Industrial Cleaning Sequences for Al2O3-passivated PERC Solar Cells

Kranz, Christopher; Wyczanowski, Sabrina; Baumann, Ulrike; Dorn, Silke; Queißer, S.; Schweckendiek, Jürgen; Pysch, D.; Dullweber, Thorsten

doi:10.1016/j.egypro.2014.08.121

Cited by 9 publications

(2 citation statements)

References 3 publications

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“…The dark J-V measurements and as derived apparent ideality factor of reference and PERC solar cells are shown in figures 2(a) and (b), respectively. Interface passivation in PERC solar cells leads to an overall lower recombination current in the probed bias range, implying that passivation has an overall impact on the device performance [17]. Moreover, the net effect of passivation on recombination can be quantified in terms of ideality factor of device.…”

Section: Resultsmentioning

confidence: 99%

Electro-analytical comparison of commercial mono-crystalline silicon and PERC solar cells to maximize performance

et al. 2020

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In this article detailed electro-analytical comparison of the commercial mono-crystalline silicon and passivated emitter and rear contact (PERC) solar cells has been presented that can help in device optimization during manufacturing process. This study indicates fundamental differences between these two technologies in terms of the series resistance, shunt resistance and junction quality including ideality factor and doping concentration. Impedance spectroscopic analysis revealed a value of series resistance of 1 Ω for both the devices with no substantial difference, which suggest that employed metal contacts and base layer conductivity in both the solar cells have comparable electrical characteristics. The shunt resistance of 190 Ω cm2 and 98 Ω cm2 have been obtained for PERC and reference solar cells. The ideality factors of 1.9 and 2.2 have been obtained for PERC and reference solar cells, which indicate a better junction quality in PERC solar cells. From Mott-Schottky analysis a value of 0.65 V built-in potential has been obtained for both the solar cells. A doping density of 2.31 × 1016 cm−3 and 4.494 × 1016 cm−3 has been obtained for reference and PERC solar cells. This study intends to provide a basis for development of better optimization strategies to improve the performance of solar cells.

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Section: Resultsmentioning

confidence: 99%

Electro-analytical comparison of commercial mono-crystalline silicon and PERC solar cells to maximize performance

et al. 2020

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“…Chemical passivation was achieved by employing a DHF dip at the end of the process, resulting in a hydrogen-terminated interface. Kranz et al [48] reported that the HF/O 3 cleaning method could produce a hydrophobic surface that was similar to the RCA method. Li et al [49] reported that the use of room temperature O 3 /HF/HCl for 10 min achieved a higher passivation quality than the RCA procedure, with an effective carrier lifetime (τ eff ) of 5.8 ms. A τ eff of 7.3 ms was obtained on a structure that was passivated using a 20 nm thick intrinsic layer on both sides (a-Si:H(i)/c-Si(n)/a-Si:H(i)), indicating an implied open-circuit voltage (i-V OC ) of 740 mV at 1 sun illumination [40].…”

Section: Ozone−based Cleaningmentioning

confidence: 99%

Surface Cleaning and Passivation Technologies for the Fabrication of High-Efficiency Silicon Heterojunction Solar Cells

Shi

Guan

et al. 2023

Materials

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Silicon heterojunction (SHJ) solar cells are increasingly attracting attention due to their low-temperature processing, lean steps, significant temperature coefficient, and their high bifacial capability. The high efficiency and thin wafer nature of SHJ solar cells make them ideal for use as high-efficiency solar cells. However, the complicated nature of the passivation layer and prior cleaning render a well-passivated surface difficult to achieve. In this study, developments and the classification of surface defect removal and passivation technologies are explored. Further, surface cleaning and passivation technologies of high-efficiency SHJ solar cells within the last five years are reviewed and summarized.

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Analytical Techniques for Wet Processing

Wahl

Meyer

2021

Photovoltaic Manufacturing

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Industrial Cleaning Sequences for Al2O3-passivated PERC Solar Cells

Cited by 9 publications

References 3 publications

Electro-analytical comparison of commercial mono-crystalline silicon and PERC solar cells to maximize performance

Electro-analytical comparison of commercial mono-crystalline silicon and PERC solar cells to maximize performance

Surface Cleaning and Passivation Technologies for the Fabrication of High-Efficiency Silicon Heterojunction Solar Cells

Analytical Techniques for Wet Processing

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