Shun Li

Shun Li


Tel.: +1 (514) 228-6850
Fax: +1 (450) 929-8102
shunli@emt.inrs.ca

Presently the use of solar cells to create electricity is among the most efficient and most widely employed methods for solar energy harvesting in the world. Unfortunately, current semiconductor-based photovoltaic materials can produce a maximum voltage no greater than the semiconductor’s electronic bandgap, thus limiting output voltage and the solar energy conversion efficiency.
Ferroelectric and multiferroic materials, which exhibit strong bulk photovoltaic effect, have several advantages compared with traditional semiconductor-based solar energy conversion materials. A ferroelectric thin film could have an internal electric field throughout the bulk region originating from electrical polarization that is not completely canceled out by screening charges near the ferroelectric-electrode interfaces. In addition, the photo-voltage output in a ferroelectric thin film is not limited by an energy barrier (band gap) like it is in semiconductor photovoltaic materials. Therefore, they offer a fundamentally different route to enhance the solar energy conversion efficiency and show potential for visible-light photovoltaic devices.
My project focuses on multiferroic thin-films for solar energy conversions. The main objective of this project is the synthesis, characterization and investigation of nanoscale ferroelectric thin films with high efficiency, and in particular aims at understanding how the nanostructures can influence the photovoltaic behavior of multiferroic thin films.

NFL publications


J. Chakrabartty, R. Nechache, S. Li, M. Nicklaus, A. Ruediger, and F. Rosei. Photovoltaic Properties of Multiferroic BiFeO3/BiCrO3 Heterostructures. Journal of the American Ceramic Society, 97, 1837–1840 (2014). (PDF).
S. Li, R. Nechache, I. A. V. Davalos, G. Goupil, L. Nikolova, M. Nicklaus, J. Laverdière, A. Ruediger, and F. Rosei. Ultrafast Microwave Hydrothermal Synthesis of BiFeO3 Nanoplates. Journal of the American Ceramic Society, 96, 3155–3162 (2013). (PDF).
S. Li, J. Zhang, M. G. Kibria, Z. Mi, M. Chaker, D. Ma, R. Nechache, and F. Rosei. Remarkably enhanced photocatalytic activity of laser ablated Au nanoparticle decorated BiFeO3 nanowires under visible-light. Chemical Communications, 49, 5856 (2013). (PDF).
S. Li, R. Nechache, C. Harnagea, L. Nikolova, and F. Rosei. Single-crystalline BiFeO3 nanowires and their ferroelectric behavior. Applied Physics Letters, 101, 192903 (2012). (PDF).