Benjamin Grévin is a graduate of the Institut National Polytechnique de Grenoble (INPG) and of the former University Joseph Fourier Grenoble I (University Grenoble Alpes, UGA). He received the Ph.D. degree in 1998 under the supervision of Dr. Y. Berthier. His doctoral work dealt with NMR investigations of high Tc superconductors and related cuprates. After a postdoctoral stay at the Condensed Matter Research Department of Geneva University in the group of Prof. Ø. Fisher, he joined in 2000 the UMR5819 joint research center (CEA-CNRS-UGA). He was awarded the bronze medal of CNRS in 2005 and obtained the accreditation to direct research (Habilitation à diriger les recherches, HdR) in 2006.His current projects as Research Director (CNRS) deal with the development of advanced scanning probe microscopy techniques (nc-AFM/KPFM, time-resolved surface photo-voltage imaging), for local investigations of the opto-electronic properties of donor-acceptor bulk heterojunctions and molecular self-assemblies, hybrid perovskites and 2D van der Waals interfaces based on transition metal dichalcogenides.


Function
Research Director, CNRS (DR2, section 03), HdR

Research Interests:
Near field investigations of the opto-electronic properties of model systems for organic and hybrid photovoltaics and electronics. Pi-conjugated materials. 2D transition metal dichalcogenides. Hybrid perovskites. Non-contact Atomic Force Microscopy, Kelvin Probe Force Microscopy, Scanning Tunneling Microscopy and Spectroscopy, Qplus AFM driven dynamic nanostenciling. Time-resolved surface photovoltage imaging.

A few research highlights:

Multimodal Kelvin Probe Force Microscopy Investigations of a Photovoltaic WSe2/MoS2 Type-II Interface



see Y. Almadori et al. ACS Appl. Mater. Interfaces 10, 1363 (2018). https://pubs.acs.org/doi/pdf/10.1021/acsami.7b14616


Multimodal Kelvin Probe Force Microscopy Investigations of a Perovskites single crystals



see Y. Almadori et al.Beilstein J. Nanotechnol. 9, 1695 (2018). https://www.beilstein-journals.org/bjnano/articles/9/161

Time resolved surface photo-voltage imaging of bulk heterojunctions by KPFM under frequency modulated illumination


see P.A Fernandez Garrillo et al. ACS Appl. Mater. Interfaces 8, 31460 (2016). http://pubs.acs.org/doi/abs/10.1021/acsami.6b11423

NC-AFM/KPFM investigations of organic donor-acceptor interfaces



see F. Fuchs et al. ACS Nano 10 (1), 739–746 (2016). http://pubs.acs.org/doi/abs/10.1021/acsnano.5b05810

Kelvin Probe Force Microscopy investigations of the local electronic transport under field effect at the organic/dielectric interface


see Y. Luo et al. Adv. Mater. 19, 2267-2273 (2007).http://pubs.acs.org/doi/abs/10.1021/acsnano.5b05810

Qplus AFM driven nanostencil: a new tool for in situ fabrication of model samples & devices



see B. Grévin et al. J. Vac. Sci. Technol B 31, 021803 (2013). http://scitation.aip.org/content/avs/journal/jvstb/31/2/10.1116/1.4792253

Non-contact AFM and Scanning tunneling microscopy investigations of model pi-conjugated self-assemblies



see B. Grévin et al. Advanced Materials Advanced Materials. 21, 4124–4129 (2009).
http://onlinelibrary.wiley.com/doi/10.1002/adma.200803762/abstract

and F. Fuchs et al. Advanced Materials, 26 (37), 6416-6422 (2014). http://onlinelibrary.wiley.com/doi/10.1002/adma.201401221/abstract

Selection of publications

Almadori Y., Bendiab N., Grévin B.
"Multimodal Kelvin Probe Force Microscopy Investigations of a Photovoltaic WSe2/MoS2 Type-II Interface" ACS Appl. Mater. Interfaces 10, 1363 (2018).
DOI: 10.1021/acsami.7b14616
https://pubs.acs.org/doi/pdf/10.1021/acsami.7b14616

Almadori Y.,Moerman D., Martinez J.L., Leclère Ph., Grévin B.
"Multimodal non contact Atomic Force Microscopy and Kelvin Probe Force Microscopy Investigations of organolead tribromide perovskite single crystals"
Beilstein J. Nanotechnol. 9, 1695 (2018).
https://www.beilstein-journals.org/bjnano/articles/9/161

Fernandez Garrillo P.A., Borowik, L, Caffy F. Demadrille R, Grévin, B*
"Photo-Carrier Multi-Dynamical Imaging at the Nanometer Scale in Organic and Inorganic Solar Cells" ACS Appl. Mater. Int. 8, 31460 (2016). DOI: 10.1021/acsami.6b11423
http://pubs.acs.org/doi/abs/10.1021/acsami.6b11423

Fuchs F., Caffy F., Demadrille R., Mélin T., Grévin B.
“High resolution Kelvin Probe Force Microscopy Imaging of interface dipoles and photo−generated charges in organic donor−acceptor photovoltaic blends”, ACS Nano, 2016. DOI:10.1021/acsnano.5b05810
http://pubs.acs.org/doi/abs/10.1021/acsnano.5b05810

Fuchs F., Linares M., de Vet C., Leclère Ph., Demadrille R., Grévin B.
“On the photo-induced charge-carrier generation within monolayers of self-assembled organic donor-acceptor dyads". Advanced Materials, 2014.
DOI: 10.1002/adma.201401221
http://onlinelibrary.wiley.com/doi/10.1002/adma.201401221/abstract

