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1

222–282 nm AlGaN and InAlGaN-based deep-UV LEDs fabricated on high-quality AlN on sapphire

Hideki Hirayama, Sachie Fujikawa, Norimichi Noguchi, Jun Norimatsu, Takayoshi Takano, Kenji Tsubaki, Norihiko Kamata

Journal:

physica status solidi (a)

Year:

2009

Language:

english

File:

PDF, 867 KB

english, 2009

2

222 nm Deep-Ultraviolet AlGaN Quantum Well Light-Emitting Diode with Vertical Emission Properties

Hirayama, Hideki, Noguchi, Norimichi, Kamata, Norihiko

Journal:

Applied Physics Express

Year:

2010

Language:

english

File:

PDF, 233 KB

english, 2010

3

Milliwatt power 270 nm-band AlGaN deep-UV LEDs fabricated on ELO-AlN templates

Hideki Hirayama, Jun Norimatsu, Norimichi Noguchi, Sachie Fujikawa, Takayoshi Takano, Kenji Tsubaki, Norihiko Kamata

Journal:

physica status solidi (c)

Year:

2009

Language:

english

File:

PDF, 325 KB

english, 2009

4

Nonradiative recombination centers in GaAs:N δ-doped superlattice revealed by two-wavelength-excited photoluminescence

Dulal Haque, Md., Kamata, Norihiko, Fukuda, Takeshi, Honda, Zentaro, Yagi, Shuhei, Yaguchi, Hiroyuki, Okada, Yoshitaka

Journal:

Journal of Applied Physics

Year:

2018

Language:

english

File:

PDF, 3.49 MB

english, 2018

5

Development of 230–270 nm AlGaN-based deep-UV LEDs

Hideki Hirayama, Tohru Yatabe, Norimichi Noguchi, Norihiko Kamata

Journal:

Electronics and Communications in Japan

Year:

2010

Language:

english

File:

PDF, 2.63 MB

english, 2010

6

Hot carrier magnetophonon spectroscopy of semiconductors in high magnetic fields up to 40 T

Koji Yamada, Noboru Miura, Chihiro Hamaguchi, Norihiko Kamata

Journal:

Solid-State Electronics

Year:

1989

Language:

english

File:

PDF, 381 KB

english, 1989

7

Selection rules of inter-valley scattering in hot electron magnetophonon resonance for n-Si and n-Ge under high magnetic fields

Koji Yamada, Noboru Miura, Norihiko Kamata, Hideki Futagawa

Journal:

Physica B: Condensed Matter

Year:

1992

Language:

english

File:

PDF, 278 KB

english, 1992

8

Remarkable enhancement of 254-280 nm deep ultraviolet emission from AlGaN quantum wells by using high-quality AlN buffer on sapphire

Hideki Hirayama, Tohru Yatabe, Tomoaki Ohashi, Norihiko Kamata

Journal:

physica status solidi (c)

Year:

2008

Language:

english

File:

PDF, 289 KB

english, 2008

9

222 nm single-peaked deep-UV LED with thin AlGaN quantum well layers

Noguchi Norimichi, Hideki Hirayama, Tohru Yatabe, Norihiko Kamata

Journal:

physica status solidi (c)

Year:

2009

Language:

english

File:

PDF, 230 KB

english, 2009

10

Growth of flat p-GaN contact layer by pulse flow method for high light-extraction AlGaN deep-UV LEDs with Al-based electrode

Masahiro Akiba, Hideki Hirayama, Yuji Tomita, Yusuke Tsukada, Noritoshi Maeda, Norihiko Kamata

Journal:

physica status solidi (c)

Year:

2012

Language:

english

File:

PDF, 488 KB

english, 2012

11

Surface morphology of fluorene thin film fabricated by electrospray deposition technique using two organic solvents: Application for organic light-emitting diodes

