7th Workshop on Nanotube Optics and Nanospectroscopy (WONTON 2018)

Session

Poster Session

9 Jul 2018, 17:00

The Prince Hakone Lake Ashinoko

16. Cavity-control of bright and dark interlayer excitons in van der Waals heterostructures

Mr Michael Förg (Ludwig-Maximilians-Universität Munich)

09/07/2018, 17:00

Poster

Monolayer transition metal dichalcogenides integrated in optical microcavities host exciton-polaritons as a hallmark of the strong light-matter coupling regime [1]. Analogous concepts for hybrid light-matter systems employing spatially indirect excitons with a permanent electric dipole moment in heterobilayer crystals promise realizations of exciton-polariton gases and condensates with...

8. Cryogenic spectroscopy of sp3 defect states in carbon nanotubes

Manuel Nutz (Ludwig-Maximilians-University Munich)

09/07/2018, 17:00

Poster

Photoactive defect states in semiconducting single-walled carbon nanotubes (CNTs) have the potential to enable novel applications in quantum photonic technologies. While early experiments have established cryogenic CNTs as quantum light emitters [1], more recent work has identified luminescent defect states as sources of single photons up to room temperature [2,3]. For chemically-engineered...

30. Effect of functionalization and subsequent thermal treatment on photoluminescence properties of single-walled carbon nanotubes

Dr Yutaka Maeda (Department of Chemistry, Tokyo Gakugei University)

09/07/2018, 17:00

Poster

54. Enhanced Raman scattering of graphene using double resonance in silicon photonic crystal nanocavities

Dr Widianta Gomulya (Nanoscale Quantum Photonics Laboratory, RIKEN)

09/07/2018, 17:00

Poster

20. Evaluation of substituent effects on the potential levels of locally-functionalized single-walled carbon nanotubes using in situ photoluminescence spectroelectrochemistry

Mr Tomonari Shiraishi (Kyushu University)

09/07/2018, 17:00

Poster

12. High-Speed and integrated graphene blackbody emitters

Yusuke Fukazawa

09/07/2018, 17:00

Poster

28. Kinetics of diazonium functionalization of carbon nanotubes

Ms Kerstin Müller (Julius Maximilian University Würzburg, Germany)

09/07/2018, 17:00

Poster

46. Modulation-Doped Multiple Quantum Wells of Aligned Single-Wall Carbon Nanotubes

Ms Natsumi Komatsu (Rice University)

09/07/2018, 17:00

Poster

60. Monolayer WSe2-MoS2 Lateral Heterojunction Light-Emitting Diodes

Dr Jiang Pu (Nagoya University)

09/07/2018, 17:00

Poster

22. Optical properties of core-shell systems based on carbon nanotubes

Lucile Orcin-Chaix

09/07/2018, 17:00

Poster

24. Optical Properties of Oxidized Single-Wall Carbon Nanotubes

Mari Ohfuchi (Fujitsu Labs.)

09/07/2018, 17:00

Poster

14. Photon antibunching in single-walled carbon nanotubes at telecommunication wavelengths and room temperature

Rintaro Kawabe (Hideyuki Maki Group in Keio University (Department of Applied Physics and Physico-Informatics,Faculty of Science and Technology)

09/07/2018, 17:00

Poster

2. Photophysical properties of porphyrin–single-walled carbon nanotube linked systems with various spacer lengths

Prof. Tomokazu Umeyama (Kyoto University)

09/07/2018, 17:00

Poster

6. Thin films from carbon nanotubes of highly tuned structure and properties

Dr Dawid Janas (Department of Chemistry, Silesian University of Technology, B. Krzywoustego 4, 44-100, Gliwice, Poland)

09/07/2018, 17:00

Poster

Due to remarkable electrical, thermal, optical and other properties of carbon nanotubes they have attracted significant interest from research groups all over the world. However, to implement them in the real life, we still need better methods to control their structure at the nanoscale and also techniques to turn these highly defined materials into macroscopic ensembles. In this contribution,...

56. Tracing individual growth process of single-walled carbon nanotubes by digitally coding isotope labels

Dr Keigo Otsuka (The University of Tokyo)

09/07/2018, 17:00

Poster

67. Achieving 20% Efficiency Perovskite Solar Cells with High Stability by using Semiconducting Single-walled Carbon Nanotube Grain Bridges

Dr Il Jeon (The University of Tokyo)

11/07/2018, 17:00

Poster

Since liquid-junction perovskite solar cells (PSCs), the development of organo-lead halide perovskite photovoltaics research has gained momentum with the achievement of the solid-state PSCs in 2012. High absorption coefficient, long-range diffusion length and high defect tolerance of PSCs enable remarkable certified power conversion efficiencies (PCEs) over 20%. Although PSCs are proven to be...

