Boron Doped Diamond for Semiconductor

Boron Doped Diamond for Semiconductor: From Insulator to p-Type Conductive Crystal

Our Boron Doped Diamond for Semiconductor is a p-type single crystal diamond material that combines diamond’s exceptional physical and chemical properties with precisely controlled electrical conductivity. Pure diamond is an insulator. But when boron atoms are introduced into the crystal lattice, it transforms into a p-type semiconductor with high stability, high breakdown field strength, and high hole mobility.

As an ultra-wide bandgap semiconductor, diamond is recognized as the ultimate power semiconductor material. It has the potential to fundamentally transform power electronics and RF electronics. Our boron-doped single crystal diamond is particularly suitable for high-temperature, high-power semiconductor components, as well as electrochemical applications.

Precise Doping Control for Different Applications

We offer boron-doped diamond across a wide concentration range, from low doping to high doping, with tight process control.

• Low-concentration boron-doped diamond delivers high hole mobility, making it ideal as the active material for semiconductor devices such as Schottky diodes and field-effect transistors

• High-concentration boron-doped diamond offers very low resistivity, making it suitable for ohmic contact electrodes

This flexibility allows us to provide tailored solutions for different application requirements.

Radiation Detectors

Diamond’s wide bandgap gives it exceptional radiation resistance. Compared to traditional silicon detectors, diamond detectors are not easily damaged by radiation and offer extremely fast carrier drift speed. Our boron-doped diamond is well-suited for extreme environments where reliability is critical: deep space detectors, nuclear fusion reactor monitoring, and aerospace radiation monitoring. The material’s ability to withstand extreme conditions combined with fast response time makes it ideal for high-energy physics experiments.

Power Switching Devices

The core advantage in power switching applications lies in the high breakdown field strength of p-type diamond. This enables switching devices with extremely high voltage tolerance. In demanding power applications such as high-power DC conversion, ultra-high voltage transmission, and aerospace power systems, using p-type diamond to fabricate Schottky diodes or field-effect transistors delivers high voltage tolerance, efficient power conversion, and very low power consumption – all contributing to improved device performance and stability.

Diamond Probes for Scanning Probe Microscopy

Our boron-doped diamond is also used in diamond probes for scanning probe microscopy (SPM). In SPM operation, the probe tip interacts with the sample surface at the nanoscale. For scanning tunneling microscopy (STM), the probe relies on quantum tunneling to measure current. For conductive atomic force microscopy (C-AFM), it measures local conductivity in contact mode. Boron-doped diamond probes offer exceptional mechanical stability, high wear resistance, and stable electrical performance. They maintain performance under demanding scanning conditions – such as high current density and prolonged contact – significantly outperforming traditional metal probes (like platinum) or metal-coated probes.

Electrochemical Applications

In the field of electrochemistry, our boron-doped diamond offers unique advantages for high-sensitivity biosensors and medical detection.

Key benefits include:

• Microelectrode characteristics: Diamond microelectrodes have extremely small volume, with mass transport layer thickness comparable to electrode dimensions. They establish steady-state diffusion layers in microseconds without complex depolarization processing

• High sensitivity: Enables detection of trace analytes

• High-resistance environment adaptability: Diamond electrodes maintain excellent electrochemical response even in high-resistance ultrapure water

These properties make our boron-doped diamond ideal for in vivo and in vitro detection of neurotransmitters (such as dopamine), glucose monitoring, and uric acid and vitamin C detection. Applications serve medical device manufacturers, biotechnology companies, and neuroscience research institutions.

From Lab to Production

Diamond semiconductors are no longer just a research curiosity. Our Boron Doped Diamond for Semiconductor materials are available in production quantities, supporting the transition from laboratory exploration to commercial device fabrication. Whether for power electronics, radiation detection, scanning probe microscopy, or electrochemical sensing, our precisely doped diamond materials offer the performance and reliability that next-generation applications demand.