COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring. |
University of Cambridge > Talks.cam > Department of Materials Science & Metallurgy Seminar Series > Ferroelectric nanocomposites for enhanced photovoltaic and photoelectrocatalytic solar energy conversion
Ferroelectric nanocomposites for enhanced photovoltaic and photoelectrocatalytic solar energy conversionAdd to your list(s) Download to your calendar using vCal
If you have a question about this talk, please contact Julie Smith. Huge advances have been made in recent years in solar energy conversion from both established technologies such as silicon to emerging photovoltaics such as halide perovskites, and direct solar-to-fuel such as photoelectrochemical water splitting and CO2 reduction. Many of these technologies are either approaching their fundamental efficiency limits, or require new approaches to accelerate efficiency improvements. Here, I will present our work developing new devices based on ferroelectric-photovoltaic and ferroelectric-photocatalyst nanocomposites. Ferroelectrics produce a bulk photovoltaic effect (BPVE) that does not require a semiconductor junction therefore can produce above bandgap photovoltages. However they generally are poor light absorbers with low charge carrier mobilities. Therefore we intend to couple the BPVE with efficient photoabsorbers by intimately combining these materials in nanocomposite films. As a proof-of-concept for this effect we have combined photocatalyst materials such as Fe2O3 with porous ferroelectrics to efficiently couple the two effects together, demonstrating enhanced photocatalytic activity driven by the ferroelectric polarisation. We have also demonstrated a strain dependence of the BPVE in epitaxial BaTiO3 thin films, which has implications for optimisation of nanocomposite structures. This talk is part of the Department of Materials Science & Metallurgy Seminar Series series. This talk is included in these lists:
Note that ex-directory lists are not shown. |
Other listsBook Launch Film screening - 3 Deewarein (Three Walls) Dimer observables and Cauchy-Riemann operatorsOther talksKirk Lecture: Data-driven modelling of collective cell motility When movement meets coupling delays: synchronization and chimera states in a system of coupled oscillators From Modulation of Neurons and Small Networks to Climate Change Adaptive movement strategies in cyclic games during an epidemic Scalar Modular Bootstrap and Zeros of the Riemann Zeta Function Sustainability at The Netherlands eScience Center |