کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1665178 | 1518042 | 2014 | 7 صفحه PDF | دانلود رایگان |

• Ultrafine Sn nanoparticles were synthesized by a modified polyol process.
• The formation of an oxide–organic complex layer on the Sn nanoparticles was confirmed.
• The Sn nanoparticles exhibited an extremely low melting point of 128 °C.
• The Ag/Sn composite ink containing the synthesized Sn nanoparticles was sintered.
• The composite showed excellent sheet resistance even under mild sintering conditions.
Ultrafine Sn nanoparticles (NPs) (diameter < 10 nm) exhibiting a remarkable depression in their melting point were synthesized at room temperature by a modified polyol process. For the synthesis, low-grade Sn(II) 2-ethylhexanoate and sodium borohydride were used as the precursor and reducing agent in a diethylene glycol medium. Further, polyvinyl pyrrolidone was used as a capping agent during the synthesis. The synthesized crystalline Sn NPs showed an average diameter of 7.98 nm and an extremely low melting point of 128 °C. To test the applicability of the synthesized ultrafine Sn NPs to practical systems, an Ag-based composite ink containing the Sn NPs was prepared. The ink was easily sintered through local liquid-phase sintering by melting of the ultrafine Sn NPs added as a metal binder. Therefore, despite the low-temperature (170 °C) sintering with a short duration (~ 15 min), the composite ink exhibited excellent sheet resistance.
Journal: Thin Solid Films - Volume 562, 1 July 2014, Pages 211–217