(Keynote) Fundamental Origin of the Electroless Pb Monolayer Deposition and Its Implications for Electroless Atomic Layer Deposition

Abstract

In this talk, we point out a novel opportunity for catalyst monolayer and core-shell structures synthesis via surface limited redox replacement (SLRR) reaction. It is enabled by discovery of an electroless Pb monolayer deposition phenomenon whose fundamentals and practical aspects are presented. The particular benefit of this synthesis approach is for metal substrates which are not part of a broadly conductive supports such as metal nanoparticles imbedded in various oxides or zeolites. Examples of the catalyst monolayer deposition via SLRR of electrolesslly deposited Pb monolayer are presented under the auspices of a two-step electroless atomic layer deposition process (e-less ALD). Each cycle of the e-less ALD produces a precise submonolayer amount of catalyst deposit demonstrating its potential for a broad range of applications including synthesis of the oxide-supported catalyst core-shell structures or surface selective metallization in microelectronics. Figure 1