99.99%, reduced 13C nuclear-spin background, controlled 14N/15N doping, engineered active layers and bulk configurations for high-coherence NV research.">
Nova Crystal Technologies LimitedNOVA CRYSTALTECHNOLOGIES LIMITED
QD · Isotope Engineering

Isotope-Engineered
Diamond

¹²C-enriched diamond with strongly reduced ¹³C nuclear-spin background, combined with controlled ¹⁴N / ¹⁵N doping for high-coherence NV research and isotope-defined quantum structures.

¹²C > 99.99%¹⁴N / ¹⁵N controlled1–20 μm active layerBulk availableRa < 1 nm
12C-enriched diamond lattice showing strongly reduced 13C spin bath and controlled 14N or 15N isotope-defined NV center
Reduced ¹³C spin bath¹²C enrichment suppresses nuclear-spin background around the NV.
Controlled nitrogen isotope¹⁴N or ¹⁵N can be selected for isotope-defined NV structures.
Layer or bulkEngineered active layers and bulk isotope-enriched configurations.
High-coherence platformDesigned for coherence-sensitive spin experiments and quantum devices.
Why Isotope Engineering

Remove one of the dominant
spin-noise backgrounds.

Natural-abundance diamond contains ¹³C nuclear spins. Increasing the ¹²C fraction strongly reduces this nuclear-spin bath, giving the NV center a cleaner magnetic environment for coherence-sensitive measurements.

Natural abundance vs ¹²C-enriched diamond

The objective is not simply chemical purity. It is control over the spin environment surrounding the defect.

Comparison of natural diamond with stronger 13C nuclear spin noise and 12C enriched diamond with reduced spin noise
¹²C > 99.99%

Suppress the ¹³C bath

Lower nuclear-spin noise can support longer NV coherence and cleaner spin dynamics.

¹⁴N / ¹⁵N

Control the nitrogen isotope

Choose the implanted or doped nitrogen isotope around the experimental protocol and defect-identification strategy.

1–20 μm

Engineered active layer

A micrometer-scale isotope-enriched layer offers controlled composition with a substantially larger active volume than a shallow implanted layer.

0.3 / 1 / 4.5 ppm

Typical NV configurations

Representative ensemble densities balance coherence and signal according to the application.

Product Architectures

Control carbon isotope,
nitrogen isotope and active volume.

Nova can combine ¹²C enrichment with engineered nitrogen isotope and NV concentration in either a quantum-active layer or a bulk material configuration.

01 · BULK

¹²C-Enriched Bulk

Bulk isotope-enriched single-crystal diamond for experiments requiring a larger quantum-active volume.

uniform ¹²C enrichmentlow ¹³Coptional ¹⁴N / ¹⁵N
02 · ACTIVE LAYER

¹²C Epitaxial Layer

Typical 1–20 μm isotope-enriched CVD active layer on an electronic-grade diamond substrate.

thin active layerelectronic-grade substratecustom NV concentration
03 · ISOTOPE-DEFINED NV

¹⁴N / ¹⁵N Control

Controlled nitrogen isotope for engineered NV centers, custom layers and isotope-tagged defect structures.

¹⁴N¹⁵N¹⁴Nselect ¹⁴N, ¹⁵N, or a designed isotope profile
¹⁴N available¹⁵N availablesingle / mixed profile
Typical Specifications

Configure the spin environment.

Material design can be tuned across carbon isotope purity, nitrogen isotope, NV concentration, active-layer thickness, orientation and surface preparation.

Isotope engineeredCustomizable
Material
Single-crystal CVD diamond
Substrate
Electronic-grade diamond
¹²C isotopic purity
>99.99%
Natural-abundance reference
¹³C ≈ 1.1%
Nitrogen isotope
¹⁴N / ¹⁵N controlled by project
Typical active-layer thickness
1–20 μm
Typical NV concentration
0.3 / 1 / 4.5 ppm; custom available
Product configuration
Epitaxial active layer / bulk
Typical lateral size
2 × 2 mm to 4 × 4 mm typical; larger sizes available by project
Crystal orientation
{100} / {110} / {111} by project
Surface roughness
Ra < 1 nm*
Surface termination
Hydrogen / Oxygen available by project
Characterization
PL / NV density / T₂ / T₂* / T₁ by project
* Final dimensions, surface roughness and spin properties depend on configuration, orientation, defect density and measurement conditions and are confirmed per project.
Applications

For experiments where
coherence is part of the design.

Isotope-engineered diamond is useful when the nuclear-spin environment, NV density and active-volume geometry all need deliberate control.

01

High-Coherence Spin Studies

Reduced ¹³C spin bath for coherence-sensitive NV spin physics and pulse-sequence experiments.

02

Quantum Sensing

High-sensitivity magnetometry and other ensemble sensing where material noise and spin coherence matter.

03

Wide-Field Imaging

Engineered ¹²C active layers with controlled NV concentration for spatially resolved magnetic imaging.

04

Quantum Information

Isotope-controlled host material for spin registers, hybrid quantum systems and advanced defect research.

05

Microwave & Spin Resonance

Material platforms for ensemble resonance, maser-related research and spin-dynamics experiments.

Custom Engineering

Build the isotope profile
around the experiment.

Carbon isotope purity, nitrogen isotope, active-layer thickness, NV concentration, crystal orientation and surface chemistry can be combined in one material specification.

01Define isotope target¹²C enrichment and ¹⁴N / ¹⁵N selection.
02Select hostElectronic-grade substrate, orientation and size.
03Grow active region1–20 μm isotope-enriched layer or bulk configuration.
04Engineer NV densityTypical 0.3 / 1 / 4.5 ppm or custom target.
05Finish & verifyRa < 1 nm, H/O termination and requested spin characterization.

Need a custom isotope-engineered diamond?

Send the target ¹²C purity, nitrogen isotope, NV concentration, layer thickness, orientation and device requirements. We can translate them into a material specification.

Discuss Your Experiment →