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Cited by 13 publications
(7 citation statements)
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References 39 publications
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“…From the results, we can also hypothesize that some LeTID defects already existed in silicon bulk just after the cofiring process. In literature, Lin et al [12] found that %25% light-induced degradation (LID) already existed in crystalline silicon after the firing and before the postfiring treatment, which supported our hypothesis. Subsequently, the first-step bias treatment is able to regenerate the preexisting LeTID defect and results in an enhancement of bulk lifetime of gallium-doped silicon.…”
Section: Introductionsupporting
confidence: 88%
“…Finally, this treatment should enable these cells in the complete regenerated state and therefore enhance the performance of these PERC solar cells, which is consistent with our experimental results in Figure 2. As the V oc of the cells is improved, it indicates that some LeTID defect might already exist after the cofiring process, and this phenomenon is also observed by Lin et al [12] . More information on LeTID can also be found in the review paper.…”
Section: Discussionsupporting
confidence: 72%
“…By using the method given by ref. [33] for judging whether the as-used illuminated annealing conditions can activate LeTID defects, we measured the IDLS (Injection-Dependent Lifetime Spectra) curves of five groups of lifetime samples made from same position of silicon wafers as five groups of PERC solar cells by using a WCT-120 equipment after sintering, dark annealing at 200 °C for 30 min, and regeneration at 100 °C and 1 sun for 24 h. It should be mentioned that the lifetime samples were prepared by the fabrication process of PERC solar cells without the steps of phosphorus diffusion, removing PSG, laser grooving on the back passivation layer, and screen printing front and back electrodes. In order to avoid the influence of Fe i + on the measurement results, all the samples were kept in the dark at room temperature for 3 h before each of the IDLS measurements to make most of Fe i + in the samples change into Fe-B pairs.…”
Section: Perc Solar Cellsmentioning
confidence: 99%
“…These degradations have shown to be more significant in the PERC technology. PERC technology improved the efficiency of the existing solar cells, enabling efficiency levels of 21-24% without a significant increase in price [87]. In PERC p-type multi-crystalline silicon cells, the effect of LID can cause a reduction in the power output of the module at the maximum power point (MPP) by around 10% [88,89].…”
Section: Light Induced Degradationmentioning
confidence: 99%
“…Since wafers grown by the VGF technique contain little oxygen and thus show little boron–oxygen (BO) related light‐induced degradation (BO‐LID), LeTID is typically the dominating degradation effect. The exact defect which is causing LeTID is still unknown, and there are different models to describe it 7‐10 . However, all cited models agreed that hydrogen plays some role in the defect formation.…”
Section: Introductionmentioning
confidence: 99%