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:

Device Modelling & Simulation:

• 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

Parameter Extraction & Model Calibration:

• 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.

Apply today and join a team that’s redefining the solar industry!

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

Please send your application including Cover Letter, CV and References to: 

hr-techgroup@qcells.eu  

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Hanwha Q CELLS GmbH
OT Thalheim
Sonnenallee 17 - 21
06766 Bitterfeld-Wolfen
Deutschland

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Schlüsselwörter: MINT / STEM, Solar, Photovoltaik, Forschung, Entwicklung, F&E / R&D, Physik, Chemie, Ingenieur, Wissenschaftler, Chemiker, Physiker, Labor, MSA, ISO9001, ISO17025, ISO45001, TRGS 526