Metallization of crystalline silicon solar cells for shingled photovoltaic module application

Oh, Wonje; Park, Jisu; Dimitrijev, Sima; Kim, Eung Kweon; Park, Yong Seob; Lee, Jaehyeong

doi:10.1016/j.solener.2019.11.095

Cited by 22 publications

(4 citation statements)

References 18 publications

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“…Modules were also fabricated using ptype multicrystalline Si solar cells with an Al back-surface field of 31 × 30 mm 2 . Shingling connections [28][29][30] of the three cells with a 1 mm overlap width were produced using conducting paste. Module bases were made of polycarbonate or polytetrafluoroethylene because preliminary experiments confirmed that a module base made of vinyl chloride was deformed at 85 °C during acceleration testing.…”

Section: Methodsmentioning

confidence: 99%

Encapsulation-free crystalline silicon photovoltaic modules and their hygrothermal and thermal-cycle tolerance

Imajo

Yamakawa

Takahashi

et al. 2023

Jpn. J. Appl. Phys.

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Novel concept of unencapsulated modules was developed for avoiding many degradation phenomena originating from encapsulants, for reducing material costs, and also for both easy repair of cells and easy recycle of modules. Reliability and durability of the novel concept modules were investigated using damp-heat (DH) test, thermal-cycle (TC) test, and sequential test composed of DH and TC tests. No large reduction in maximum power after DH test for 2700 h or TC test for 1000 cycles was observed for unencapsulated modules regardless of cell-connection methods, cell spacing, and existence of intentional microcracks. However, unstable contact between interconnector ribbons and busbar electrodes was found after TC test due to thermomechanical stress. Superiority of shingling connection was suggested for novel concept of unencapsulated modules.

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Section: Methodsmentioning

confidence: 99%

Encapsulation-free crystalline silicon photovoltaic modules and their hygrothermal and thermal-cycle tolerance

Imajo

Yamakawa

Takahashi

et al. 2023

Jpn. J. Appl. Phys.

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“…The SEM images are shown in Figure 11. It can be seen from Figure 11 that there were two types of silver nanoparticles on the surface of the silicon layer of the solar cell (Wonje et al, 2020). One was framed by the red circles, which were nano silver microcrystals grown after the reaction of glass with SiN x or silicon.…”

Section: Effect Of Glass Powder On Sintering Properties Of Silver Pastementioning

confidence: 99%

The effect of Te-based lead-free glass powder containing Ge and Ag+ on the contact formation and electrical performance of silicon solar cells

Yu,

Li,

Sun

et al. 2024

Front. Mater.

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The Te-based glass powder exhibits distinctive characteristics such as a low melting temperature and high chemical stability, rendering it a focal point of research in the realm of glass powder applications for solar cells. In this investigation, a pioneering Ge-containing Te-based lead-free glass powder was synthesized, and the influence of GeO2 content on critical parameters such as glass transition temperature (Tg), high-temperature fluidity, high-temperature wettability, acid and alkali resistance, as well as the network structure of the glass, was systematically explored. At an optimal GeO2 content of 8%, the glass powder displayed the lowest Tg (437°C), accompanied by a subdued crystallization reaction. The high-temperature fluidity and wettability exhibited favorable characteristics, indicating that the inclusion of GeO2 in the glass powder resulted in an enhanced interface contact. Building upon this foundation, techniques to augment the Ag+ content within the glass powder were investigated, along with the interaction between Ag+ and the SiNx anti-reflection layer or silicon on the surface of crystalline silicon solar cells. It was discerned that the Ag+ content in the glass powder significantly influences the deposition of silver microcrystals on the surface of crystalline silicon, thereby impacting the contact resistance of the solar cell. Then influences the series resistance and photoelectric conversion efficiency of the solar cell.

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“…Due to the omission of the soldering process, silver soldering tabs are no longer needed in shingled modules. In addition, it is possible to replace conventional busbars with localized Ag pads 90,91 or use busbar-less solar cells in a shingled module, 92,93 especially with SHJ solar cells, of which the conductivity of ITO layers on both sides could also contribute to the current transport between shingles. Therefore, the shingled configuration presents a unique opportunity to considerably reduce the silver consumption in busbars and soldering tabs regions.…”

Section: Prospects For Emerging Module Technologiesmentioning

confidence: 99%

Design considerations for multi-terawatt scale manufacturing of existing and future photovoltaic technologies: challenges and opportunities related to silver, indium and bismuth consumption

Zhang

Kim

Wang

et al. 2021

Energy Environ. Sci.

140

123

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Metallization of crystalline silicon solar cells for shingled photovoltaic module application

Cited by 22 publications

References 18 publications

Encapsulation-free crystalline silicon photovoltaic modules and their hygrothermal and thermal-cycle tolerance

Encapsulation-free crystalline silicon photovoltaic modules and their hygrothermal and thermal-cycle tolerance

The effect of Te-based lead-free glass powder containing Ge and Ag+ on the contact formation and electrical performance of silicon solar cells

Design considerations for multi-terawatt scale manufacturing of existing and future photovoltaic technologies: challenges and opportunities related to silver, indium and bismuth consumption

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