PhD in Electronic Engineering

The PhD project focuses on developing flexible organic-inorganic direct conversion X-ray detectors for advanced imaging applications. The current X-ray sensor devices feature an active layer composed of hole and electron-transporting organic semiconductors combined with high X-ray absorbing nanoparticles. These detectors are currently, primarily targeted for use in industry for non-destructive testing, with potential applications for medical imaging in the pipeline. However, there is a limited understanding on the positive correlation between signal response strength to X-rays, dark current, and response time constants for these detectors.

The project's goal is to assess the working principles and physics of these X-ray detectors to drive improvements and create a design framework for advanced X-ray sensor technology. Key objectives include developing and verifying models for device physics by evaluating charge generation, charge trap states, and their distribution, as well as other physical parameters including (but not limited to) morphology and crystallization.

The project aims to propose enhancements to device architecture or electronic operation and empirically verify the working principles through the fabrication and testing of R&D prototype devices. The ultimate goal is to increase the detectors' response time constants and signal strength to X-rays while independently reducing the dark current.

Additionally, the project will explore electronic driving schemes, environmental conditions, and pixel designs to improve advanced X-ray imaging detectors. These improvements will focus on enhancing response time, X-ray signal magnitude, and reducing dark current, thereby expanding the technology's application into new markets such as live imaging, X-ray CT, and medical fields.

Open to any UK or international candidates. Up to 30% of our UKRI funded studentships can be awarded to candidates paying international rate fees.

You will need to meet the minimum entry requirements for our PhD programme. UK applicants are expected to hold a first or upper second-class (2:1) UK degree in a relevant discipline (or equivalent overseas qualification), or a lower-second (2:2) UK degree plus a good UK masters degree - distinction normally required (or equivalent overseas qualification). International applicants are first class UK degree in a relevant discipline due to the limited nature of funding (for international students)