Associate Professor | City University of Hong Kong | China
Dr. Sam Hsien-Yi Hsu is a tenured Associate Professor in the School of Energy and Environment and an affiliate faculty member in the Department of Materials Science and Engineering at City University of Hong Kong, where he leads an integrated research program spanning hybrid perovskite semiconductors, photoelectrochemistry, electrocatalysis, solar-energy conversion, and sustainable environmental technologies. His work bridges advanced materials synthesis, interfacial charge engineering, nanostructured device fabrication, and next-generation photovoltaic and photoelectrocatalytic systems, contributing significantly to high-efficiency perovskite photovoltaics, tandem solar cell engineering, wastewater-to-energy platforms, and catalytic processes for carbon-neutral energy generation. With 140 peer-reviewed publications, his research is featured in internationally recognized journals such as Advanced Energy Materials, Advanced Functional Materials, Angewandte Chemie, Energy & Environmental Science, and Nature Synthesis, reflecting both depth and global impact. Dr. Hsu maintains active collaborations with leading groups across North America, Europe, and Asia, strengthening the international reach of his work and fostering multidisciplinary innovation. His editorial appointments across multiple journals and his extensive involvement in organizing conferences in materials science, energy research, and nanotechnology underscore his leadership in the global scientific community. Beyond publishing, he contributes to professional societies, academic review panels, and research centers dedicated to clean energy and sustainable technologies, where his expertise supports the development of emerging materials and systems for renewable-energy deployment and environmental remediation. His research continues to advance fundamental understanding while enabling practical pathways toward a more sustainable energy future. Dr. Hsu’s academic influence and research excellence are reflected in his strong metrics: 4,676 citations, 140 documents, and an h-index of 40, underscoring his sustained contributions to global scientific advancement.
Profiles: Google Scholar | Scopus | ORCID | ResearchGate
Featured Publications
1. Sun, C., Jiang, Y., Cui, M., Qiao, L., Wei, J., Huang, Y., Zhang, L., He, T., Li, S., … Hsu, H.-Y. (2021). High-performance large-area quasi-2D perovskite light-emitting diodes. Nature Communications, 12(1), 2207. Cited by: 301
2. Li, Y., Ji, L., Liu, R., Zhang, C., Mak, C. H., Zou, X., Shen, H. H., Leu, S. Y., & Hsu, H.-Y. (2018). A review on morphology engineering for highly efficient and stable hybrid perovskite solar cells. Journal of Materials Chemistry A, 6, 12842–12875. Cited by: 243
3. Shang, S., Xiong, W., Yang, C., Johannessen, B., Liu, R., Hsu, H.-Y., Gu, Q., … (2021). Atomically dispersed iron metal site in a porphyrin-based metal–organic framework for photocatalytic nitrogen fixation. ACS Nano, 15(6), 9670–9678. Cited by: 229
4. Islam, M. K., Wang, H., Rehman, S., Dong, C., Hsu, H.-Y., Lin, C. S. K., & Leu, S. Y. (2020). Sustainability metrics of pretreatment processes in a waste-derived lignocellulosic biomass biorefinery. Bioresource Technology, 298, 122558. Cited by: 148
5. Ji, L., Hsu, H.-Y., Lee, J. C., Bard, A. J., & Yu, E. T. (2018). High-performance photodetectors based on solution-processed epitaxial grown hybrid halide perovskites. Nano Letters, 18(2), 994–1000. Cited by: 136