Improvement of a-Si1−xGex:H single-junction thin-film solar cell performance by bandgap profiling techniques

Ag nanoparticle enhanced light trapping in hydrogenated amorphous silicon germanium solar cells on flexible stainless steel substrate

“…With the optimized cell parameters, there is no obvious difference in V oc and FF, therefore, higher cell efficiency is harvested. It should be noted that the present FF of the single junction cells are relatively low comparing to previous reports [28,29] due to poor shunt resistance.…”

“…Unfortunately, these promising results were achieved using rigid glass substrates, it would be more useful to recognize it using flexible substrates. With adjustable bandgap, a-SiGe:H solar cells have shown very good red light response [27][28][29][30][31]. It is particularly useful when it is used in flexible a-Si/a-SiGe:H and a-Si/a-SiGe:H/a-SiGe:H multi-junction structure [32][33][34][35][36].…”