Research Article
Influence of TiO2 Nanocrystals Fabricating Dye-Sensitized Solar Cell on the Absorption Spectra of N719 Sensitizer
Table 1
Morphology and surface area of the nanocrystals and the optical data of the N719 dye adsorbed onto nanocrystals films.
| Sample | Morphology | SBET (m2/g) | UV-vis abs. (nm)b |
FT-IR vibration band wavenumber (cm−1)c | MLCT | |
| ST01 | Spherical | 349 | 398sh | | 2105m 1657vs 1608vs 1541m 1467w 1430w 1403w | 523 | | 1373vs 1262vw 1235w 1165w 1107vw | ST111 | Spherical | 312 | 398sh | | 2105s 1657vs 1608vs 1542m 1466vw 1429m | 537 | | 1402w 1372vs 1261vw 1236w 1166m 1109vw | QTBA | Quadrate | 131 | 395sh | | 2103w 1657vs 1607vs 1540m 1467w 1429w 1402w | | 1372vs 1262vw 1236w 1167w 1108vw | QPA | Quadrate | 66 | 536 | | 2104w 1713vw 1614vs 1544m 1466vw 1430m | 1403m 1384vs 1262w 1231vw 1112w | LPA | Leaflike | 35 | 598 | | 2925s 2855m 2343w 2104m 1741m 1619s 1542m | 1466w 1436w 1402m 1379s 1234m 1165w 1108w | QTBA-LPA | | | 631 | | | QPA-LPA | | | 571 | | | N719a | | | 390 | 215 253sh 313 | 2964s 2876w 2104vs 1714s 1611s 1543m 1467m | 531 | | 1437vw 1406m 1370s 1237s 1149vw 1021w |
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aUV-vis absorption measured in ethanol, bsh: shoulder, cvs: very strong; s: strong; m: medium; w: weak; vw: very weak.
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