Abstract
The photoluminescence intensity at 580 nm for 2-3 nm ZnS doped with (Formula presented) (ZnS:Mn) increases after modification by acrylic acid (AA). (Formula presented) electronic states are examined by electron paramagnetic resonance (EPR) spectroscopy. Signal I with (Formula presented) and hyperfine coupling constant (Formula presented) and signal II with (Formula presented) and (Formula presented) are observed in the EPR spectrum of unmodified ZnS:Mn. Signal I is assigned to isolated (Formula presented) ions substitutionally incorporated in cubic ZnS. The intensity of signal II relative to signal I increases with decreasing the S/Zn ratio, while its intensity decreases after modification of the ZnS:Mn nanoparticles by AA. Signal II is, therefore, attributed to the (Formula presented) ions near the surface.
Original language | English |
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Pages (from-to) | 6444-6445 |
Number of pages | 2 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 56 |
Issue number | 11 |
DOIs | |
Publication status | Published - 1997 Jan 1 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics