, Gopalganj Science and Technology University