Journal papers
Google Scholar Citations Meiji Univ. faculty database 2025
Impact of Spontaneous Orientation Polarization in the Emission Layer on the Charge Accumulation and Exciton−Polaron Quenching Properties of Ir-Complex-based Organic Light-Emitting Diodes ACS Applied Electronic Materials, (2025). doi: 10.1021/acsaelm.5c00355.
Degradation properties of organic light-emitting diodes with modified interface charge density via dipolar doping studied by displacement current measurement Advanced Electronic Materials, 2400788 (2025). doi: 10.1002/aelm.202400788. Open Access!
Enhancement of Spontaneous Orientation Polarization in Glassy Organic Semiconductor Mixtures The Journal of Physical Chemistry B 129 (2), 779-787 (2025). doi: 10.1021/acs.jpcb.4c07138.
2024
Angular Distribution Analysis of Permanent Dipole Moments in Amorphous Organic Semiconductor Film with Large Spontaneous Orientation Polarization The Journal of Physical Chemistry C 128 (14), 6072-6079 (2024). doi: 10.1021/acs.jpcc.3c08315.
2023
Controlling charge accumulation properties at organic hetero-interfaces using dipolar doping of hole transport layers Proceedings of SPIE 12659 , 1265905 (2023). (5 pages) doi: 10.1117/12.2675356.
Light-emitting electrochemical cells based on nanogap electrodes Nano Letters (2023). (7 pages) doi: 10.1021/acs.nanolett.3c02001.
2022
Electrically induced light emission via nanoscale vacuum discharge in nanogap electrodes without luminescent molecules Journal of Applied Physics 132 , 174303 (2022). (7 pages) doi: 10.1063/5.0102395.
Charge-carrier Dynamics and Exciton-polaron Quenching Studied Using Simultaneous Observations of Displacement Current and Photoluminescence Intensity The Journal of Physical Chemistry C, 126 , pp. 18520-18527 (2022). doi: 10.1021/acs.jpcc.2c05871.
Controlling charge accumulation properties of organic light-emitting diodes using dipolar doping of hole transport layers Advanced Optical Materials, 2201278 (2022). (10 pages) doi: 10.1002/adom.202201278 Open Access!
(Invited review) Understanding spontaneous orientation polarization of amorphous organic semiconducting films and its application to devices Synthetic Metals 288 , 117101 (2022). (14 pages) doi: 10.1016/j.synthmet.2022.117101 Open Access for 6 months!
2021
(J. Mater. Chem. C HOT Papers) Active refractive index control using a stably evaporable perfluororesin for high-outcoupling-efficiency organic light-emitting diodes Journal of Materials Chemistry C (2021) 9 , 11115-11125 (2021). doi: 10.1039/D1TC02478G
Spontaneous Orientation Polarization in Organic Light-Emitting Diodes and its Influence on Charge Injection, Accumulation, and Degradation Properties Chapter 11 in Semiconductors for Optoelectronics , Ed. Hiroyoshi Naito, John Wiley & Sons, Ltd. pp. 273-293 (2021). doi: https://doi.org/10.1002/9781119146131.ch11
Molecular orientation anisotropy and hole transport properties of diluted semiconducting films of poly(p-phenylenevinylene) derivative Organic Electronics 96 , 106246 (2021). (8 pages) doi: https://doi.org/10.1016/j.orgel.2021.106246
Effect of chemically induced permittivity changes on the plasmonic properties of metal nanoparticles Communications Materials 2 , 54 (2021). (8 pages) doi: https://doi.org/10.1038/s43246-021-00159-6
Investigating Bulk-to-Interface Doping Relaxation in Light-Emitting Electrochemical Cells via Displacement Current Measurements ACS Applied Electronic Materials 3(5) , pp.2355-2361 (2021). doi: 10.1021/acsaelm.1c00237
Enhancement of the molecular orientation of TPBi in coevaporated films of UGH‐2 host molecules Surface and Interface Analysis 53(4) , pp.460-465 (2021). doi: 10.1002/sia.6933
Oxidative Vaporization Etching for Molybdenum Tip Formation in Air Applied Surface Science, 542 , 148642 (2021) (9pages). doi: 10.1016/j.apsusc.2020.148642
Influence of Intermolecular Interactions on the Formation of Spontaneous Orientation Polarization in Organic Semiconducting Films Journal of the Society for Information Display 29(1) , pp.29-37 (2021). doi: 10.1002/jsid.956