Takeshi Fukuda, Hirotaka Asaki, Takashi Asano, Kenji Takagi, Zentaro Honda, Norihiko Kamata, Jungmyoung Ju, Yutaka Yamagata

Journal:

Thin Solid Films

Year:

2011

Language:

english

File:

PDF, 1.45 MB

english, 2011

12

231–261 nm AlGaN deep-ultraviolet light-emitting diodes fabricated on AlN multilayer buffers grown by ammonia pulse-flow method on sapphire

Hirayama, Hideki, Yatabe, Tohru, Noguchi, Norimichi, Ohashi, Tomoaki, Kamata, Norihiko

Journal:

Applied Physics Letters

Year:

2007

Language:

english

File:

PDF, 611 KB

english, 2007

13

High crystallinity parameter poly(3-hexylthiophene-2,5-diyl) thin film fabricated by the electrospray deposition method

Liao, Yingjie, Fukuda, Takeshi, Takagi, Kenji, Kamata, Norihiko, Fukuda, Fumihiko, Furukawa, Yukio

Journal:

Thin Solid Films

Year:

2014

Language:

english

File:

PDF, 772 KB

english, 2014

14

[IEEE 2010 IEEE 22nd International Semiconductor Laser Conference (ISLC) - Kyoto, Japan (2010.09.26-2010.09.30)] 22nd IEEE International Semiconductor Laser Conference - Marked efficiency enhancement of 250 nm-band AlGaN Deep-UV LEDs using multiquantum-barrier

Tsukada, Yusuke, Hirayama, Hideki, Akiba, Masahiro, Maeda, Noritoshi, Kamata, Norihiko

Year:

2010

Language:

english

File:

PDF, 709 KB

english, 2010

15

[IEEE 2010 IEEE 22nd International Semiconductor Laser Conference (ISLC) - Kyoto, Japan (2010.09.26-2010.09.30)] 22nd IEEE International Semiconductor Laser Conference - Development of AlGaN-based deep-UV LEDs using high-quality AlN on sapphire

Hirayama, Hideki, Tsukada, Yusuke, Akiba, Masahiro, Kamata, Norihiko

Year:

2010

Language:

english

File:

PDF, 604 KB

english, 2010

16

Marked Enhancement in the Efficiency of Deep-Ultraviolet AlGaN Light-Emitting Diodes by Using a Multiquantum-Barrier Electron Blocking Layer

Hirayama, Hideki, Tsukada, Yusuke, Maeda, Tetsutoshi, Kamata, Norihiko

Journal:

Applied Physics Express

Year:

2010

Language:

english

File:

PDF, 120 KB

english, 2010

17

Recent progress and future prospects of AlGaN-based high-efficiency deep-ultraviolet light-emitting diodes

Hirayama, Hideki, Maeda, Noritoshi, Fujikawa, Sachie, Toyoda, Shiro, Kamata, Norihiko

Journal:

Japanese Journal of Applied Physics

Year:

2014

Language:

english

File:

PDF, 657 KB

english, 2014

18

Preparation and Characterization of Water-Soluble Polysilanes Bearing Chiral Pendant Ammonium Moieties

Terunuma, Daiyo, Nagumo, Koji, Kamata, Norihiko, Matsuoka, Koji, Kuzuhara, Hiroyoshi

Journal:

Polymer Journal

Year:

2000

File:

PDF, 410 KB

2000

19

Surface magnetism of exfoliated α-Co hydroxide nanosheets

Honda, Zentaro, Anai, Katsuki, Hagiwara, Masayuki, Kida, Takanori, Okutani, Akira, Sakai, Masamichi, Fukuda, Takeshi, Kamata, Norihiko

Journal:

Journal of Physics and Chemistry of Solids

Year:

2017

Language:

english

File:

PDF, 1023 KB

english, 2017

20

The Role of the Effective Mass in the Hot-Electron Magnetophonon Resonance in n -Type Germanium

