Passive microfeature backplates for resilient perovskite silicon tandem PV modules

About the Project

Perovskite silicon tandem solar cells have shown remarkable efficiency improvements but continue to face challenges in thermal stability, mechanical integrity, and moisture protection. This PhD project will explore a new concept of passive microfeatured backplates designed to enhance module durability and performance through improved heat distribution and barrier properties. The work will investigate how subtle microstructural modifications and materials choices can extend lifetime and maintain power output under real outdoor conditions.

Objectives

1. Develop and assess backplate designs that balance heat spreading, moisture control, and stiffness for tandem modules.
2. Model coupled thermal and mechanical behaviour to understand stress and strain evolution in multilayer module stacks.
3. Fabricate and evaluate small scale demonstrators using accessible, scalable manufacturing techniques.
4. Validate reliability and performance through controlled laboratory and field relevant testing.

Methodology

• Simulation: Conduct multiphysics modelling to describe heat flow, moisture transport, and mechanical stress within the module. Parametric studies will identify how geometry and materials affect reliability.
• Materials and fabrication: Evaluate candidate backplate materials such as light alloys, coated metals, and composites. Introduce controlled surface features using standard forming, embossing, or additive manufacturing techniques.
• Assembly and testing: Produce simplified module samples for thermal and environmental tests. Examine interfacial bonding and dimensional stability under simulated ageing cycles.
• Characterisation: Use optical and thermal imaging, electrical characterisation, and mechanical analysis to track degradation. Results will inform design guidelines for the next generation of backplates.

Novelty and impact

This project introduces a passive engineering approach to improving perovskite silicon module reliability through geometric and materials optimisation rather than active cooling or encapsulation complexity. The concept aligns with scalable manufacturing and could benefit both tandem and single junction PV technologies. The expected outcomes include improved durability, simplified integration, and reduced long term cost of energy generation.

Training and environment

The successful candidate will develop skills in computational analysis, prototype fabrication, and photovoltaic reliability testing. Training will include modelling (for example COMSOL or ANSYS), materials processing, and analytical methods for evaluating PV components. The project will provide opportunities for collaboration with industrial and academic partners working on photovoltaics, materials science, and clean energy manufacturing. Dissemination through international conferences and journals will be supported.

Candidate profile

Applicants should hold at least an upper-second degree in mechanical engineering, materials science, physics, or electrical engineering. Experience in CAD, simulation, or experimental testing will be advantageous. An interest in renewable energy, problem solving, and interdisciplinary research is essential.

Expected outcomes

The project will deliver (i) validated design concepts for passive backplates, (ii) an improved understanding of thermal mechanical coupling in tandem modules, and (iii) transferable guidelines for reliable module design.

Keywords: perovskite silicon tandem, photovoltaic modules, microstructures, thermal management, reliability, modelling.