6–10 Jul 2026
University of the Western Cape
Africa/Johannesburg timezone
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Neutron Transmutation Doping (NTD) Process Optimization.

7 Jul 2026, 17:20
1h 20m
Great Hall (University of the Western Cape)

Great Hall

University of the Western Cape

Poster Presentation Track B - Nuclear, Particle and Radiation Physics Poster Session 1

Speaker

Tshepiso Thompson Rauwane (student)

Description

Neutron Transmutation Doping (NTD)

This area explores the technique of using nuclear reactors to modify the electrical properties of semiconductor materials, particularly silicon, for high-performance electronic components. The project aims to optimize the neutron transmutation doping process at the Nuclear Energy Corporation of South Africa (NECSA) SAFARI-1 research reactor, focusing on the resistivity of the semiconductor material to produce the desired electrical characteristics in its fabrication.

NTD is the preferred method over chemical means for introducing dopants in semiconductors, especially if the application is for the manufacturing of small, discrete, low-power devices, etc. This will help with detailed plans for the irradiation process, including sample placement, neutron fluence requirements, and heat management. Conducting studies on the final electrical resistivity of the doped material and how it correlates with irradiation parameters is of importance.

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