个人简介
Born in the United States, Sivula studied at the University of Minnesota, where he obtained a Bachelor’s degree in Chemical Engineering. He continued his studies in Chemical Engineering at the University of California (Berkeley), where he joined the research group of Prof. Jean Fréchet. During his thesis research he worked to developed strategies to control the morphology of conjugated polymer-based photovoltaic devices and gained his doctorate in 2007. Sivula then joined the Laboratory of Photonics and Interfaces (LPI, led by Professor Michael Grätzel) at the EPFL. There he developed nanostructured films with iron oxide for hydrogen production using solar energy. He was promoted to research group leader in LPI in 2008 and in 2011 he accepted an appointment as tenure-track assistant professor at EPFL in the Institute of Chemical Science and Engineering. Currently he is an Associate Professor of Chemical Engineering and he leads the LIMNO lab while also teaching courses on Transport Phenomena, Chemical Engineering Practicals, Product design, and solar energy conversion systems.
EDUCATION
Ph.D. in Chemical Engineering (University of California, Berkeley) May 2007
with High Honors. Dissertation title: Controlling the morphology of solution-processed bulk
heterojunction photovoltaics. Directed by Prof. Jean M.J. Fréchet.
B.Ch.E. (Bachelor’s of Chemical Engineering, University of Minnesota, Twin Cities) June 2002
with High Distinction and emphasis in polymer science. Minor degrees in mathematics and chemistry.
PROFESSIONAL EXPERIENCE
École Polytechnique Fédérale de Lausanne (EPFL), Institute of Chemical Sciences and Engineering
Associate Professor of Chemical Engineering with Tenure 2018 –
Director of the Laboratory for Molecular Engineering of Optoelectronic Nanomaterials (LIMNO)
Teaching: Transport Phenomena (I and II), Chemical engineering laboratory practical (I and II),Solar photovoltaics and energy systems, Chemical Product Design.
Tenure-Track Assistant Professor of Chemical Engineering 2011 –2018
École Polytechnique Fédérale de Lausanne (EPFL)
Laboratory of Photonics and Interfaces (head : Prof. Michael Grätzel)
Research Group Leader 2008 – 2011
Post-Doctoral Research Scientist 2007 – 2008
University of California, Berkeley, Prof. Jean M.J. Fréchet Laboratories
Graduate Research Assistant 2002 – 2007
University of Minnesota, Twin Cities, Prof. Timothy Walseth Laboratories
Undergraduate Research Assistant 1998 – 2002
研究领域
Overview
Today’s traditional electronic devices are based on crystalline semiconductors, like silicon, that require strict control over material purity and crystallinity making them difficult and costly to synthesize. Moreover, functional structures of crystalline semiconductor devices are prepared today by “top-down” methodologies. These conditions necessitate complicated fabrication procedures and lead to expensive products that are difficult to prepare at large scale. We envision that tomorrow’s devices will be fabricated with simple and inexpensive solution-based printing techniques and “bottom-up” self-assembly of functional structures. Attaining this goal will provide access to low-cost, large area and flexible displays, sensors and solar cells. However, the development of semiconducting materials that can be solution-processed and self-assembled into functional thin-films at low temperature, while simultaneously providing excellent device characteristics, represents a significant challenge for materials chemists and engineers. Our research is directed to engineering new, inexpensive, and solution-processable semiconductor materials and implementing them into high performance devices. We are especially driven by the goal of inexpensive solar energy conversion. As such, we focus on materials systems with sufficient earth abundance and environmental compatibility, and we employ techniques that are highly scalable and economically feasible. LIMNO incorporates competences of semiconductor synthesis, characterization, and device fabrication while individual projects concentrate on directing the composition, crystallinity, self-assembly, and morphology of our new materials using bottom-up techniques in order to control the semiconductor band gap, light absorption, charge transfer, carrier transport and device performance.
Research areas
近期论文
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Green hydrogen production using Shewanella oneidensis MR-1 bioanode and cuprous oxide-based photocathode M. Morgante / K. Sivula; F. Fischer (Dir.) Lausanne, EPFL, 2024.
Precious metal-free (photo)electrochemistry for green hydrogen production H. E. Johnson / K. Sivula; V. Artero (Dir.) Lausanne, EPFL, 2023.
Photoelectrochemical Cell Engineering for Solar Energy Conversion D. Zhang / K. Sivula; U. A. Hagfeldt (Dir.) Lausanne, EPFL, 2023.
Materials engineering for improved stability of perovskite solar cells Y. Kim / K. Sivula; U. A. Hagfeldt (Dir.) Lausanne, EPFL, 2023.
Synthesis and Characterization of Functionalized Spacer Cations for the Incorporation in Layered Perovskites S. Nussbaum / K. Sivula; J. H. Yum (Dir.) Lausanne, EPFL, 2023.
Do You Really Mean to Call It Highly Efficient? K. Sivula Acs Energy Letters. 2023-05-12. Vol. 8, num. 5, p. 2385-2386. DOI : 10.1021/acsenergylett.3c00772.
Enabling Direct Photoelectrochemical H2 Production Using Alternative Oxidation Reactions on WO3 N. Plainpan; R. Ketkaew; S. Luber; K. Sivula Chimia. 2023-03-01. Vol. 77, num. 3, p. 110-115. DOI : 10.2533/chimia.2023.110.
