This book is part of a four-volume set that provides students, engineers, and researchers with advanced knowledge on the design and development of architectured materials for controlling radiative heat transfer in energy applications. These applications include concentrated solar power, radiative cooling, space propulsion, and material transformation in manufacturing industries. The four monographs are based on 14 courses delivered during the MATTER (Architectured Materials for the Control of Radiative Heat Transfer: From Material Elaboration Processes to Industrial Applications) CNRS thematic school, held from May 10–15, 2022, and organized by the French research network TAMARYS. This third monograph focuses on the fabrication of dense and porous ceramics as well as thin films with controlled optical properties. It covers fundamental principles of ceramic materials and processing, including sintering techniques and the relationship between microstructure, processing methods, and thermal properties. Additionally, it explores deposition processes for thin films designed to regulate radiative heat transfer. Practical applications in the field of renewable energy are also discussed.