Journal
NANOTECHNOLOGY
Volume 27, Issue 38, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/27/38/385201
Keywords
silver nano particles; sintering; laser induced heating; organic electronics; metallization
Funding
- OCS (Office of the Chief Scientist) of Israel [55816]
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Fast sintering is of importance in additive metallization processes and especially on sensitive substrates. This work explores the mechanisms which set limits to the laser sintering rate of metal nano-particle inks. A comparison of sintering behavior of three different ink compositions with laser exposure times from micro-seconds to seconds reveals the dominant factor to be the organic content (OC) in the ink. With a low OC silver ink, of 2% only, sintering time falls below 100 ae s with resistivity < x4 bulk silver. Still shorter exposure times result in line delamination and deformation with a similar outcome when the OC is increased.
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