The book presents the select proceedings of 2nd International Conference on Advanced Functional Materials and Devices (AFMD-2023). It covers the latest research in the area of functional materials. Various topics covered in this book include 2D materials, biomaterials, materials for environmental studies, DFT and solar simulation of materials, perovskite and double perovskite materials, luminescent materials, smart materials, materials for energy conversion and storage, smart materials, advanced functional materials, polymeric materials, composites, liquid crystals, materials for sustainable development, nanomaterials and thin films, smart devices and quantum dots synthesis technique, and characterization tools with application in smart devices. This book is for researchers and professionals working on various functional materials for device applications.