Research Article
Copper Incorporation into CdS Thin Films by Ionic Exchange in an Aqueous Solution Process at Room Temperature
Table 2
Summary of centers and FWHM (in parentheses) for the different optical vibrational modes observed in all set Raman spectra.
| | Sample | Fundamental optical phonon | First overtone | | E1(TO) | E2(SO) | E1(LO) | E2 (m) | E2 (m) | E2 (m) | 2E1(LO) | 2E2 (m) | 2E2 (m) |
| | L0 | 231.9 (48.4) | 255.0 (43.2) | 300.0 (29.8) | 344.0 (31.6) | 375.4 (21.3) | 559.1 (36.2) | 598.1 (41.0) | 629.5 (41.6) | 676.1 (40.0) | | L1 | 234.1 (34.8) | 257.0 (34.5) | 301.0 (28.1) | 344.7 (26.8) | 377.0 (26.9) | 559.3 (34.7) | 598.7 (35.2) | 609.8 (38.6) | 661.2 (45.4) | | L2 | 235.4 (37.2) | 258.2 (33.8) | 300.7 (26.2) | 343.9 (38.0) | 379.9 (28.5) | 557.6 (35.3) | 599.8 (41.0) | 635.6 (41.2) | 675.7 (36.4) | | L3 | 238.6 (44.3) | 255.6 (25.5) | 300.5 (25.6) | 341.2 (35.3) | 376.0 (25.6) | 558.6 (37.8) | 599.4 (39.1) | 631.8 (35.4) | 665.4 (34.4) | | L4 | 235.8 (33.0) | 253.6 (43.2) | 301.0 (29.5) | 344.4 (31.9) | 377.2 (26.3) | 562.2 (30.6) | 598.7 (39.4) | 630.4 (41.8) | 672.6 (34.2) |
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