Photoelectric Studies as the Key to Understanding the Nonradiative Processes in Chromium Activated NIR Materials.

ABSTRACT: In this study, we synthesized a series of Ga_1.98-xIn_xO₃:0.02Cr³⁺ materials with varying x values from 0.0 to 1.0, focusing on their broadband near-infrared emission and photoelectric properties. Interestingly, photocurrent excitation spectra exhibited behavior consistent with the absorption spectra, indicating the promotion of carriers into the band structure by the ⁴T₁, and ⁴T₂ states of Cr³⁺ ions. This association suggests that photocurrent in this material is influenced not only by valence to conduction band transitions but also by transitions involving Cr³⁺ dopants. Our investigation of luminescence quenching mechanisms revealed that nonradiative processes

SUBMITTER: Majewska N 

PROVIDER: S-EPMC11328124 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature