Exploring the underlying mechanisms behind the increased far infrared radiation properties of perovskite-type Ce/Mn co-doped ceramics
Source abstract
Abstract
In this study, we report a solid-state synthesis of a novel Ce/Mn co-doped LaAlO ceramic with high far infrared emissivity. After detailed analysis of the infrared absorption and emission of the Ce/Mn co-doped LaAlO ceramics, we find that the synergistic effect of Ce/Mn co-doping is the key factor to promoting the infrared emission properties of the co-doped perovskite-type ceramic in 8–14 μm range. Compared with the pristine LaAlO, LaCeMnAlO sample displays the highest emissivity as high as 0.915. From the structural analysis, it is found that the occupation of irregular polyhedrons (A-site) by Ce ion induces the generation of Mn in the octahedral center (B-site), leading to the unit cell volume expansion and obvious lattice deformation. These structural alterations consequently improve the vibration of Al–O–Mn and Mn–O–Mn for enhancement of infrared radiation performance. The perovskite-type ceramic, which exhibits a high far infrared emissivity, displays a promising future in energy-saving applications.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Thermal Radiation and Cooling Technologies · Luminescence Properties of Advanced Materials · Atmospheric aerosols and clouds
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
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