Fig. 5: Certified SHJ solar cell with a PCE of 26.74%.

a, Light I–V and power–voltage (P–V) curves of the record front–back contact silicon solar cell. b, External quantum efficiency (EQE) spectrum and analysis of the optical loss, including reflection (R) and absorption (A). The maximal EQE (Green 4n2 limit72) for 130-μm-thick n-Si excluding electrode shading is also reported for comparison.