Mobility and coalescence of nuclei in metal vapour deposition on alkali halide substrates

Zhang

ACS Appl. Mater. Interfaces

et al. 2021

An in situ microbalance and infrared spectroscopic study of alternating exposures to Me2Au(S2CNEt2) and ozone illuminates the organometallic chemistry that allows for the thermal atomic layer deposition (ALD) of gold. In situ quartz crystal microbalance (QCM) studies resolve the nucleation delay and island growth of Au on a freshly prepared aluminum oxide surface with single cycle resolution, revealing inhibition for 40 cycles prior to slow nucleation and film coalescence that extends over 300 cycles. In situ infrared spectroscopy informed by first-principles computation provides insight into the surface chemistry of the self-limiting half-reactions, which are consistent with an oxidized Au surface mechanism. X-ray diffraction of ALD-grown gold on silicon, silica, sapphire, and mica reveals consistent out-of-plane oriented crystalline film growth as well as epitaxially directed in-plane orientation on closely lattice-matched mica at a relatively low growth temperature of 180 °C. A more complete understanding of ALD gold nucleation, surface chemistry, and epitaxy will inform the next generation of low-temperature, nanoscale, textured depositions that are applicable to high surface area supports.

Section: Resultssupporting

confidence: 58%

Thermal Atomic Layer Deposition of Gold: Mechanistic Insights, Nucleation, and Epitaxy

Zhang

ACS Appl. Mater. Interfaces

et al. 2021

“…The films were composed of minute i-Ag in as-deposited films. [31][32][33] i-Ag showed greater aggregation after baking. The diameters of i-Ag after baking were 20-60 nm.…”

Section: Resultsmentioning

confidence: 97%

Localized surface plasmon resonance effect in organic light-emitting devices with Ag islands

Shimazaki

Naka

Okada

2014

Jpn. J. Appl. Phys.

We report on luminescence enhancement of organic light-emitting devices (OLEDs) with silver islands (i-Ag) by a localized surface plasmon resonance (LSPR) effect. The devices were fabricated using tetraphenylporphyrin (TPP) as the red emission material, bis[N-(1-naphthyl)-N-phenyl] benzidine (α-NPD) as the blue emission and hole transport material, and 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP) as the electron transport material. To clarify the position of emission enhancement by energy transfer from i-Ag, an ultrathin TPP layer located within the α-NPD layer. In the device with i-Ag and the TPP layer located over 10 nm from i-Ag, TPP emission was enhanced in comparison with the device without i-Ag. The enhancement of TPP emission was suggested to be the effect of the enhanced electric field resulting from LSPR excited by α-NPD emission.

Journal of Vacuum Science &Amp; Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena

“…[3][4][5] In other words, the plateau island might consist of the folded chain structure, but its number density of an order of 10 7 cm Ϫ2 for the islands in PVDF film surprised us since it is in the order of 10 12 -10 14 cm Ϫ2 for metals 6 and semiconductors. [3][4][5] In other words, the plateau island might consist of the folded chain structure, but its number density of an order of 10 7 cm Ϫ2 for the islands in PVDF film surprised us since it is in the order of 10 12 -10 14 cm Ϫ2 for metals 6 and semiconductors.…”

Section: Discussionmentioning

confidence: 99%

Atomic force microscopic observation at initial growth stage of vacuum-deposited thin film of polyvinylidenefluoride

Seyama¹

1997

Articles you may be interested inVacuum thermal evaporation of polyaniline doped with camphor sulfonic acid An (ultra) high-vacuum compatible sputter source for oxide thin film growth Rev. Sci. Instrum. 84, 094103 (2013); 10.1063/1.4821148 Thin films of polymer blends for controlled drug delivery deposited by matrix-assisted pulsed laser evaporation Appl. Phys. Lett. 96, 243702 (2010); 10.1063/1.3453756 Structure and surface morphology of vapor deposited polycarbonate thin films J. Appl. Phys.