Abstract
Although lead halide perovskite nanocrystals (PNCs) materials exhibit excellent optoelectronic properties, their instability and toxicity seriously limit their wide-spread application. Herein, we described a new type of highly-luminescent Sb3+-doped dual-phase CsPb2Br5/CsPbBr3 PNCs material, synthesized by a modified ligand-assisted re-precipitation (LARP) method at room temperature. The obtained Sb3+-doped dual-phase PNCs achieve high photoluminescence quantum yields (PLQYs) and excellent light, water, and thermal stability. Additionally, the fast anion exchange involving Sb3+-doped dual-phase PNCs effectively extends their photoluminescence across the entire visible spectral region. The large-scale synthesis and optical tunability of low-toxicity Sb3+-doped dual-phase CsPb2Br5/CsPbBr3 PNCs are advantageous for future applications in optoelectronic devices.
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