Research Article
A Dye-Sensitized Solar Cell Using a Composite of PEDOT:PSS and Carbon Derived from Human Hair for a Counter Electrode
Table 1
The peak assignment and elemental composition derived from XPS spectra.
| | Peak | Binding energy (eV) | Assignment | Element composition (at.%) | Fraction of species (%) |
| | C 1s | 284.9 | Sp2 C-C | | 58.3 | | 286.2 | Sp3 C-C, C-N | | 23.1 | | 287.6 | -C=O, C=N | 80.22 | 8.8 | | 288.8 | O=C-O | | 6.9 | | 290.4 | O=C-OH | | 2.9 |
| | O 1s | 530.9 | C=O | | 30.0 | | 532.0 | O-C-O | 9.98 | 34.4 | | 533.1 | O-C=O | | 29.1 | | 534.4 | Amide | | 6.5 |
| | N 1s | 398.7 | Pyridinic N (N-6) | | 43.4 | | 400.1 | Pyrrolic N (N-5) | 9.47 | 36.8 | | 401.2 | Quaternary N (N-Q) | | 19.8 |
| | S 2p | 163.9 | Thiophenic (C-S-C) 3/2 | 0.15 | 57.4 | | 164.9 | Thiophenic (C-S-C) 1/2 | | 42.6 |
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