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Niobium Nitride Evaporation Materials

VD0753 Niobium Nitride Evaporation Materials, NbN

Catalog No.VD0753
MaterialNiobium Nitride (NbN)
Purity99.5%
ShapePowder/ Granule/ Custom-made

TFM stands out as a top producer and provider of ultra-pure Niobium Nitride for evaporation applications, alongside an extensive range of other evaporation materials. Our products are available in both powder and granule formats, and we can also tailor solutions to meet specific customer requirements.

MSDS File

Introduction

Niobium Nitride Evaporation Materials (NbN) are high-performance refractory compound sources designed for thin film deposition in superconducting devices, diffusion barrier layers, and wear-resistant coatings. NbN is well known for its superconducting properties, high hardness, and chemical stability, making it a key material in quantum electronics, microelectronics, and advanced protective coatings.

Optimized for physical vapor deposition (PVD) processes such as electron beam evaporation and reactive evaporation, NbN evaporation materials enable the fabrication of uniform, high-quality nitride thin films.

Detailed Description

Niobium Nitride (NbN) is a refractory transition metal nitride with a cubic crystal structure (δ-NbN phase commonly used in superconducting applications). It exhibits:

  • Superconducting transition temperature (Tc) typically around 15–17 K (phase dependent)

  • High hardness and mechanical durability

  • Good chemical stability

  • Excellent diffusion barrier performance

NbN Evaporation Materials are manufactured using controlled nitridation and sintering processes to ensure high density and phase uniformity. Because nitrides can exhibit high melting points and strong bonding characteristics, material processing emphasizes:

  • High bulk density (≥95% theoretical density)

  • Controlled stoichiometry

  • Uniform microstructure

  • Stable evaporation behavior under high vacuum

Available forms include:

  • Sintered ceramic pellets

  • Granules or broken pieces

  • Custom-sized feedstock for specific crucibles

For some applications, reactive evaporation using niobium metal in nitrogen atmosphere may also be employed; however, pre-compounded NbN materials provide improved stoichiometric control in certain deposition systems.

Applications

Niobium Nitride (NbN) Evaporation Materials are widely used in:

  • Superconducting nanowire single-photon detectors (SNSPDs)

  • Josephson junction devices

  • Quantum computing components

  • Diffusion barrier layers in semiconductor devices

  • Hard protective coatings

  • Microwave and RF superconducting circuits

  • MEMS and microelectronic structures

  • Wear-resistant thin films

In superconducting electronics, NbN thin films are valued for their fast response time and stable superconducting performance.

Technical Parameters

ParameterTypical Value / RangeImportance
Chemical FormulaNbNDefines nitride phase
Purity99.9% – 99.99%Reduces contamination
Density≥ 95% theoretical densityStable evaporation & film uniformity
FormPellets / Pieces / GranulesCompatible with evaporation systems
Melting Point> 2500°C (compound dependent)High-temperature stability
Deposition MethodElectron Beam / Reactive EvaporationFlexible processing

Comparison with Related Materials

MaterialKey AdvantageTypical Application
NbNSuperconducting + hard nitride propertiesQuantum & barrier films
TiNHigh hardness & golden color coatingDecorative & barrier coatings
TaNExcellent diffusion barrierSemiconductor devices
Nb (metal)Reactive nitride formation capabilityReactive PVD processes

Compared with TiN, NbN offers superconducting functionality. Compared with TaN, NbN is particularly suited for superconducting and quantum device applications.

FAQ

QuestionAnswer
Is NbN suitable for superconducting thin films?Yes, NbN is widely used in superconducting electronics and quantum detection devices.
Can stoichiometry be customized?Yes, composition adjustments can be discussed for specific deposition needs.
Is electron beam evaporation recommended?Yes, e-beam evaporation is commonly used for refractory nitride materials.
Are small research quantities available?Yes, flexible quantities are available for R&D applications.
How is the material packaged?Vacuum-sealed, moisture-protected packaging ensures safe transport and storage.

Packaging

Our Niobium Nitride Evaporation Materials (NbN) are meticulously tagged and labeled externally to ensure efficient identification and maintain high standards of quality control. Each batch is carefully protected to prevent contamination and mechanical damage during storage and transportation.

Conclusion

Niobium Nitride (NbN) Evaporation Materials provide a robust and high-performance source for superconducting devices, semiconductor barrier layers, and hard nitride coatings. With controlled stoichiometry, high purity, and compatibility with advanced PVD processes, NbN supports both cutting-edge quantum research and industrial thin film production.

For detailed specifications and a quotation, please contact us at sales@thinfilmmaterials.com.

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FAQ

  • They are high‐purity substances (e.g. metals, alloys, or compounds) used in thermal or electron‐beam evaporation processes to form thin films on substrates.

  • Typically, they’re processed into a form (often ingots, pellets, or wires) that can be efficiently vaporized. Preparation emphasizes high purity and controlled composition to ensure film quality.

  • Thermal evaporation and electron-beam (e-beam) evaporation are the two main techniques, where material is heated (or bombarded with electrons) until it vaporizes and then condenses on the substrate.

  • Thermal evaporation heats the material directly (often using a resistive heater), while e-beam evaporation uses a focused electron beam to locally heat and vaporize the source material—each method offering different control and energy efficiency.

  • Key parameters include source temperature, vacuum level, deposition rate, substrate temperature, and the distance between the source and the substrate. These factors influence film uniformity, adhesion, and microstructure.

  • Evaporation generally produces high-purity films with excellent control over thickness, and it is especially suitable for materials with relatively low melting points or high vapor pressures.

  • Challenges include issues with step coverage (due to line-of-sight deposition), shadowing effects on complex topographies, and possible re-evaporation of material from the substrate if temperature isn’t properly controlled.

  • Common evaporation materials include noble metals (e.g., gold, silver), semiconductors (e.g., silicon, germanium), metal oxides, and organic compounds—each chosen for its specific optical, electrical, or mechanical properties.

  • Selection depends on desired film properties (conductivity, optical transparency, adhesion), compatibility with the evaporation process, and the final device application (semiconductor, optical coating, etc.).

  • Optimizing substrate temperature, deposition rate, and chamber vacuum are critical for ensuring that the film adheres well and forms the intended microstructure without defects.

  • Troubleshooting may involve checking the source material’s purity, ensuring stable source temperature, verifying the vacuum level, adjusting the substrate’s position or temperature, and monitoring deposition rate fluctuations.

While evaporation tends to yield very high purity films with excellent thickness control, it is limited by its line-of-sight nature. In contrast, sputtering can deposit films more uniformly on complex surfaces and is more versatile for a broader range of materials.

 

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