Fuchs F., Grévin B., Bocquet F., Nony L., Loppacher C.
“Correct height measurements by Kelvin probe force microscopy: Poly(3-dodecylthiophene) on highly oriented pyrolytic graphite", Phys. Rev, 2013.
DOI:http://dx.doi.org/10.1103/PhysRevB.88.205423
http://dx.doi.org/10.1103/PhysRevB.88.205423

Grévin B., Jradi K., Yahya W. Z. N., De Bettignies R., Demadrille R.
“Fabrication of multi-scale electrodes on organic photovoltaic thin films and in situ electrical characterization by nanostencil combined with Qplus AFM” , J. Vac. Sci. Technol B, 2013.
DOI: 10.1116/1.4792253
http://scitation.aip.org/content/avs/journal/jvstb/31/2/10.1116/1.4792253

Spadafora E. J., Linares M., Yahya W. Z. N., Lincker F., Demadrille R., Grevin B.
“Local Local contact potential difference of molecular self-assemblies investigated by Kelvin Probe Force Microscopy”, Appl. Phys. Lett. 2011.
DOI: 10.1063/1.3662850
http://dx.doi.org/10.1063/1.3662850

Grévin B., Fakir M., Hayton J., Brun M., Demadrille R., Faure-Vincent J.
“Qplus AFM driven”, Rev. Sci. Inst. 2011.
DOI: 10.1063/1.3600898.
http://scitation.aip.org/content/aip/journal/rsi/82/6/10.1063/1.3600898

Spadafora E. J., Demadrille R., Ratier B., Grévin B.
“Imaging the Carrier Photogeneration in Nanoscale Phase Segregated Organic Heterojunctions by Kelvin Probe Force Microscopy” , Nano Lett. 2010.
DOI: 10.1021/nl101001d
http://pubs.acs.org/doi/abs/10.1021/nl101001d

Grévin B., Demadrille R., Linares M., Lazzaroni R., Leclère Ph.
“Probing the Local Conformation within Pi-Conjugated One-dimensional Supramolecular Stacks using Frequency Modulation Atomic Force Microscopy” Adv. Mater. 2009.
DOI: 10.1002/adma.200803762
http://onlinelibrary.wiley.com/doi/10.1002/adma.200803762/abstract

Linares, M., Scifo, L., Demadrille, R., Brocorens, P., Beljonne, D., Lazzaroni, R., Grevin, B.
“Two-Dimensional Self-Assemblies of Thiophene-Fluorenone Conjugated Oligomers on Graphite: A Joint STM and Molecular Modeling Study” J. Phys. Chem. C 2008.
DOI: 10.1021/jp711047x
http://pubs.acs.org/doi/abs/10.1021/jp711047x

Luo Y., Gustavo F., Henry J. Y., Mathevet F., Lefloch F., Sanquer M., Rannou P., Grévin B.
“Probing Local Electronic Transport at the Organic Single-Crystal/Dielectric Interface” Adv. Mater., 2007. DOI: 10.1002/adma.200700913
http://onlinelibrary.wiley.com/doi/10.1002/adma.200700913/abstract

Scifo L., Dubois M., Brun M., Rannou P., Latil S., Rubio A., Grévin B.
“Probing the Electronic Properties of Self-Organized Poly(3-dodecylthiophene) Monolayers by Two-Dimensional Scanning Tunneling Spectroscopy Imaging at the Single Chain Scale” Nano Lett. 2006.
DOI: 10.1021/nl061018w
http://pubs.acs.org/doi/abs/10.1021/nl061018w

Brun M., Decossas S., Triozon F., Rannou P., Grévin B.
“Nanometer scale mechanical properties probed by 2D dynamic force spectroscopy with rigid cantilever”
Appl. Phys. Lett., 2005.
DOI: 10.1063/1.1992670
http://dx.doi.org/10.1063/1.1992670

Brun M., Demadrille R., Rannou P., Pron A., Travers J. P., Grévin B.
“Multi-scale STM study of self-assembling phenomena in 2D polycrystals of pi-conjugated polymers : the case of regioregular poly(dioctylbithiophene-alt-fluorenone) ”, Adv. Mater. 2004.
DOI: 10.1002/adma.200400088
http://onlinelibrary.wiley.com/doi/10.1002/adma.200400088/abstract

Grévin B., Rannou P., Payerne R., Pron A., Travers J. P.
“STM investigations of self-organized poly(3-hexylthiophene) two-dimensional polycrystals”
DOI: 10.1002/adma.200304580
http://onlinelibrary.wiley.com/doi/10.1002/adma.200304580/abstract

Some research projects:

Partner of J2D (ANR, 2016-2019): Atomically sharp junctions based on stacked 2D materials: new building blocks for electronics. In partnership with Grenoble’s Institut Néel (CNRS-UGA, UPR 2940 coordinator L. Magaud) & LPTM.
Coordinator of trSPV project (2015-2016): time-resolved surface photovoltage, in partnership with LETI-Minatec.

Partner of NANOKAN (ANR, 2011-2015): Nanoscale spectroscopy of elementary charges and sub-10 Debye dipoles on solid-state or molecular model systems. In partnership with IEMN-UMR8520 (coordinator T. Mélin), IM2NP & FEMTO-ST.

Coordinator of ONDIEMO (ANR, 2006-2009): Outils nanométriques dynamiques intégrés pour l’électronique organique et moléculaire. In partnership with CEA-Saclay & CEA-LETI.

Coordinator of TrENTO (ACI, 2004-2007):Transport électronique dans les nano-transistors à effet de champ organiques. In partnership with IEMN-UMR8520 & CEA-DRFMC/SPSMS.