Lingnan University and the Universidad de la República (University of the Republic, UdelaR), the largest public higher education institution in Uruguay, signed a Memorandum of Understanding (MoU) on 10 February 2026 on Lingnan campus, formally establishing an academic partnership. This is an important step in advancing academic cooperation between Lingnan and universities in South America.
Prof S. Joe Qin, President and Wai Kee Kau Chair Professor of Data Science, welcomes the delegation, introduces them to the university, and explores opportunities for collaboration during the meeting.
Prof Héctor Cancela, President of the UdelaR, and Mr Federico Lage, Consul-General of Uruguay in the Hong Kong SAR, led a delegation to Lingnan University, where they were welcomed by Prof S. Joe Qin, President and Wai Kee Kau Chair Professor of Data Science of Lingnan University, Prof Raymond Chan Hon-fu, Vice-President (Academics) cum Provost and Lam Man Tsan Chair Professor of Scientific Computing, Prof Xin Yao, Vice-President (Research and Innovation) and Tong Tin Sun Chair Professor of Machine Learning, Prof Zhang Dian, Associate Dean of the School of Data Science and Person-in-Charge of the Division of Industrial Data Science, Prof Jean-Michel Morel, Chair Professor of the Division of Industrial Data Science, and Prof Bradley R. Barnes, Special Advisor to President on Internationalization and Director of Global Education.
President S Joe Qin said, “Lingnan University is committed to supporting the vision of the Hong Kong Special Administrative Region of the People’s Republic of China in developing Hong Kong into an international post-secondary education hub and promoting the ‘Study in Hong Kong’ brand. In response to changing times, the University has in recent years integrated artificial intelligence and data science elements across various disciplines, advancing its distinctive ‘Liberal Arts + Technology’ development model. More than 20 per cent of our academic and research staff were recognised by Stanford University in 2025 as being among the world’s top 2% of scientists. We look forward to working with the Universidad de la República to leverage the strengths of both institutions, advancing interdisciplinary research collaboration and developing innovative solutions to pressing global challenges.”
The delegation visits the Lingnan campus and the Lingnan Entrepreneurship Initiative (LEI).
The signing ceremony was chaired by Prof Raymond Chan Hon-fu and Prof Héctor Cancela, and attended by senior representatives of both universities. Prof Chan said “Lingnan University actively establishes partnerships with leading universities worldwide. To date, we have set up academic collaborations with over 280 institutions across Asia, Europe, the Americas and Africa. UdelaR is the oldest public university in Uruguay, and this will open up valuable networks, academic resources, and exchanges between researchers in Lingnan and South America, making the most of both universities’ strengths, and improving knowledge transfer.”
In the MoU, the two universities will establish a framework for academic exchange and cooperation in research, and explore potential areas of collaboration, including the exchange of academic and research staff, possible student exchange, and joint academic research and publication in fields of interest to both. The partnership aims to expand cross-regional academic networks.
The UdelaR delegation toured the Lingnan campus and the Lingnan Entrepreneurship Initiative (LEI), gaining an understanding of the University’s innovation and entrepreneurship ecosystem, which encourages faculty and students from different disciplines to design innovative humanitarian technologies together, and teaches students to address social issues through pivotal research.
Lingnan University and the Universidad de la República (University of the Republic, Udelar) sign a Memorandum of Understanding. The ceremony is officiated by Prof Raymond Chan Hon-fu, Vice-President (Academics) cum Provost and Lam Man Tsan Chair Professor of Scientific Computing of Lingnan University (left), and Prof Héctor Cancela, President of the Udelar (right), with senior representatives of both universities attending the event.
Lingnan University has made considerable progress in recent years, and came first globally under the United Nations Sustainable Development Goal SDG 4 (Quality Education) in the Times Higher Education (THE) World University Impact Rankings 2025, the first university in the Hong Kong SAR to achieve a global first in any UN SDG. Lingnan was also in the Times Higher Education (THE) World University Rankings 2026 for the first time, one of the top 301–350 universities worldwide out of 2,191 institutions, its international outlook rated 47th. Universidad de la República (University of the Republic, Udelar) is consistently ranked as the top university in Uruguay and a premier public institution in Latin America, holding a #650 position in the 2026 QS World University Rankings.
