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Perovskite Solar Cell Research Data Digitalization

Gkogkou, Dimitra; Götte, Michael; Nandayapa, Edgar; Graniero, Paolo; Razeghi, Yousef; Unger, Eva

Abstract

This poster was presented in the DSgG 2025 in Karlsruhe and summarizes how the data steward team of Helmholtz-Zentrum Berlin worked side by side with scientists from the solar cell research to build a lab data infrastructure serving the day-to-day research needs while following FAIR principles. Abstract: While FAIR data is essential for the long-term sustainability of science, researchers need practical incentives to engage with data stewardship. At HZB, the data steward team has collaborated closely with solar cell research groups to implement efficient and comprehensive data management workflows. This initiative is built on a strong partnership between data stewards and scientists, aiming to transform research outputs into FAIR-compliant datasets while providing field-specific analytical tools to support the exploration, visualization, and analysis of both individual and group-level data. A key element of this effort is the collaboration with FAIRmat, a consortium within the German National Research Data Infrastructure (NFDI), which develops and maintains the NOMAD platform. NOMAD Oasis enables the creation of a customized NOMAD instance, allowing research teams to benefit from NOMAD’s features while tailoring data management to their specific needs and institutional policies. Leveraging this scalable and interoperable framework, we have developed domain-specific schemas, ontologies and plugins for solar cell research. These enable the structured capture of data and metadata from laboratory processes and measurements. The HZB NOMAD plugin has shown encouraging results: it is being adopted by an increasing number of research groups, including a large EU consortium project- PERSEUS, which focuses on printed perovskite solar cells for large-area applications. This work serves as a practical example of how data stewardship can be integrated into daily research activities to foster reproducibility, interoperability, and long-term value.

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WORKFLOW 1. Lab Process +Data Standardization with FAIR principles Schema creation + TFSCO Ontology 2. Sample Fabrication Data Upload +Lab & Scientist Friendly ELN or customized Spreadsheet tracking experimental values 3. Measurement Upload Connecting characterization measurements to the created samples and their fabrication properties 4. Analysis Tools + Incentivizing Platfrom Usage Dashboard: Browse through sample characteristics and performances of samples shared within group + Any group member can have overview of the group efforts Voila Apps: Result and data analysis tools, either common in the field or customized for individual uses and for individual or bundled samples + Easies the researcher workload of manually performing data analysis for their results in eg. Origin PEROVSKITE SOLAR CELL RESEARCH DATA DIGITALIZATION Department "Solution Processing of Hybrid Materials & Devices" (SE-ALM) Helmholtz-Zentrum Berlin (HZB) Zum Großen Windkanal 2 | 12489 Berlin | Germany *[email protected] D. Gkogkou*, M. Götte, E. Nandayapa, P. Graniero, Y. Razeghi, E. Unger gefördert durch die Deutsche Forschungsgemeinschaft (DFG) NOMAD Plugin with specialized schemas for thin film solar cell & catalysis research ✓Reproducibility: Standardized data capture and metadata ✓Interoperability: Domain-specific schemas and ontologies ✓Long-term Value: FAIR-compliant datasets with analytical tools ✓Community Adoption: Growing user base across multiple research groups In the works: Data quality/curation process for data publication CHALLENGES Standardization Gap: Lack of standardized and structured solar cell research metadata within the scientific community, contributing to the reproducibility crisis Adoption Barriers: Traditional FAIR data approaches often lack immediate value for daily research activities, making adoption difficult despite long-term scientific benefits APPROACHES NOMAD Infrastructure : Create plugins with schemas of perovskite solar cells and electrochemical energy methods Expert Collaboration: Work with field experts and lab scientists ensuring accuracy and (re)usability Analytics for Incentivizing: Providing field specific tools to encourage data uploading End 2022 First Data Steward Fall 2025 Team of 10 Data Stewards ~ 2400 Uploaded Samples HZB internal & external plugin users 185 HZB NOMAD accounts 6 NOMAD OASES SYNERGIES NomadFAIRmatNFDI Forshcungszentrum Jülich KIT PVcomB EU PSC Consortium PERSEUS - 17 Partners