Unlocking high absorption efficiency of Cr3+ ions in magnesium titanates with intrinsically high octahedron distortion

Key Points

• The aim is to improve the light absorption efficiency of Cr3+ ions in magnesium titanates through octahedral distortion.
• Selected magnesium titanate (MgTiO3) samples with high octahedral distortion.
• Evaluated the light absorbance of Cr3+ ions under varying conditions.
• Utilized spectroscopic techniques to assess the effects on emission efficiency.
• MgTiO3 shows significantly enhanced light absorptivity for Cr3+ ions.
• The absorption efficiency in highly distorted samples is much higher than in less distorted ones.
• Findings suggest that octahedral distortion plays a critical role in enhancing visibility in near-infrared emissions.