Evolution of Two-Dimensional Perovskite Solar Cells: A Bibliometric Analysis of Research Trends and Collaborations

Rapid advancement of two-dimensional perovskite solar cells (2D PSCs) has established them at the forefront of emerging next-generation solar cell technologies. This is primarily due to their exceptional environmental stability, high efficiency, tunable band gap, and versatile optoelectronic properties. This paper presents a comprehensive bibliometric analysis to map the intellectual landscape and evolutionary trajectory of 2D PSC research. Relevant data for the work were obtained from the Scopus database. The analytical capabilities of MetaInfoSci software were used to quantify publication trends, international collaboration networks, and other trends in the research field of 2D PSCs. Analysis of the corresponding results shows exponential growth in annual publications, signaling the research area’s emerging significance within the global community of researchers. The results reveal a consistent focus by scientists on lead-free compositions, 2D/3D heterostructures, and interface engineering over the previous decade. This study provides a systematic, data-driven overview of the field's development, serving as a strategic roadmap to identify foundational contributions, current research priorities, and emerging frontiers for researchers and regulators.