Gold (Au) Pellets, 99.999% (5N) Purity, Evaporation Grade (Request Current Price)

Gold (Au) Pellets, 99.999% (5N) Purity, Evaporation Grade

Nanostore’s Gold (Au) Pellets are high-purity evaporation source material for thermal and electron-beam (e-beam) physical vapor deposition (PVD) of gold thin films. Each pellet is manufactured from 99.999% (5N) purity gold feedstock and precision-cut to φ3 mm × 3 mm (1/8 inch diameter × 1/8 inch length), the industry-standard pellet geometry fits with most thermal boats, crucible liners, and e-beam pocket hearths. Sold by net weight (3 g per package; each package contains multiple pellets). Gold thin films deposited from these pellets exhibit high electrical conductivity, chemical inertness, oxidation resistance, and infrared reflectivity, making them used as contact electrodes, wire-bond pads, optical reflectors, and biocompatible surface coatings. Each lot ships with a Certificate of Analysis (COA) documenting purity verification by ICP-OES or GDMS.

MATERIAL SPECIFICATIONS:
Material: gold (Au)
CAS number: 7440-57-5
Purity: 99.999% (5N)
Pellet dimensions: φ3 mm × 3 mm (1/8 inch diameter × 1/8 inch length)
Package size: 3 g net weight (multiple pellets per package)
Appearance: metallic yellow pellets
Melting point: 1,064 °C (1,947 °F)
Density: 19.3 g/cm³
Evaporation temperature (approximate): 1,400 °C
Vapor pressure: 10⁻⁴ Torr at 1,132 °C
Deposition method: thermal evaporation, e-beam evaporation
Quality documentation: Certificate of Analysis (COA) included

COMMON APPLICATIONS: Thermal and e-beam evaporation of gold thin films for semiconductor metallization and wire-bond pad fabrication; deposition of electrodes and contact layers in MEMS, sensors, and microelectronic devices; optical coatings including infrared reflectors and mirrors; surface plasmon resonance (SPR) sensor substrates; biocompatible coatings for medical devices and biosensors; SEM sample preparation by gold sputter/evaporation coating; research-grade thin film studies in materials science, physics, and surface chemistry laboratories.

USAGE NOTES: Load one or more pellets into a clean tungsten boat, molybdenum boat, or e-beam crucible liner. For thermal evaporation, ramp source temperature gradually to avoid splashing; gold wets most refractory metal boats well. For e-beam evaporation, use a graphite or ceramic crucible liner to prevent alloying with the copper hearth. Recommended base pressure before deposition: ≤5 × 10⁻⁶ Torr. Store pellets in the original sealed container in a clean, dry environment. Gold is chemically inert and non-hygroscopic; no special atmosphere storage is required. Pricing is subject to precious metal market fluctuations; contact Nanostore for current pricing and lead time.