Table 4.
Solar cell properties for best performing cells for each CNT sample in bold text, average properties and error values for sets of three (two for the Carbon Allotropes DWCNT) cells in regular text. JSC: Short circuit current density. VOC: Open circuit voltage. PCE: Power conversion efficiency. FF: fill factor.
| SWCNT-1 | SWCNT-2 | DWCNT | MWCNT | |
|---|---|---|---|---|
| JSC (mA cm−2) |
24.7;
24 ± 4.3% |
22.5;
22.2 ± 1.5% |
19.5;
18.9 ± 4.5% |
18.4;
18.1 ± 2.5% |
| VOC (V) |
0.468;
0.427 ± 9.17% |
0.483;
0.449 ± 7.8% |
0.58;
0.553 ± 1.3% |
0.533;
0.465 ± 17.6% |
| FF |
0.41;
0.41 ± 8.64% |
0.41;
0.39 ± 5.13% |
0.40;
0.40 ± 0.0% |
0.38;
0.35 ± 8.7% |
| PCE% |
4.79;
4.21 ± 18.74% |
4.45;
3.90 ± 13.8% |
4.31;
4.14 ± 6.0% |
3.78;
3.03 ± 28.2% |
| Rshunt (Ohm) |
6.42 × 103;
2.81 × 103 ± 112% |
1.06 × 103;
7.91 × 102 ± 30.2% |
8.42 × 102;
9.61 × 102 ± 17.5% |
8.07 × 102;
6.65 × 102 ± 24.8% |
| Rseries (Ohm) |
1.21 × 102;
1.08 × 102 ± 16.3% |
1.11 × 102;
1.12 × 102 ± 9.4% |
1.44 × 102;
1.57 × 102 ± 11.3% |
1.64 × 102;
1.68 × 102 ± 2.1% |
| Diode Ideality |
2.37; 3.27 ± 23.96% |
1.98; 1.95 ± 16.4% |
1.67; 1.93 ± 19.3% |
1.94; 2.75 ± 33.2% |
| JSAT (mA cm−2) |
2.20 × 10−3;
2.45 × 10−1 ± 106% |
4.64 × 10−4;
1.81 × 10−3 ± 145% |
1.35 × 10−5;
1.26 × 10−4 ± 126% |
1.31 × 10−4;
1.39 × 10−1 ± 171% |
| Film Transmittance (%) | 60 | 65 | 58 | 60 |
| Final Sheet Resistance of Film (Ω·sq−1) | 543 ± 2.9% | 2410 ± 12% | 2550 ± 38% | 2890 ± 27% |