Futagawa, Hideki, Miura, Noboru, Yamada, Koji, Kamata, Norihiko, Kowata, Akira, Hamaguchi, Chihiro

Journal:

Journal of the Physical Society of Japan

Year:

1993

File:

PDF, 711 KB

1993

21

Milliwatt Power UV-A LEDs Developed by Using n-AlGaN Superlattices Buffer Layers Grown on AlN Templates

Matsumoto, Takuma, Khan, Muhammad Ajmal, Maeda, Noritoshi, Fujikawa, Sachie, Kamata, Norihiko, Hirayama, Hideki

Journal:

Journal of Physics D Applied Physics

Year:

2018

Language:

english

File:

PDF, 560 KB

english, 2018

22

Separation of non-radiative and below-gap emission lifetimes in a heavily Si-doped GaAs/AlGaAs quantum well

Norihiko Kamata, Koji Yamada, Hiroshi Tsuchiya, Hisashi Katahama, Yukio Shakuda, Takeo Suzuki

Journal:

Journal of Luminescence

Year:

1991

Language:

english

File:

PDF, 310 KB

english, 1991

23

Role of the dipole-quadrupole interaction in fluorescence of RE glasses estimated by Monte Carlo simulation

Kazuhiko Tonooka, Koji Yamada, Norihiko Kamata, Fumio Maruyama

Journal:

Journal of Luminescence

Year:

1994

Language:

english

File:

PDF, 298 KB

english, 1994

24

Japanese experience with clinical trials of fast neutrons

Hiroshi Tsunemoto, Tatsuo Arai, Shinroku Morita, Tatsuo Ishikawa, Yoshiro Aoki, Norihiko Takada, Shinetsu Kamata

Journal:

International Journal of Radiation Oncology*Biology*Physics

Year:

1982

Language:

english

File:

PDF, 453 KB

english, 1982

25

Improved stability of organic–inorganic composite emitting film with sol–gel glass encapsulated Eu-complex

Takeshi Fukuda, Shuhei Yamauchi, Zentaro Honda, Naoto Kijima, Norihiko Kamata

Journal:

Optical Materials

Year:

2009

Language:

english

File:

PDF, 494 KB

english, 2009

26

Wavelength conversion film with glass coated Eu chelate for enhanced silicon-photovoltaic cell performance

Takeshi Fukuda, Sayaka Kato, Eimo Kin, Kaoru Okaniwa, Hiroaki Morikawa, Zentaro Honda, Norihiko Kamata

Journal:

Optical Materials

Year:

2009

Language:

english

File:

PDF, 341 KB

english, 2009

27

Organic photoconductive device fabricated by electrospray deposition method

Takeshi Fukuda, Takashi Suzuki, Ryohei Kobayashi, Zentaro Honda, Norihiko Kamata

Journal:

Thin Solid Films

Year:

2009

Language:

english

File:

PDF, 391 KB

english, 2009

28

Efficient energy transfer from polysilane molecules and its application to electroluminescence

Norihiko Kamata, Daiyo Terunuma, Reiji Ishii, Hiroki Satoh, Satoshi Aihara, Yoshiyuki Yaoita, Shinji Tonsyo

Journal:

Journal of Organometallic Chemistry

Year:

2003

Language:

english

File:

PDF, 888 KB

english, 2003

29

Improvement of surface roughness and reduction of threading dislocation density in AlN/AlGaN templates on sapphire by employing trimethylaluminum pulsed supply growth

Norimichi Noguchi, Tomoaki Ohashi, Norihiko Kamata, Hideki Hirayama

Journal:

physica status solidi (c)

Year:

2008

Language:

english

File:

PDF, 366 KB

english, 2008

30

226–273 nm AlGaN deep-ultraviolet light-emitting diodes fabricated on multilayer AlN buffers on sapphire

Hideki Hirayama, Tohru Yatabe, Norimichi Noguchi, Tomoaki Ohashi, Norihiko Kamata

Journal:

physica status solidi (c)

