HQP - QS 208 Photovoltaics Perovskite- Silicon Tandem Solar Cells Simulation & Modelling Exper[...]

Powering the Future of Solar Technology with Qcells

At Qcells, we don’t just envision a greener future—we actively create it.

As a global leader in photovoltaic technology and a proud member of the Hanwha Group, a FORTUNE® Global 500 enterprise, we are dedicated to shaping the next generation of solar energy. Our Center for Innovation, Technology and Quality in Thalheim (near Leipzig/Halle/Berlin) is home to over 200 experts driving advancements in solar cells and modules, “Engineered in Germany.”

We are currently looking for a highly motivated Simulation & Modelling Expert to strengthen our R&D team in the field of perovskite-silicon tandem solar cells. If you are passionate about theoretical work, device physics, and predictive modelling, we would love to hear from you.

Your Role: Driving Theoretical Understanding & Predictive Modelling

As a key member of our international R&D team, you will play a central role in building a deep physical understanding of perovskite-silicon tandem solar cells and translating it into predictive simulation models that guide experimental and technological development.

Your Key Responsibilities:

• Develop and apply physical models of perovskite-silicon tandem solar cells
• Perform simulations using Setfos and comparable tools
• Analyse the impact of material properties, interfaces (including perovskite-based layers), and device architectures on performance

Physics-Based Understanding:

• Build a deep understanding of charge transport, recombination mechanisms, and interface physics
• Investigate complex phenomena such as ionic migration and electrochemical effects in perovskite materials
• Translate theoretical insights into actionable guidelines for device and process optimization
• Derive and refine model parameters based on experimental data
• Correlate simulation results with real device performance and characterization data
• Continuously improve model accuracy and predictive capability

Data-Driven & Cross-Functional Collaboration:

• Work closely with experimental, integration, and characterization teams
• Support interpretation of measurement results through simulation
• Contribute to a holistic understanding of device behaviour across all development stages

Technology Development & Innovation:

• Drive innovation through simulation-guided design of next-generation perovskite-silicon tandem architectures
• Identify performance limits and new concepts for efficiency and stability improvements
• Contribute to technology roadmaps and long-term research strategies

Your Profile: Expertise Meets Physical Insight

We are looking for a scientifically rigorous and curious individual with a strong foundation in semiconductor physics and device modelling.

Your Qualifications:

• Degree in physics, materials science, electrical engineering, or a related field (PhD preferred)
• Strong background in semiconductor device physics and solar cell operation principles
• Hands-on experience with Setfos (mandatory) or similar simulation tools
• Experience in numerical modelling and simulation of optoelectronic devices
• Ability to link theoretical models with experimental data

Highly desirable (not mandatory):

• Experience with perovskite solar cells or perovskite-silicon tandem technologies
• Understanding of ionic effects and degradation mechanisms in perovskite materials
• Strong analytical and problem-solving skills
• Excellent communication skills and ability to work in interdisciplinary teams
• Very good written and spoken English (German is a plus)
• Willingness to collaborate in an international environment

Why Qcells?

• Work on cutting-edge perovskite-silicon tandem solar cell technologies
• Be part of a highly innovative and interdisciplinary R&D environment
• Access to state-of-the-art experimental and simulation infrastructure
• Attractive compensation and development opportunities
• Contribute to a sustainable energy future

Ready to Shape the Future of Solar Energy?

Take this opportunity to advance the theoretical understanding and performance of next-generation solar cells. If you are passionate about modelling complex physical systems and driving innovation through simulation, we want to hear from you.

Qcells is an equal-opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.

Privacy Notice pursuant to Article 13 of the GDPR for job vacancies

As part of your application, we process your personal data (e.g. contact details, CV, references) solely for the purpose of conducting the recruitment process. The data controller is

Germany

The legal basis is Article 6(1)(b) of the GDPR. Your data will be treated confidentially and deleted no later than six months after the process has been completed, provided there is no statutory obligation to retain it. You have the right to access, rectify, erase and restrict the processing of your data, as well as the right to lodge a complaint with a data protection supervisory authority. If you have any questions, please contact