A lead-based perovskite single crystal was subjected to high-energy laser etching, and subsequent XPS spectral analysis of the etched region revealed the emergence of a loss feature peak (binding energy = 151 eV). Is the occurrence of this peak attributable to structural degradation of the crystal induced by laser damage? Does the intensity of the loss feature peak exhibit a correlation with the degree of structural deterioration? Could provide relevant references addressing this phenomenon?
The loss feature peak in XPS spectra after laser etching of lead-based perovskites likely results from structural degradation caused by laser damage. The peak intensity may correlate with the degree of structural deterioration, reflecting changes in electronic structure or defect states.
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