Tetradecahedral Cu@Ag core–shell powder with high solid-state dewetting and oxidation resistance for low-temperature conductive paste

文献情報

出版日 2023-12-13

DOI 10.1039/D3TA06483B

インパクトファクター 12.732

著者

Yulian Zeng, Zhenzhen Chen, Zheng Lu, Mengfei Ni, Chen-Wei Peng, Zipeng Wang, Hua Sun, Xiaodong Su

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要旨

The high cost of metallization using low-temperature cured Ag paste is one of the factors limiting the industrial deployment of silicon heterojunction (SHJ) solar cells, which can be mitigated by developing Ag-coated Cu (Cu@Ag) core–shell powders to replace Ag powders. Yet, a large number of grain boundaries in the Ag shell induce solid-state dewetting of the Ag shell and provide oxygen channels to the Cu core, thus adversely affecting the long-term stability and efficient operation of SHJ modules. Here, a novel tetradecahedral Cu@Ag core–shell powder with large Ag shell grains, meaning low grain boundary density, was fabricated by electroless plating, and the formation mechanism of Ag shells with large grains and smooth surfaces was revealed. The tetradecahedral Cu@Ag powder resists dewetting even after heat treatment at 250 °C for 30 min in air and survives oxidization at room temperature for at least 3 months in air, showing better dewetting and oxidation resistance. Experiments and simulations show that the electrode prepared with tetradecahedral Cu@Ag powder has higher electrical conductivity than that prepared with conventional spherical Cu@Ag powder. This study represents a promising strategy for improving the reliability and conductivity of Cu@Ag powder used for the metallization of SHJ solar cells.

掲載誌

Journal of Materials Chemistry A

CiteScore: 19.5

自己引用率: 4.7%

年間論文数: 2211

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment

Tetradecahedral Cu@Ag core–shell powder with high solid-state dewetting and oxidation resistance for low-temperature conductive paste

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Journal of Materials Chemistry A

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