Raman Spectra of Quaternary CdS_1−x−ySe_xTe_y Nanocrystals Embedded in Borosilicate Glass

Figure 1

First-order Raman spectra of borosilicate glass-embedded CdS_{1−𝑥−𝑦}Se_𝑥Te_𝑦 nanocrystals synthesized with roughly equal content of Se and Te (𝑥≈𝑦) and a broad variation of S content (increasing from top to bottom). The spectra were measured at 295 K with excitation at 𝜆_exc = 647.1 nm. Vertical short-dashed lines correspond to the LO phonon frequencies of pure CdTe (162 cm⁻¹), CdSe (208 cm⁻¹), and CdS (305 cm⁻¹) crystals.