Conducting Polymers Boost PIERS Spectroscopy Signal Five-Fold: IOPmaterials Raman RamanSpectra RamanSpectroscopy spectroscopy plasmonic semiconductor nanomaterials PIERS
By Shaheer RehanJul 21 2022Reviewed by Megan Craig, M.Sc. Semiconductors and plasmonic nanomaterials can be coupled to develop photocatalytic and detection systems. Nanoscale composites containing semiconductors and metals can improve plasmon-assisted spectroscopy and boost catalytic performance by modulating the charge states of the metals.
The Raman signal produces a distinct spectrum for molecules and is beneficial for analytical purposes. However, Raman scattering has weaknesses and requires considerable improvement before its widespread use in analytical studies can be realized. Enhancing Raman Scatter A significantly amplified electromagnetic field is generated on the metallic nanostructure surfaces by excitation of localized surface plasmons. A chemical process or an EM technique may improve the Raman effect.
PIERS can be used for detecting minute amounts of different small-molecule analytes for a variety of semiconducting materials. Along with PIERS methods, semiconducting materials may build junctions between metals and themselves, allowing efficient carrier segregation via a Schottky junction. The P3HT polymer exhibits great charge movement in highly crystallized sheets and serves as a donor of electrons in the photo-excitation phase. Exciton breakdown is made possible by the complementary PCBM. When used with gold or silver nanoparticles, the P3HT: PCBM polymer combination creates a Schottky junction.
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