Abstract
Intense pulsed light sintering of Ag nanoparticle–nanowire films shows reduced peak temperatures and a self-limiting behavior controlled by NW content.
Highlights
Intense Pulsed Light Sintering (IPL) has garnered signi cant interest as a rapid and scalable process for sintering nanomaterials into functional lms and patterns
In IPL broad spectrum (400–700 nm), large-area (9 square inches or greater) pulsed light from a xenon lamp is absorbed and converted into heat by nanomaterials deposited onto a substrate, resulting in sintering of the nanomaterials (Fig. 1)
A variety of metallic (e.g. Cu,[1,2] Ag,3–5 Ni6) and semiconductor (e.g., CIGS,[7] CdTe,[8] CdS8) nanomaterials have been sintered within seconds using IPL
Summary
Recent work on IPL of spherical silver (Ag) nanoparticles (NPs) has shown a coupling between optical absorption and densi cation in the deposited NP ensemble.[5]. The absorption-induced thermal dissipation per unit lm volume reduces till it eventually no longer exceeds conductive and convective losses during an IPL pulse. This results in a turning point in temperature evolution. A er this turning point the maximum temperature per pulse reduces and levels off with little additional densi cation occurring, despite the fact that the input optical energy per pulse is unchanged.[9] this form of coupling between densi cation and optical absorption is self-damping in nature, i.e., densi cation of the lm a er a certain point inherently inhibits further densi cation by reducing additional optical absorption. Low processing temperatures, and low resistivity with low material costs is discussed
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