In response to the global demand for clean energy transition, tandem solar cells are recognised as a crucial next-generation technology that will significantly improve solar power efficiency. Scholars from Lingnan University’s Wu Jieh Yee School of Interdisciplinary Studies (WJYSIS) and their collaborators have innovatively developed a novel interfacial structure, which substantially reduces energy loss and successfully overcomes the current limitations of perovskite solar cells in voltage, further improving the efficiency of converting sunlight into electricity. Their findings, published in the top-tier international journal Nature Communications, affirm Lingnan University’s research capabilities in the fields of renewable energy materials and photovoltaic technology.
Conventional strategies often lead to the uncontrolled diffusion of ligand molecules into the perovskite bulk or their severe loss during solvent washing, failing to form an effective ligand layer. The research team proposes a novel strategy that successfully immobilises the ligand molecules onto the SAM molecules, constructing a localised 2D/3D structure.
The joint research team, comprising Prof Chen Xi, Dean of the WJYSIS and Chair Professor of Interdisciplinary Studies at Lingnan University; Prof Wu Shengfan, Assistant Professor (Presidential Early Career Scholar) of the WJYSIS at Lingnan University, and colleagues from the City University of Hong Kong, has developed a novel method to form a localised 2D/3D structure within the perovskite solar cell, reducing energy loss and improving charge extraction efficiency and interfacial contact. At the same time, by utilising tandem solar cell technology, in which the top material absorbs short-wavelength light and the bottom material absorbs long-wavelength light. This arrangement substantially improves light utilisation efficiency.
The figure illustrates the novel SAM molecule designed by the team, named CbzBT-B. This molecule exhibits excellent stability, and its energy levels are better aligned with the perovskite. The sulfur atoms within this molecule can interact with the ligands, ensuring the formation of a localised 2D/3D perovskite heterojunction structure at the bottom interface.
The team explained that this innovative technology optimises the solar cell in multiple ways. Firstly, it improves the quality of the thin film, allowing this light-absorbing material to grow more uniformly, thereby reducing intrinsic defects. Secondly, the technology greatly reduces defect density at the interfaces, suppressing undesirable energy loss and thus minimising voltage loss. The technology also improves the energy level alignment at the interface, enabling more efficient charge extraction.
Solar cell test results indicate that wide-bandgap perovskite solar cells employing this strategy achieve significant enhancements in open-circuit voltage and efficiency, while exhibiting excellent operational stability. This strategy is applicable to various wide-bandgap perovskite solar cells and has broken multiple performance records. Based on this, the team fabricated tandem solar cells, achieving a high efficiency of 27.11 per cent.
The research team has successfully developed highly efficient and stable wide-bandgap perovskite solar cells, setting multiple cell performance records. The cell demonstrated excellent performance during long-term operational testing, maintaining over 95 per cent of its efficiency even after continuous operation for 700 hours. According to the team’s projections, the efficiency of this cell can still be maintained at over 90 per cent after 1,800 hours of long-term operation. Meanwhile, based on this technology, the power conversion efficiency of the perovskite-organic tandem solar cell reaches 27.11 per cent, among the highest efficiencies for this type of tandem solar cells.
Prof Chen Xi, Dean of the WJYSIS and Chair Professor of Interdisciplinary Studies at Lingnan University.
Prof Wu, co-corresponding author of the paper, said “This achievement builds upon our sustained and in-depth exploration of interface engineering and tandem photovoltaic devices. It provides a reliable foundation for future large-scale applications. We will continue to drive the advancement of related technologies toward commercialisation, transforming efficient and stable energy solutions into commercial products to address climate challenges and energy security needs, contributing to societal sustainable development.”
Prof Wu Shengfan, Assistant Professor (Presidential Early Career Scholar) of the WJYSIS at Lingnan University.
Prof Chen Xi commended the outcome highly, saying “Lingnan has been actively promoting interdisciplinary research in recent years. This breakthrough demonstrates the University’s strengths and commitment to tackling global energy challenges and developing clean energy technologies. Our team will continue to transform innovative research achievements into practical solutions, supporting the global transition towards a green and low-carbon future.”
The research paper was published in the top-tier international journal Nature Communications. Read the full study here: Localized 2D/3D heterojunction enhances photovoltage for perovskite-organic tandem solar cells.
