Low-high junction theory applied to solar cells

Novel Atmospheric Growth Technique to Improve Both Light Absorption and Charge Collection in ZnO/Cu2O Thin Film Solar Cells

“…Other photovoltaic systems have utilized a back‐surface‐field (BSF) design where subsequent layers (moving away from the p‐n junction) are highly‐doped to create a graded structure 24–28. BSF cells have yielded higher V OC 27, 28 by reducing the recombination velocity of minority carriers and by drawing the carriers towards opposite electrodes. To our knowledge, there is only one reported theoretical study of using such a n/p/p + structure with a Cu 2 O system and no experimental results have been reported thus far 29.…”

Hole-conductor-free perovskite organic lead iodide heterojunction thin-film solar cells: High efficiency and junction property

“…A maximum value still appears at 500 nm, then the IQE drops gradually, suggesting that the carrier collection ability in the deeper region of the CH 3 NH 3 PbI 3 layer is not as strong as that in the shallow region due to carrier recombination in the neutral region. 9,22 Figure 4(c) gives the plots of J SC vs. incident light intensity to illuminate the carrier transport properties of the cell. It is obvious that there is a linear relationship between J SC and light intensity, which means that carriers can transport smoothly in the semiconductors and there is no obvious difference in the transport velocity between electrons and holes.…”

Simplified process for high efficiency, self-aligned IBC c-Si solar cells combining ion implantation and epitaxial growth: Design and fabrication

“…where S SD is the Shockley-Read-Hall (SRH) recombination through surface defects as earlier described in (iii) while S 0 (N D ) is the doping-dependent SRH recombination [62]. The impact of S SD on S eff in case of NO-FSF, FSF 1 and FSF 2 was evaluated by using the software EDNA [63].…”