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13 results on '"D’AVINO P"'

3. Disentangling the multiorbital contributions of excitons by photoemission exciton tomography

Author

Wiebke Bennecke, Andreas Windischbacher, David Schmitt, Jan Philipp Bange, Ralf Hemm, Christian S. Kern, Gabriele D’Avino, Xavier Blase, Daniel Steil, Sabine Steil, Martin Aeschlimann, Benjamin Stadtmüller, Marcel Reutzel, Peter Puschnig, G. S. Matthijs Jansen, and Stefan Mathias

Subjects
Science
Abstract

Abstract Excitons are realizations of a correlated many-particle wave function, specifically consisting of electrons and holes in an entangled state. Excitons occur widely in semiconductors and are dominant excitations in semiconducting organic and low-dimensional quantum materials. To efficiently harness the strong optical response and high tuneability of excitons in optoelectronics and in energy-transformation processes, access to the full wavefunction of the entangled state is critical, but has so far not been feasible. Here, we show how time-resolved photoemission momentum microscopy can be used to gain access to the entangled wavefunction and to unravel the exciton’s multiorbital electron and hole contributions. For the prototypical organic semiconductor buckminsterfullerene (C60), we exemplify the capabilities of exciton tomography and achieve unprecedented access to key properties of the entangled exciton state including localization, charge-transfer character, and ultrafast exciton formation and relaxation dynamics.

Published
2024
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5. Orientation dependent molecular electrostatics drives efficient charge generation in homojunction organic solar cells

Author

Yifan Dong, Vasileios C. Nikolis, Felix Talnack, Yi-Chun Chin, Johannes Benduhn, Giacomo Londi, Jonas Kublitski, Xijia Zheng, Stefan C. B. Mannsfeld, Donato Spoltore, Luca Muccioli, Jing Li, Xavier Blase, David Beljonne, Ji-Seon Kim, Artem A. Bakulin, Gabriele D’Avino, James R. Durrant, and Koen Vandewal

Subjects
Science
Abstract

Though single-material organic solar cells are attractive for next-generation photovoltaic technologies, designing new materials with ideal properties remains a challenge. Here, the authors report the use of orientation-dependent molecular electrostatics to realise efficient homojunction devices.

Published
2020
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6. A self-operating broadband spectrometer on a droplet

Author

P. Malara, A. Giorgini, S. Avino, V. Di Sarno, R. Aiello, P. Maddaloni, P. De Natale, and G. Gagliardi

Subjects
Science
Abstract

Compact spectrometers can be useful in many applications and many sophisticated architectures have been proposed. In this work, the authors show that with an evaporating droplet on a fiber tip, spectrometry can be robustly and accurately performed with a simple and passive microfluidic system.

Published
2020
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7. The midbody interactome reveals unexpected roles for PP1 phosphatases in cytokinesis

Author

Luisa Capalbo, Zuni I. Bassi, Marco Geymonat, Sofia Todesca, Liviu Copoiu, Anton J. Enright, Giuliano Callaini, Maria Giovanna Riparbelli, Lu Yu, Jyoti S. Choudhary, Enrico Ferrero, Sally Wheatley, Max E. Douglas, Masanori Mishima, and Pier Paolo D’Avino

Subjects
Science
Abstract

The midbody is an organelle present at the bridge connecting two cells at the end of cell division. Here, the authors use mass spectrometry to define the midbody interactome and uncover a role for PP1 phosphatases in microtubule dynamics and regulation of cytokinesis.

Published
2019
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8. Crystal step edges can trap electrons on the surfaces of n-type organic semiconductors

Author

Tao He, Yanfei Wu, Gabriele D’Avino, Elliot Schmidt, Matthias Stolte, Jérôme Cornil, David Beljonne, P. Paul Ruden, Frank Würthner, and C. Daniel Frisbie

Subjects
Science
Abstract

The microstructure of organic semiconductors affects their transport properties, but directly probing this relationship is challenging. He et al. show that step edges act as electron traps on the surfaces of n-type single crystals, resulting in a field effect transistor mobility that depends on step density.

Published
2018
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9. Rotator side chains trigger cooperative transition for shape and function memory effect in organic semiconductors

Author

Hyunjoong Chung, Dmytro Dudenko, Fengjiao Zhang, Gabriele D’Avino, Christian Ruzié, Audrey Richard, Guillaume Schweicher, Jérôme Cornil, David Beljonne, Yves Geerts, and Ying Diao

Subjects
Science
Abstract

Martensitic transition is commonly seen in steel and shape memory alloys but rarely in organic materials. Chung et al. discover martensitic transitions in organic electronics and utilize it in designing field-effect transistors, leading to shape memory effect that in return modifies charge transport properties.

Published
2018
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12. Periodic potentials in hybrid van der Waals heterostructures formed by supramolecular lattices on graphene

Author

Marco Gobbi, Sara Bonacchi, Jian X. Lian, Yi Liu, Xiao-Ye Wang, Marc-Antoine Stoeckel, Marco A. Squillaci, Gabriele D’Avino, Akimitsu Narita, Klaus Müllen, Xinliang Feng, Yoann Olivier, David Beljonne, Paolo Samorì, and Emanuele Orgiu

Subjects
Science
Abstract

Two-dimensional material heterostructures enable unique electronic features by introducing periodic potentials. Here, Gobbiet al. use a monolayer supramolecular lattice with a tunable one-dimensional periodic potential to modify the electronic structure of graphene.

Published
2017
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