Assembling a Photoactive 2D Puzzle: From Bulk Powder to Large- Area Films of Semiconducting Transition-Metal Dichalcogenide Nanosheets R. A. Wells; K. Sivula Accounts Of Materials Research. 2023-03-15. DOI : 10.1021/accountsmr.2c00209.
Tungsten oxide-based photoanodes: biomass valorization and the effects of oxygen vacancies N. Plainpan / K. Sivula (Dir.) Lausanne, EPFL, 2023.
Derivative voltammetry: a simple tool to probe reaction selectivity in photoelectrochemical cells N. Plainpan; F. Boudoire; K. Sivula Sustainable Energy & Fuels. 2022. Vol. 6, num. 17, p. 3926-3930. DOI : 10.1039/D2SE00692H.
Light-Responsive Oligothiophenes Incorporating Photochromic Torsional Switches A. Jozeliunaite; A. Rahmanudin; S. Grazulis; E. Baudat; K. Sivula et al. Chemistry-A European Journal. 2022-10-31. p. e202202698. DOI : 10.1002/chem.202202698.
An Organic Semiconductor Photoelectrochemical Tandem Cell for Solar Water Splitting D. Zhang; H-H. Cho; J-H. Yum; M. Mensi; K. Sivula Advanced Energy Materials. 2022-09-08. Vol. 12, num. 42, p. 2202363. DOI : 10.1002/aenm.202202363.
Effects of surface wettability on (001)-WO3 and (100)-WSe2: A spin-polarized DFT-MD study F. Creazzo; R. Ketkaew; K. Sivula; S. Luber Applied Surface Science. 2022-11-01. Vol. 601, p. 154203. DOI : 10.1016/j.apsusc.2022.154203.
Semiconducting two dimensional transition metal dichalcogenides via solution-processable routes R. A. Wells / K. Sivula (Dir.) Lausanne, EPFL, 2022.
Engineering of PEM-PEC photocathodes for solar-driven hydrogen production M. C. M. Caretti / K. Sivula (Dir.) Lausanne, EPFL, 2022.
Exploring new avenues for perovskite photovoltaics: Molecular functionalization of layered lead-halide perovskites and defect mitigation in lead-free double perovskites B. A. Primera Darwich / K. Sivula; J. H. Yum (Dir.) Lausanne, EPFL, 2022.
Organic Semiconductors For Photoelectrochemical Applications A. Sekar / K. Sivula (Dir.) Lausanne, EPFL, 2022.
Systematic investigations of uranium carbide composites oxidation from micro- to nano-scale: Application to waste disposal N-T. Vuong / K. Sivula; T. Stora (Dir.) Lausanne, EPFL, 2021.
Novel Interfacial Characterization and Surface Engineering in Semiconductor Electrodes for Optimized Solar Fuel Production Y. Liu / K. Sivula; N. Guijarro Carratala (Dir.) Lausanne, EPFL, 2021.
Mott–Schottky Analysis of Photoelectrodes: Sanity Checks Are Needed K. Sivula ACS Energy Letters. 2021-07-09. Vol. 6, num. 7, p. 2549-2551. DOI : 10.1021/acsenergylett.1c01245.
Organic Semiconductors as Photoanodes for Solar-driven Photoelectrochemical Fuel Production A. Sekar; K. Sivula Chimia. 2021-03-01. Vol. 75, num. 3, p. 169-179. DOI : 10.2533/chimia.2021.169.
Direct photoelectrochemical oxidation of hydroxymethylfurfural on tungsten trioxide photoanodes C. R. Lhermitte; N. Plainpan; P. Canjura; F. Boudoire; K. Sivula RSC Advances. 2021. Vol. 11, num. 1, p. 198-202. DOI : 10.1039/D0RA09989A.
Hydrogenation of ZnFe2O4 Flat Films: Effects of the Pre-Annealing Temperature on the Photoanodes Efficiency for Water Oxidation A. Polo; C. R. J. Lhermitte; M. V. Dozzi; E. Selli; K. Sivula Surfaces. 2020-03-12. Vol. 3, num. 1, p. 93-104. DOI : 10.3390/surfaces3010009.
Achieving visible light-driven hydrogen evolution at positive bias with a hybrid copper-iron oxide|TiO2-cobaloxime photocathode C. Tapia; E. Bellet-Amalric; D. Aldakov; F. Boudoire; K. Sivula et al. Green Chemistry. 2020-05-21. Vol. 22, num. 10, p. 3141-3149. DOI : 10.1039/d0gc00979b.
Understanding Surface Recombination Processes Using Intensity-Modulated Photovoltage Spectroscopy on Hematite Photoanodes for Solar Water Splitting Y. Liu; N. Guijarro; K. Sivula Helvetica Chimica Acta. 2020-05-07. p. e2000064. DOI : 10.1002/hlca.202000064.
FeO-based nanostructures and nanohybrids for photoelectrochemical water splitting S. Kment; K. Sivula; A. Naldoni; S. P. Sarmah; H. Kmentova et al. Progress In Materials Science. 2020-05-01. Vol. 110, p. 100632. DOI : 10.1016/j.pmatsci.2019.100632.
Cu2O photocathodes with band-tail states assisted hole transport for standalone solar water splitting L. Pan; Y. Liu; L. Yao; D. Ren; K. Sivula et al. Nature Communications. 2020-01-16. Vol. 11, num. 1, p. 318. DOI : 10.1038/s41467-019-13987-5.
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