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Research Output 1994 2018

2018
12 Citations (Scopus)
Dendrimers
Organic light emitting diodes (OLED)
Fluorescence
Ethanol
Doping (additives)
9 Citations (Scopus)
Dendrimers
Organic light emitting diodes (OLED)
Substitution reactions
Fluorescence
Electrons
2 Citations (Scopus)

Insertion effect of spin-coated films of C60-ethylenediamine adduct on organic thin-film solar cells

Yamada, A., Izumoto, D., Akiyama, T., Fujita, K., Suzuki, A. & Oku, T., Jan 22 2018, The Irago Conference 2017: A 360-Degree Outlook on Critical Scientific and Technological Challenges for a Sustainable Society. Sandhu, A. & Sharma, J. (eds.). American Institute of Physics Inc., 020020. (AIP Conference Proceedings; vol. 1929).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

ethylenediamine
adducts
insertion
solar cells
thin films
2017
5 Citations (Scopus)

Cathode buffer composed of fullerene-ethylenediamine adduct for an organic solar cell

Kimoto, Y., Akiyama, T. & Fujita, K., Feb 1 2017, In : Japanese Journal of Applied Physics. 56, 2, 021601.

Research output: Contribution to journalArticle

ethylenediamine
Buffer layers
Fullerenes
adducts
fullerenes
1 Citation (Scopus)
Polyethyleneimine
Fullerenes
equivalent circuits
Equivalent circuits
Buffers
37 Citations (Scopus)
Organic light emitting diodes (OLED)
Agglomeration
Fluorescence
Dendrimers
Quantum efficiency

Necessity of interlayer in tandem organic solar cells composed of a bulk heterojunction unit cell and the equivalent circuit

Lan, S., Kimoto, Y. & Fujita, K., Sep 2 2017, In : Molecular Crystals and Liquid Crystals. 654, 1, p. 249-255 7 p.

Research output: Contribution to journalArticle

equivalent circuits
Equivalent circuits
Heterojunctions
heterojunctions
interlayers
40 Citations (Scopus)

Thermally activated delayed fluorescence OLEDs with fully solution processed organic layers exhibiting nearly 10% external quantum efficiency

Albrecht, K., Matsuoka, K., Yokoyama, D., Sakai, Y., Nakayama, A., Fujita, K. & Yamamoto, K., 2017, In : Chemical Communications. 53, 16, p. 2439-2442 4 p.

Research output: Contribution to journalArticle

Dendrimers
Triazines
Organic light emitting diodes (OLED)
Quantum efficiency
Fluorescence
2016

Carrier density and mobility in n-doped poly(P-phenylene vinylene)

Sakiyama, S., Komura, T., Iwashita, H., Mizutani, N. & Fujita, K., Jan 1 2016, In : Evergreen. 3, 1, p. 18-20 3 p.

Research output: Contribution to journalArticle

Carrier mobility
Carrier concentration
conductivity
Doping (additives)
Semiconductor materials
2 Citations (Scopus)
sprayers
Doping (additives)
polymers
carrier mobility
Film preparation
2 Citations (Scopus)
transistors
field effect transistors
hole mobility
vacuum
vacuum deposition
3 Citations (Scopus)

Influence of Processing Conditions on the Performance of Cu2ZnSnS4 Nanocrystal Solar Cells

Kida, T., Horita, K., Suehiro, S., Yuasa, M., Quitain, A. T., Tanaka, T., Fujita, K., Ishiwata, Y. & Shimanoe, K., Jan 1 2016, In : ChemistrySelect. 1, 1, p. 86-93 8 p.

Research output: Contribution to journalArticle

Nanocrystals
Solar cells
Processing
Photoelectrochemical cells
Chemical analysis
2 Citations (Scopus)

Mono-Substituted carbazole dendrimers as solution processable host materials for phosphorescent organic light-emitting diodes

Matsuoka, K., Albrecht, K., Yamamoto, K. & Fujita, K., Jan 1 2016, In : Journal of Photopolymer Science and Technology. 29, 2, p. 323-326 4 p.

Research output: Contribution to journalComment/debate

Dendrimers
Phosphorescence
Organic light emitting diodes (OLED)
carbazole
2015
149 Citations (Scopus)

Carbazole dendrimers as solution-processable thermally activated delayed-fluorescence materials

Albrecht, K., Matsuoka, K., Fujita, K. & Yamamoto, K., May 4 2015, In : Angewandte Chemie - International Edition. 54, 19, p. 5677-5682 6 p.

Research output: Contribution to journalArticle

Dendrimers
Fluorescence
Organic light emitting diodes (OLED)
Triazines
Quantum efficiency
3 Citations (Scopus)

Modulation of electrochemical property of carbon nanodot by post-chemical reductions

Matsuoka, K. I. & Fujita, K., Apr 1 2015, In : Colloids and Surfaces A: Physicochemical and Engineering Aspects. 470, p. 15-21 7 p.

Research output: Contribution to journalArticle

Electrochemical properties
Carbon
Modulation
modulation
carbon
42 Citations (Scopus)

Synthesis of Copper-Antimony-Sulfide Nanocrystals for Solution-Processed Solar Cells

Suehiro, S., Horita, K., Yuasa, M., Tanaka, T., Fujita, K., Ishiwata, Y., Shimanoe, K. & Kida, T., Aug 17 2015, In : Inorganic chemistry. 54, 16, p. 7840-7845 6 p.

Research output: Contribution to journalArticle

Antimony
Sulfides
antimony
Nanocrystals
sulfides
2014

Anode buffer for organic devices composed of gold nanoparticles prepared by arc plasma deposition

Wang, D., Yukitake, N. & Fujita, K., Jan 1 2014, Advanced Materials Science and Technology - ICAMST 2013. Trans Tech Publications, p. 451-454 4 p. (Advanced Materials Research; vol. 896).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Plasma deposition
Tin oxides
Indium
Anodes
Gold
6 Citations (Scopus)

C60-ethylenediamine adduct thin film as a buffer layer for inverted-type organic solar cells

Ono, Y., Akiyama, T., Banya, S., Izumoto, D., Saito, J., Fujita, K., Sakaguchi, H., Suzuki, A. & Oku, T., Jan 1 2014, In : RSC Advances. 4, 66, p. 34950-34954 5 p.

Research output: Contribution to journalArticle

ethylenediamine
Buffer layers
Thin films
Titanium oxides
Solar cells
8 Citations (Scopus)

Facile fabrication and photovoltaic application of [60]fullerene assembly films formed by reaction between fullerene and amines

Banya, S., Akiyama, T., Matsumoto, T., Fujita, K. & Oku, T., Jan 1 2014, In : Bulletin of the Chemical Society of Japan. 87, 12, p. 1335-1342 8 p.

Research output: Contribution to journalArticle

Fullerenes
ethylenediamine
Amines
Fabrication
Solar cells
34 Citations (Scopus)

Solution-processed Cu2ZnSnS4 nanocrystal solar cells: Efficient stripping of surface insulating layers using alkylating agents

Suehiro, S., Horita, K., Kumamoto, K., Yuasa, M., Tanaka, T., Fujita, K., Shimanoe, K. & Kida, T., Jan 16 2014, In : Journal of Physical Chemistry C. 118, 2, p. 804-810 7 p.

Research output: Contribution to journalArticle

Alkylating Agents
stripping
Nanocrystals
Solar cells
nanocrystals
2013
18 Citations (Scopus)

Hole injection enhancement by sparsely dispersed Au nanoparticles on indium tin oxide electrode in organic light emitting devices

Wang, D., Yasui, K., Ozawa, M., Odoi, K., Shimamura, S. & Fujita, K., Jan 14 2013, In : Applied Physics Letters. 102, 2, 023302.

Research output: Contribution to journalArticle

indium oxides
tin oxides
injection
nanoparticles
electrodes
2 Citations (Scopus)

Improvement of organic solar cells by anode buffer omposed of evaporated gold nanoparticles

Wang, D., Yukitake, N. & Fujita, K., Oct 1 2013, In : Japanese journal of applied physics. 52, 10 PART1, 100211.

Research output: Contribution to journalArticle

Anodes
anodes
buffers
solar cells
Gold
2 Citations (Scopus)

Titration analysis of electron storage and discharge properties of carbon nanodots

Matsuoka, K. I., Shibuya, R. & Fujita, K., Feb 21 2013, In : Chemistry Letters. 42, 2, p. 156-158 3 p.

Research output: Contribution to journalArticle

Titration
Carbon
Electrons
Paraquat
Experiments
2012

A new spray deposition technique to fabricate polymer electronic devices

Fujita, K., Mar 2012, In : Kobunshi. 61, 3, p. 132-133 2 p.