Year:

2008

Language:

english

File:

PDF, 213 KB

english, 2008

31

Fabrication of a low threading dislocation density ELO-AlN template for application to deep-UV LEDs

Hideki Hirayama, Sachie Fujikawa, Jun Norimatsu, Takayoshi Takano, Kenji Tsubaki, Norihiko Kamata

Journal:

physica status solidi (c)

Year:

2009

Language:

english

File:

PDF, 643 KB

english, 2009

32

Ultrafast study of charge generation in silole:fluorene mixed film for color selective organic photoconductive device

Takeshi Fukuda, Ryohei Kobayashi, Zentaro Honda, Norihiko Kamata, Keita Mori, Yuu Suzuki, Ken Hatano, Akihiro Furube

Journal:

physica status solidi (c)

Year:

2011

Language:

english

File:

PDF, 239 KB

english, 2011

33

Electroluminescence of Poly Bis(p-propoxyphenyl)Silane from Double Layer Device with 8-Hydroxyquinoline Aluminum

Satoshi Aihara, Norihiko Kamata, Masato Umeda, Shin-Ichi Kanezaki, Koji Nagumo, Daiyo Terunuma, Koji Yamadam

Journal:

Year:

1999

Language:

english

File:

PDF, 342 KB

english, 1999

34

pH and concentration dependence of luminescent characteristics in glass-encapsulated Eu-complex

Eimo Kin, Takeshi Fukuda, Sayaka Kato, Zentaro Honda, Norihiko Kamata

Journal:

Journal of Sol-Gel Science and Technology

Year:

2009

Language:

english

File:

PDF, 240 KB

english, 2009

35

A non-linear analysis of energy transfer in highly Tb3+-doped glasses

Kazuhiko Tonooka, Norihiko Kamata, Koji Yamada, Koji Matsumoto, Fumio Maruyama

Journal:

Journal of Luminescence

Year:

1991

Language:

english

File:

PDF, 861 KB

english, 1991

36

Effect of back-transfer on the energy transfer in Tb3+-doped glasses

Kazuhiko Tonooka, Fumio Maruyama, Norihiko Kamata, Koji Yamada, Jun Ono

Journal:

Journal of Luminescence

Year:

1994

Language:

english

File:

PDF, 650 KB

english, 1994

37

Stability of sol–gel derived glass coated Eu complex using deuterated methanol

Takeshi Fukuda, Shuhei Yamauchi, Zentaro Honda, Norihiko Kamata, Naoto Kijima

Journal:

physica status solidi (RRL) - Rapid Research Letters

Year:

2009

Language:

english

File:

PDF, 481 KB

english, 2009

38

Bulk heterojunction organic photovoltaic cell fabricated by the electrospray deposition method using mixed organic solvent

Takeshi Fukuda, Kenji Takagi, Takashi Asano, Zentaro Honda, Norihiko Kamata, Keiji Ueno, Hajime Shirai, Jungmyoung Ju, Yutaka Yamagata, Yusuke Tajima

Journal:

physica status solidi (RRL) - Rapid Research Letters

Year:

2011

Language:

english

File:

PDF, 388 KB

english, 2011

39

Cover Picture: Bulk heterojunction organic photovoltaic cell fabricated by the electrospray deposition method using mixed organic solvent (Phys. Status Solidi RRL 7/2011)

Takeshi Fukuda, Kenji Takagi, Takashi Asano, Zentaro Honda, Norihiko Kamata, Keiji Ueno, Hajime Shirai, Jungmyoung Ju, Yutaka Yamagata, Yusuke Tajima

Journal:

physica status solidi (RRL) - Rapid Research Letters

Year:

2011

File:

PDF, 390 KB

2011

40

Magneto-transport study of 5d-4f spin exchange interaction in EuSe

Koji Yamada, Norihiko Kamata

Journal:

Journal of Magnetism and Magnetic Materials

Year:

