User profiles for Shohei Kumagai

"Shohei Kumagai"

- Verified email at m.titech.ac.jp - Cited by 1332

Shohei Kumagai

- Verified email at ccalumni.meijo-u.ac.jp - Cited by 183

Robust, high-performance n-type organic semiconductors

T Okamoto, S Kumagai, E Fukuzaki, H Ishii… - Science …, 2020 - science.org
Organic semiconductors (OSCs) are important active materials for the fabrication of next-generation
organic-based electronics. However, the development of n-type OSCs lags behind …

Therapeutic administration of IL-11 exhibits the postconditioning effects against ischemia-reperfusion injury via STAT3 in the heart

…, M Shiragaki, S Kumagai… - American Journal …, 2012 - journals.physiology.org
Activation of cardiac STAT3 by IL-6 cytokine family contributes to cardioprotection. Previously,
we demonstrated that IL-11, an IL-6 cytokine family, has the therapeutic potential to …

Molecular doping in organic semiconductors: fully solution-processed, vacuum-free doping with metal–organic complexes in an orthogonal solvent

R Fujimoto, Y Yamashita, S Kumagai… - Journal of Materials …, 2017 - pubs.rsc.org
Chemical doping in π-conjugated organic semiconductors, which involves a redox reaction
between a host π-conjugated material and a dopant, is achieved by either co-evaporation, co…

[HTML][HTML] Scalable fabrication of organic single-crystalline wafers for reproducible TFT arrays

S Kumagai, A Yamamura, T Makita, J Tsurumi… - Scientific Reports, 2019 - nature.com
Building on significant developments in materials science and printing technologies, organic
semiconductors (OSCs) promise an ideal platform for the production of printed electronic …

Coherent Electron Transport in Air‐Stable, Printed Single‐Crystal Organic Semiconductor and Application to Megahertz Transistors

S Kumagai, S Watanabe, H Ishii, N Isahaya… - Advanced …, 2020 - Wiley Online Library
Organic semiconductors (OSCs) have attracted growing attention for optoelectronic
applications such as field‐effect transistors (FETs), and coherent (or band‐like) carrier transport …

Efficient molecular doping of polymeric semiconductors driven by anion exchange

…, J Tsurumi, M Ohno, R Fujimoto, S Kumagai… - Nature, 2019 - nature.com
The efficiency with which polymeric semiconductors can be chemically doped—and the
charge carrier densities that can thereby be achieved—is determined primarily by the …

Nitrogen-containing perylene diimides: Molecular design, robust aggregated structures, and advances in n-type organic semiconductors

S Kumagai, H Ishii, G Watanabe, CP Yu… - Accounts of Chemical …, 2022 - ACS Publications
Conspectus Organic semiconductors (OSCs) have attracted much attention because of their
potential applications for flexible and printed electronic devices and thus have been …

Mixture of counting cnns: Adaptive integration of cnns specialized to specific appearance for crowd counting

S Kumagai, K Hotta, T Kurita - arXiv preprint arXiv:1703.09393, 2017 - arxiv.org
This paper proposes a crowd counting method. Crowd counting is difficult because of large
appearance changes of a target which caused by density and scale changes. Conventional …

Synergistic Use of Pyridine and Selenophene in a Diketopyrrolopyrrole‐Based Conjugated Polymer Enhances the Electron Mobility in Organic Transistors

Q Liu, S Kumagai, S Manzhos, Y Chen… - Advanced Functional …, 2020 - Wiley Online Library
To achieve semiconducting materials with high electron mobility in organic field‐effect transistors
(OFETs), low‐lying energy levels (the highest occupied molecular orbital (HOMO) and …

Mixed-orbital charge transport in N-shaped benzene-and pyrazine-fused organic semiconductors

CP Yu, S Kumagai, T Kushida, M Mitani… - Journal of the …, 2022 - ACS Publications
The hole-carrier transport of organic semiconductors is widely known to occur via intermolecular
orbital overlaps of the highest occupied molecular orbitals (HOMO), though the effect of …