Research output: Contribution to journalArticle

Polymers
Film preparation
Photovoltaic cells
Polymer films
Heterojunctions

Intermediate layers for tandem structure of bulk heterojunction photovoltaic cells

Kawanami, A. & Fujita, K., Dec 1 2012, Organic Photovoltaics XIII. 84771L. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 8477).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Bulk Heterojunction
Photovoltaic cells
photovoltaic cells
Heterojunctions
heterojunctions
1 Citation (Scopus)

Nanostructured epitaxial thin films of Fe-based superconductors with enhanced superconducting properties

Mele, P., Matsumoto, K., Nagayoshi, H., Fujita, K., Yoshida, Y., Ichino, Y., Kiss, T., Ichinose, A., Mukaida, M., Maiorov, B., Balakirev, F. F., Baily, S. A. & Civale, L., Jan 1 2012, In : Materials Research Society Symposium Proceedings. 1434, January, p. 35-44 10 p.

Research output: Contribution to journalConference article

Superconducting films
Epitaxial films
superconducting films
Pulsed laser deposition
pulsed laser deposition
2011
Photovoltaic cells
Heterojunctions
Polymers
Fullerenes
Semiconductor materials
2010
8 Citations (Scopus)

Anode buffer layer containing au nanoparticles for high stability organic solar cells

Morioka, R., Yasui, K., Ozawa, M., Odoi, K., Ichikawa, H. & Fujita, K., Oct 1 2010, In : Journal of Photopolymer Science and Technology. 23, 3, p. 313-316 4 p.

Research output: Contribution to journalArticle

Buffer layers
Anodes
Nanoparticles
Polystyrenes
Energy conversion
1 Citation (Scopus)
Photovoltaic cells
photovoltaic cells
sprayers
Heterojunctions
heterojunctions

Effect of annealing treatment on the performance of organic solar cell

Aziz, T. H. T., Salleh, M. M., Yahaya, M., Triyana, K. & Fujita, K., 2010, ICSE 2010 - Proceedings IEEE International Conference on Semiconductor Electronics. p. 45-47 3 p. 5549471

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Solar cells
Annealing
Energy conversion
Short circuit currents
Conversion efficiency
2009
4 Citations (Scopus)

Bulk heterojunction photovoltaic cells prepared by evaporative spray deposition uslng ultradilute solution technique

Maeda, R., Iwamoto, T., Shakutsui, M. & Fujita, K., Dec 1 2009, In : Journal of Photopolymer Science and Technology. 22, 4, p. 525-528 4 p.

Research output: Contribution to journalArticle

Photovoltaic cells
Heterojunctions
Fullerenes
Polymers
Spin coating
10 Citations (Scopus)

Electrical bistability of composite film comprising hyper-branched polymer and gold nanoparticle

Ichikawa, H., Yasui, K., Ozawa, M. & Fujita, K., May 1 2009, In : Synthetic Metals. 159, 9-10, p. 973-976 4 p.

Research output: Contribution to journalArticle

Composite films
Equivalent circuits
Gold
Polymers
Capacitors
27 Citations (Scopus)

Improved efficiency of polymer light-emitting diodes by inserting a hole transport layer formed without thermal treatment above glass transition temperature

Shakutsui, M., Matsuura, H. & Fujita, K., Jan 1 2009, In : Organic Electronics. 10, 5, p. 834-842 9 p.

Research output: Contribution to journalArticle

glass transition temperature
Light emitting diodes
Polymers
light emitting diodes
Heat treatment
12 Citations (Scopus)
Light emitting diodes
sprayers
Polymers
light emitting diodes
polymers
2008
4 Citations (Scopus)

Fabrication of bulk heterojunction photovoltaic cells with controlled distribution of p-n components by Evaporative Spray deposition using Ultradilute Solution

Shakutsui, M., Iwamoto, T., Maeda, R., Tsutsui, T. & Fujita, K., Dec 18 2008, Organic Photovoltaics IX. 705215. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 7052).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Bulk Heterojunction
Photovoltaic cells
photovoltaic cells
Spray
sprayers

Large domain film of bis(styrilanthracene) derivatives prepared by a simple melt-freezing process and the improvement of field effect hole mobility

Kontshi, M., Fujita, K. & Tsuisui, T., Jun 13 2008, In : Japanese Journal of Applied Physics. 47, 6 PART 1, p. 4732-4735 4 p.

Research output: Contribution to journalArticle

Hole mobility
hole mobility
Freezing
freezing
Derivatives

Layered polymer structure for pn junction photovoltaic cells prepared by evaporative spray deposition using ultradilute solution

Maeda, R., Shakutsui, M., Tsutsui, T. & Fujita, K., Dec 24 2008, ECS Transactions - Organic Semiconductor Materials and Devices. 25 ed. Vol. 11. p. 67-72 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Photovoltaic cells
Polymers
Coating techniques
Spin coating
15 Citations (Scopus)

Polymer field effect transistors of F8T2 prepared by evaporative spray deposition using ultradilute solution technique

Sagane, K., Shakutsui, M., Tsutsui, T. & Fujita, K., Aug 25 2008, In : Journal of Photopolymer Science and Technology. 21, 2, p. 193-196 4 p.

