Investigation of Mn²⁺ dopant-induced crystal defects in photoactive CuSe nanosheets for enhanced visible-NIR range absorption and natural solar-driven photocatalysis.

ABSTRACT: Limited light absorption and inefficient charge separation remain key challenges in achieving effective natural solar-driven photocatalysis using low-bandgap CuSe nanosheets (NSs). Introducing crystal defects within a certain concentration range has been recognized as an effective strategy to tackle these issues and to design a high-performance photocatalyst. Herein, Mn²⁺ is uniformly incorporated into the CuSe lattice, inducing crystal defects, resulting in efficient natural solar spectrum-driven photocatalysis. Photoluminescence (PL) spectroscopy revealed a systematic broadening in the full width at half maximum (FWHM) of defect-related emissions with increasing concentration of Mn-dopants, indicating the formation of defect states. Meanwhile, the conventional absorption spect

SUBMITTER: Kumar V 

PROVIDER: S-EPMC12352628 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature