Table 5.
Comparison of our inverted pyramid PhC IBC solar cells with the hypothetical Lambertian solar cell at 25 °C.
| Cell type/light trapping and transport model | Cell-thickness (μm) | Bulk recombination model | Surface recombination | VOC(V) | JSC(mA/cm2) | FF(%) | η(%) |
|---|---|---|---|---|---|---|---|
| Hypothetical Lambertian, undoped | 110 | Improved Auger11, τSRH = ∞ | SRV = 0 | 0.7613 | 43.31 | 89.26 | 29.43 |
| Hypothetical Lambertian, doping profiles in Table 4 | 90 | Improved Auger11, τSRH = 10 ms | Contact SRVs 10 cm/s | 0.7535 | 43.10 | 87.34 | 28.37 |
| Inverted pyramid PhC, 2D transport | |||||||
| (design parameters in Table 4) | 15 | Improved Auger11, τSRH = 10 ms | Contact SRVs 10 cm/s | 0.7940 | 44.39 | 88.17 | 31.07 |
| Inverted pyramid PhC, 2D transport | |||||||
| (design parameters in Table 4) | 15 | Improved Auger11, τSRH = 10 ms | Contact SRVs 100 cm/s | 0.7908 | 44.39 | 87.67 | 30.77 |
The inverted pyramid PhC cells employ wave-interference based light trapping. The design parameters of the PhC IBC solar cells are given in Table 4. All cells include band gap narrowing and optical absorption throughout the 300–1200 nm wavelength range.