Research output: Contribution to journalArticle

Field effect transistors
Polymers
Pixels
Polymer solutions
Aerosols
2007
8 Citations (Scopus)

Design of multilayer structure for UV organic light-emitting diodes based on 2-(2-naphthyl)-9,9′-spirobifluorene

Etori, H., Yasuda, T., Jin, X. L., Fujita, K., Mataka, S. & Tsutsui, T., Aug 6 2007, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 46, 8 A, p. 5071-5075 5 p.

Research output: Contribution to journalArticle

Organic light emitting diodes (OLED)
laminates
Multilayers
light emitting diodes
injection
3 Citations (Scopus)
high gravity environments
field effect transistors
fabrication
electrodes
thin films
6 Citations (Scopus)

Improved performance in polymer-fullerene blend photovoltaic cells by insertion of C60 interlayer

Maeda, R., Fujita, K. & Tsutsui, T., Jan 1 2007, In : Molecular Crystals and Liquid Crystals. 471, 1, p. 123-128 6 p.

Research output: Contribution to journalArticle

Fullerenes
Photovoltaic cells
photovoltaic cells
fullerenes
insertion
Light emitting diodes
Polymers
Substrates
Temperature
Conjugated polymers
15 Citations (Scopus)

Multichannel biosensing platform of surface-immobilized gold nanospheres for linear and nonlinear optical imaging

Tsuboi, K., Fukuba, S., Naraoka, R., Fujita, K. & Kajikawa, K., Jul 10 2007, In : Applied Optics. 46, 20, p. 4486-4490 5 p.

Research output: Contribution to journalArticle

Nanospheres
platforms
Gold
gold
Imaging techniques
1 Citation (Scopus)

Parylene-C and high-k polymer bilayer gate dielectric for low-operating voltage organic field-effect transistors

Ashimine, T., Onoue, T., Yasuda, T., Fujita, K. & Tsutsui, T., Jan 1 2007, In : Molecular Crystals and Liquid Crystals. 471, 1, p. 221-227 7 p.

Research output: Contribution to journalArticle

Organic field effect transistors
Gate dielectrics
Polymers
field effect transistors
polymers

Phenylenevinylene oligomers and poly-p-phenylene- vinylene for organic field-effect transistors

Tsutsui, T., Yasuda, T., Kayashima, H. & Fujita, K., 2007, Organic Materials and Devices for Displays and Energy Conversion, OMD 2007. Optical Society of America

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Organic field effect transistors
oligomers
Oligomers
field effect transistors
Polyphenylene vinylene
1 Citation (Scopus)

Poly(p-phenylenevinylene)-based field-effect transistors with platinum source-drain electrodes

Kayashima, H., Yasuda, T., Fujita, K. & Tsutsui, T., Mar 21 2007, In : Journal of Physics D: Applied Physics. 40, 6, p. 1646-1648 3 p., 010.

Research output: Contribution to journalArticle

Field effect transistors
Platinum
platinum
Hole mobility
field effect transistors
2006
25 Citations (Scopus)

Ambipolar carrier transport in polycrystalline pentacene thin-film transistors

Yasuda, T., Goto, T., Fujita, K. & Tsutsui, T., Jan 1 2006, In : Molecular Crystals and Liquid Crystals. 444, p. 219-224 6 p.

Research output: Contribution to journalArticle

Carrier transport
Thin film transistors
transistors
Hole mobility
hole mobility
17 Citations (Scopus)

Electrical bistability of organic thin-film device using Ag electrode

Terai, M., Fujita, K. & Tsutsui, T., Apr 25 2006, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 45, 4 B, p. 3754-3757 4 p.

Research output: Contribution to journalArticle

Thin film devices
Electrodes
electrodes
Nanoclusters
Electric potential
14 Citations (Scopus)

High efficiency polarization-sensitive organic photovoltaic devices

Tanaka, H., Yasuda, T., Fujita, K. & Tsutsui, T., Jun 19 2006, In : Applied Physics Letters. 88, 25, 253506.

Research output: Contribution to journalArticle

polarization
ITO (semiconductors)
polarized light
photocurrents
heterojunctions

Highly-oriented organic thin films and application for photovoltaic device

Tanaka, H., Yasuda, T., Fujita, K. & Tsutsui, T., Jan 1 2006, In : Molecular Crystals and Liquid Crystals. 462, 1, p. 67-73 7 p.

Research output: Contribution to journalArticle

Conversion efficiency
Heterojunctions
Thin films
thin films
heterojunctions