Franky So

Walter and Ida Freeman Distinguished Professor

Franky So started his career as a research scientist working on polymer optical modulators at Hoechst Celanese Research Division. In 1993, he joined Motorola and then became the Head of the OLED research group. In 2001, and he joined OSRAM Opto Semiconductors and became the Head of OLED Research. He joined the University of Florida in 2005 and became the Rolf E. Hummel Professor in Electronic Materials in the Department of Materials Science and Engineering at the University of Florida. In 2015, he joined the Department of Materials Science and Engineering at the North Carolina State University where he is currently the Walter and Ida Freeman Distinguished Professor. While at Motorola, he was named the Distinguished Innovator and Master Innovator. He was the recipient of the DOE Solid State Lighting Program Significant Achievement Awards. Dr. So holds 80 issued patents and has published more than 160 peer-reviewed articles with a Google H-index of 63. He is the Editor-in-Chief of the journal Materials Science and Engineering Reports and serves as an Associate Editor for IEEE Journal of Photovoltaics, IEEE Journal of Display Technology, SPIE Journal of Photonic Technology and Organic Electronics. So is a Distinguished Lecturer of the IEEE Photonics Society, a Charter Fellow of the National Academy of Inventors, a Fellow of IEEE, OSA and SPIE.

So’s current research focus is on electronics properties and photophysics of organic semiconductors and quantum dots used for OLEDs, solar cells, photodetectors, sensors and transistors. His recent works include: use of corrugated structures to fabricate OLEDs and perovskite solar cells, charge transport, injection and charge transfer excitons in organic semiconductors, dielectric properties of polymer-fullerene blends for photovoltaics, vertical permeable metal base transistors, vertical field effect transistors, PbS quantum dots photodetectors and phototransistors, and ferroelectric transistors.



Ph.D. 1991

Electrical Engineering

University of Southern California

M.S. 1982

Materials Science

Massachusetts Institute of Technology

B.A. 1979


Hamilton College


Critical Role of Polymer Aggregation and Miscibility in Nonfullerene-Based Organic Photovoltaics
Yi, X., Peng, Z., Xu, B., Seyitliyev, D., Ho, C. H. Y., Danilov, E. O., … So, F. (2020), ADVANCED ENERGY MATERIALS.
Efficient Energy Funneling in Quasi-2D Perovskites: From Light Emission to Lasing
Lei, L., Seyitliyev, D., Stuard, S., Mendes, J., Dong, Q., Fu, X., … So, F. (2020), ADVANCED MATERIALS.
High-Performance Tandem Organic Solar Cells Using HSolar as the Interconnecting Layer
Ho, C. H. Y., Kim, T., Xiong, Y., Firdaus, Y., Yi, X., Dong, Q., … So, F. (2020), ADVANCED ENERGY MATERIALS.
Mode Dispersion in Photonic Crystal Organic Light-Emitting Diodes
Fu, X., Peng, C., Samal, M., Barange, N., Chen, Y.-A., Shin, D.-H., … So, F. (2020), ACS APPLIED ELECTRONIC MATERIALS, 2(6), 1759–1767.
Multi-mode Organic Light-Emitting Diode to Suppress the Viewing Angle Dependence
Dong, C., Fu, X., Cao, L., Amoah, S., Gundogdu, K., Li, J., & So, F. (2020), ACS APPLIED MATERIALS & INTERFACES, 12(28), 31667–31676.
Acceptor Gradient Polymer Donors for Non-Fullerene Organic Solar Cells
Jones, A. L., Zheng, Z., Riley, P., Pelse, I., Zhang, J., Abdelsamie, M., … Reynolds, J. R. (2019), CHEMISTRY OF MATERIALS, 31(23), 9729–9741.
Defect Passivation by Fullerene Derivative in Perovskite Solar Cells with Aluminum-Doped Zinc Oxide as Electron Transporting Layer
Dong, Q., Ho, C. H. Y., Yu, H., Salehi, A., & So, F. (2019), CHEMISTRY OF MATERIALS, 31(17), 6833–6840.
Eliminate angular color shift in top-emitting OLEDs through cavity design
Dong, C., Fu, X., Amoah, S., Rozelle, A., Shin, D.-H., Salehi, A., … So, F. (2019), JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY, 27(8), 469–479.
Long-Wavelength Lead Sulfide Quantum Dots Sensing up to 2600 nm for Short-Wavelength Infrared Photodetectors
Dong, C., Liu, S., Barange, N., Lee, J., Pardue, T., Yi, X., … So, F. (2019), ACS APPLIED MATERIALS & INTERFACES, 11(47), 44451–44457.
Panchromatic All-Polymer Photodetector with Tunable Polarization Sensitivity
Sen, P., Yang, R., Rech, J. J., Feng, Y., Ho, C. H. Y., Huang, J., … Brendan T. O'Connor. (2019), ADVANCED OPTICAL MATERIALS, 7(4).

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