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Fabrication of MAPbBr3@Ag Core–Shell Nanostructures with High Sensitivity for Surface-Enhanced Raman Scattering
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DOI：10.1002/adpr.202500143.png)
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Abstract
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Combining in situ growth with sputtering deposition techniques, MAPbBr3@Ag core–shell surface-enhanced Raman scattering (SERS) substrates are fabricated. The nanostructures of MAPbBr3@Ag facilitate strong localized surface plasmon resonance responses, effectively enhancing the SERS performance. Furthermore, charge transfer between the MAPbBr3@Ag core–shell structure and methylene blue (MB) leads to chemical enhancement—a key factor in boosting Raman scattering signals. The constructed MAPbBr3@Ag core–shell SERS platform achieves a detection limit of 10−10 M for MB with an enhancement factor of 3.27×107. Finite-difference time-domain simulations correlate well with experimental results.
Keywords:
Ag
MAPbBr3
methylene blue
nanostructure-based films
perovskites
surface-enhanced Raman scattering
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