1992

Language:

english

File:

PDF, 172 KB

english, 1992

41

Theory of donor fluorescence governed by discrete energy transfers between rare-earth ions in glasses

Tonooka, Kazuhiko, Yamada, Koji, Kato, Yousuke, Hayakawa, Tomokazu, Kamata, Norihiko

Journal:

Journal of the Optical Society of America B

Year:

1997

Language:

english

File:

PDF, 299 KB

english, 1997

42

Improved optical-to-electrical conversion efficiency by doping silole derivative with low ionization potential

Takeshi Fukuda, Sho Kimura, Zentaro Honda, Norihiko Kamata, Keita Mori, Ken Hatano

Journal:

physica status solidi (a)

Year:

2012

Language:

english

File:

PDF, 520 KB

english, 2012

43

An estimation of the distribution functions of doped Tb3+ and Nd3+ in glasses by fluorescence measurements

Kazuhiko Tonooka, Norihiko Kamata, Koji Yamada, Koji Matsumoto, Fumio Maruyama

Journal:

Journal of Non-Crystalline Solids

Year:

1992

Language:

english

File:

PDF, 448 KB

english, 1992

44

Photodegradation characteristics of sol–gel-derived glass-coated Eu-complex fabricated by solvothermal process using several silane alkoxides and solvents

Takeshi Fukuda, Sayaka Kato, Shinnosuke Akiyama, Zentaro Honda, Norihiko Kamata

Journal:

Optical Materials

Year:

2012

Language:

english

File:

PDF, 922 KB

english, 2012

45

Sintering Condition and Optical Properties of Zn<sub>3</sub>V<sub>2</sub>O<sub>8</sub> Phosphor

Li, Tingting, Luo, Jiaolian, Honda, Zentaro, Fukuda, Takeshi, Kamata, Norihiko

Journal:

Advances in Materials Physics and Chemistry

Year:

2012

Language:

english

File:

PDF, 426 KB

english, 2012

46

Diameter control of ultrathin zinc oxide nanofibers synthesized by electrospinning

Liao, Yingjie, Fukuda, Takeshi, Kamata, Norihiko, Tokunaga, Makoto

Journal:

Nanoscale Research Letters

Year:

2014

Language:

english

File:

PDF, 835 KB

english, 2014

47

Effects of Substituents on the Size of Water-Dispersible Phthalocyanine Colloids Synthesized by Reprecipitation

Ishimaru, Yoshihiro, Iseya, Takahiro, Akiyama, Shinnosuke, Kamata, Norihiko, Fukuda, Takeshi

Journal:

Molecular Crystals and Liquid Crystals

Year:

2014

Language:

english

File:

PDF, 686 KB

english, 2014

48

Doping Effect of Silole Derivative in Coumarin 30 Photoconductive Film

Sakai, Toshikatsu, Seo, Hokuto, Aihara, Satoshi, Kubota, Misao, Egami, Norifumi, Mori, Keita, Fukuda, Takeshi, Hatano, Ken, Kamata, Norihiko

Journal:

Molecular Crystals and Liquid Crystals

Year:

2012

Language:

english

File:

PDF, 669 KB

english, 2012

49

Read-Out Frequency Response of Solution-Processed Organic Photoconductive Devices

Fukuda, Takeshi, Komoriya, Mitsuo, Mori, Ryotaro, Honda, Zentaro, Takahashi, Khorou, Kamata, Norihiko

Journal:

Molecular Crystals and Liquid Crystals

Year:

2009

Language:

english

File:

PDF, 602 KB

english, 2009

50

Blue-Sensitive Organic Photoconductive Device with MDMO-PPV Doped F8BT Layer

Fukuda, Takeshi, Kimura, Sho, Honda, Zentaro, Kamata, Norihiko

Journal:

Molecular Crystals and Liquid Crystals

Year:

2011

Language:

english

File:

PDF, 574 KB

english, 2011