2020
Bubble-Free Transfer Technique for High-Quality Graphene/Hexagonal Boron Nitride van der Waals Heterostructures ACS Applied Materials & Interfaces 12(7) , 8533-8538 (2020). doi: 10.1021/acsami.9b19191
2019
(Featured Article) Topological valley currents in bilayer graphene/hexagonal boron nitride superlattices Applied Physics Letters 114(24) , 243105 (2019) (4 pages). doi: 10.1063/1.5094456
(Review) Spontaneous orientation polarization in organic light-emitting diodes Japanese Journal of Applied Physics 58(SF) , SF0801 (2019) (10 pages). doi:10.7567/1347-4065/ab0de8
(Spotlights, MNC2018 Outstanding Paper) Photocontrollable ambipolar transistors with π-conjugated diarylethene photochromic channels Japanese Journal of Applied Physics 58(SD) SDDH03 (2019) (4 pages). doi:10.7567/1347-4065/ab09ce
Ambipolar carrier transport in an optically controllable diarylethene thin film transistor Organic Electronics 64 , 205-208 (2019). doi:10.1016/j.orgel.2018.10.020 .
2018
Simultaneous observation of the electrical and luminous characteristics of light-emitting electrochemical cells by using a displacement current measurement technique Advanced Optical Materials 6(20) , 1800318 (2018) (6 pages). doi:10.1002/adom.201800318 .
Observation of spontaneous orientation polarization in evaporated films of organic light-emitting diode materials Organic Electronics 58 , 313-317 (2018).
2017
Negative Capacitance in an Organic Solar Cell Observed by Displacement Current Measurement Journal of Physics: Conference Series 924 , conference 1, 012012 (2017).
Molecular-Floating Gate Single-Electron Transistor Scientific Reports 7 , 1589 (2017). doi:10.1038/s41598-017-01578-7
Degradation Process in Pentacene-Based Organic Field-Effect Transistors Evaluated by Three-Terminal Capacitance-Voltage Measurements MRS Advances, DOI:10.1557/adv.2017.225, (2017).
2016
Observation of charge transport through CdSe/ZnS quantum dots in a single-electron transistor structure Journal of Applied Physics 120 , Issue 16, 164306 (2016).
Simulation of OLEDs with a polar electron transport layer Organic Electronics 39 , 244-249 (2016).
Significant relaxation of residual negative carrier in polar Alq3 film directly detected by high-sensitivity photoemission Applied Physics Express 9 , 021601 (2016).
Observation of ambipolar switching in a silver nanoparticle single-electron transistor with multiple molecular floating gates Japanese Journal of Applied Physics 55 , 03DC02 (2016).
2015
Analyzing Degradation Effects of Organic Light-Emitting Diodes via Transient Optical and Electrical Measurements Journal of Applied Physics 117 (21), 215502 (2015).
Effects of Interface Electronic Structures on Transition Voltage Spectroscopy of Alkanethiol Molecular Junctions The Journal of Physical Chemistry C 119 (22), pp. 12765–12771 (2015)
Spontaneous Orientation Polarization of Polar Molecules and Interface Properties of Organic Electronic Devices (in Japanese) Journal of the Vacuum Society of Japan 58 , 109-116 (2015). Invited
Charge carrier dynamics and degradation phenomena in organic light-emitting diodes doped by a thermally activated delayed fluorescence emitter Organic Electronics 17 , 184-191 (2015).
2014
Evaluation of internal potential distribution and carrier extraction properties of organic solar cells through Kelvin probe and time-of-flight measurements Journal of Applied Physics 116 (11), 114503 (2014).
Complete Demonstration of the Valence Electronic Structure Inside a Practical Organic Solar Cell Probed by Low Energy Photoemission Advanced Energy Materials 4 , 1301354 (2015).
Wavelength dependence and multiple-induced states in photoresponses of copper phthalocyanine-doped gold nanoparticle single-electron device Japanese Journal of Applied Physics 53 (1S), 01AC02 (2015)
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