35. Dielectric properties of vertically aligned carbon nanotubes in the mid-IR and THz spectral range

Prof. Hartmut Roskos (Physics Institute, Goethe-University )

11/07/2018, 17:00

Poster

68. Effects of Chirality and Defect Introduction on the Intermediate Frequency Mode

Dr Takumi Inaba (Tokyo University of Science)

11/07/2018, 17:00

Poster

An intermediate frequency mode (IFM) of single-walled carbon nanotubes (SWCNTs) has intriguing properties. The IFM originates from a phonon branch that has acoustic nature in graphene, and has non-zero momentum. Phonons with these properties are usually not analyzable with photons. However, the IFM of SWCNTs was successfully observed in prior reports [1, 2]. Remarkable features of the IFM may...

7. Environmental electrometry with luminescent carbon nanotubes

Jonathan Noe (Ludwig-Maximilian University Munich)

11/07/2018, 17:00

Poster

We demonstrate that localized excitons in luminescent carbon nanotubes can be utilized to study electrostatic fluctuations in the nanotube environment with sensitivity down to the elementary charge. By monitoring the temporal evolution of the cryogenic photoluminescence from individual carbon nanotubes grown on silicon oxide and hexagonal boron nitride we characterize the dynamics of charge...

69. Long-lived direct and indirect interlayer excitons in van der Waals heterostructures

Ursula Wurstbauer

11/07/2018, 17:00

Poster

45. Molecular screening effects on trion binding energies and electronic band gaps in air-suspended carbon nanotubes

Dr Shunsuke Tanaka (Quantum Optoelectronics Research Team, RIKEN Center for Advanced Photonics)

11/07/2018, 17:00

Poster

47. Narrow-band thermal exciton radiation in individual suspended single-walled carbon nanotubes

Dr Taishi Nishihara (Nagoya University)

11/07/2018, 17:00

Poster

5. Phonon Assigning of G-band from Suspended Single-walled Carbon Nanotubes

Mr Yuichiro Tanaka (Department of Physics, Tokyo University of Science)

11/07/2018, 17:00

Poster

9. Photocurrent Spectroscopy of Dye Sensitized Carbon Nanotubes

Dr Benjamin Flavel (Karlsruhe Institute of Technology)

11/07/2018, 17:00

Poster

Monochiral (7,5) single walled carbon nanotubes (SWCNTs) are integrated into a field effect transistor device in which the built-in electric field at the nanotube:metal contact allows for exciton separation under external light bias. Variable wavelength spectroscopy and 2D surface mapping of devices consisting of 10 – 20 nanotubes is performed in the visible, and a strong correlation between...

59. Photoluminescence from Single-walled Carbon Nanotubes on hexagonal Boron Nitride Substrates

Shohei Chiashi (The University of Tokyo)

11/07/2018, 17:00

Poster

Photoluminescence (PL) spectroscopy is one of the important analysis techniques for the optical properties of single-walled carbon nanotubes (SWNTs). However, PL spectra are measured only from surfactant-wrapped SWNTs [1], suspended SWNTs [2], and vertically-aligned SWNTs [3]. For optical and opto-electronic applications of SWNTs, SWNTs which lie on substrates and emit PL signal are needed. In...

19. Post modification approach for photoluminescence modulation of locally functionalized single-walled carbon nanotubes

Mr Tamehito Shiga (Kyushu University)

11/07/2018, 17:00

Poster

23. Probing the optical dipole transition and vibrational coherences in individual (5,4) carbon nanotubes by femtosecond pulse shaping

Dr Richard Ciesielski (Ludwig-Maximilians-Universität München)

11/07/2018, 17:00

Poster

55. Reflectance of Carbon Nanotube Forest metamaterials

Hiroshi Furuta (School of Systems Engineering, Kochi University of Technology)

11/07/2018, 17:00

Poster

CNT forest of high emissivity, nearly ideal “black-body absorber[1]”, is attracting researchers as a candidate material for the future application of high-sensitive sensor, thermal energy storage device[2], and so on. Recently, metamaterials, electro-magnetic circuit to the incident EM-wave, opened a method to design desired optical properties. We recently reported CNT forest metamaterial in...

65. Resonance Raman Signature of Intertube Excitons in Compositionally-Defined Carbon Nanotube Bundles

Dr Jeffrey R. Simpson (Towson University and National Institute of Standards & Technology)

11/07/2018, 17:00

Poster

Electronic interactions in low-dimensional nanomaterial heterostructures can lead to novel optical responses arising from exciton delocalization over the constituent materials. Similar phenomena have been suggested to arise between closely interacting semiconducting carbon nanotubes of identical structure. Such behavior in carbon nanotubes has potential to generate new exciton physics, impact...

21. Spectral tuning of optical coupling between air-mode nanobeam cavities and individual carbon nanotubes

Hidenori Machiya (Nanoscale Quantum Photonics Laboratory, RIKEN)

11/07/2018, 17:00

Poster

We design high quality factor air-mode nanobeam cavities by finite-difference time-domain simulations, and utilize the cavities to enhance the emission of air-suspended carbon nanotubes [1]. The cavities are fabricated from silicon-on-insulator wafers, and nanotubes are synthesized over the cavities by chemical vapor deposition. Photoluminescence spectroscopy is performed on the devices, where...