Development of Hydrogenated Microcrystalline Silicon-Germanium Alloys for Improving Long-Wavelength Absorption in Si-Based Thin-Film Solar Cells

Table 1

Properties of μc-Si_1−𝑥Ge_𝑥:H absorber and the corresponding performance of single-junction cells with different 𝑅_H2 of 88.6, 94.9, 101.3, 124.1. The 𝑅_GeH4 of these cells was kept at 5.0%.

𝑅H2	𝑋𝐶 (%)	𝐸04 (eV)	𝑉OC (mV)	𝐽SC (mA/cm^2)	FF (%)	Eff. (%)
88.6	44.0	1.91	485	17.17	58.9	4.90
94.9	52.8	1.90	475	18.61	62.0	5.48
101.3	59.1	1.89	460	18.80	62.4	5.40
124.1	70.6	1.87	430	19.25	59.4	4.91