Performance Improvement of Hydrogenated Nanocrystalline Silicon Solar Cells by Hydrogen Dilution Profiling

Large area nanocrystalline silicon based multi-junction solar cells with superior light soaking stability

“…The fc values are also listed in Table II, where it can be seen that cells with higher Voc also have lower fc in the intrinsic layer. This result is consistent with earlier reports [8]. Figure 1 shows the hydrogen effusion spectra.…”

Over 15% Efficient Hydrogenated Amorphous Silicon Based Triple-Junction Solar Cells Incorporating Nanocrystalline Silicon

“…First, a proper hydrogen dilution profiling was used to control the evolution of nanocrystallites along the growth direction. We found that the hydrogen dilution profiling improves not only the nc-Si:H cell performance [7,8], but also the stability [9]. Second, the nc-Si:H intrinsic layer was deposited in a high pressure and high power regime [10,11].…”

“…The 5.5% lightinduced degradation is mainly due to a reduction in the Jsc. QE reveals a reduction in the short wavelength region, which does not affect its performance in a multi-junction structure [9]. We have also developed nc-Si:H singlejunction cells with high long wavelength response for the bottom cell in triple-junction structures.…”

Amorphous and Nanocrystalline Silicon Solar Cells and Modules

“…Table 7 lists the J-V characteristics of the nc-Si:H solar cells made with various hydrogen dilution profiles. Yue et al (2006) showed that the slightly inversed nanocrystalline evolution was beneficial for nc-Si:H solar cell performance. However, the two cells with 20% longer intrinsic layer deposition time show a lower J sc , mainly due to the reduction in the long wavelength response, as shown in Figure 25.…”