学会発表

CONFERENCE PRESENTATIONS

学生学会発表

40.
超低屈折率多孔質正孔輸送層を用いた高効率有機EL素子
有機EL討論会第35回例会　S2-3　(2022/11/24)
青木雅治、熊木治郎、日下部悠、梶弘典、横山大輔
39.
超低屈折率多孔質正孔輸送層による有機EL光取り出し効率の向上
2022年春季応用物理学会　22p-E206-10　(2022/3/22)
青木雅治、熊木治郎、横山大輔
38.
重水素化材料を用いた非晶質有機半導体膜中の官能基配向評価
有機EL討論会第33回例会　S2-2　(2021/11/19)
鮏川慶仁、八木勇路、北原秀良、望月俊二、横山大輔
37.
Effects of conformer distribution on properties of amorphous organic semiconductor films
SmaSys2020 (The 8th International Conference on Smart Systems Engineering 2020)
CL26　(2020/10/30)
Yoshihito Sukegawa, Kaito Sato, Wataru Fujiwara, Hiroshi Katagiri, Daisuke Yokoyama
36.
有機EL 光取り出し効率向上のための有機膜光学特性の設計指針
2020年春季応用物理学会　12p-A409-9　(2020/3/12)
鹿内浩紀、横山大輔
35.
フッ素樹脂を有する超低屈折率正孔輸送層の導電機構解明
有機EL討論会第29回例会　S7-1　(2019/11/21)
佐々木樹、鈴木泰隆、阿部岳文、鶴岡薫、桑名保宏、大内靖弘、出村誠也、山口雄生、石井久夫、野口裕、横山大輔
34.
有機EL蒸着膜積層構造の熱安定性とその材料依存性
有機EL討論会第29回例会　S2-2　(2019/11/21)
塩本右京、酒井義也、鮏川慶仁、横山大輔
33.
有機EL材料の配座構造分布と高次構造・膜物性
有機EL討論会第29回例会　S2-1　(2019/11/21)
鮏川慶仁、佐藤快度、藤原渉、片桐洋史、横山大輔
32.
剛直性高分子有機EL薄膜の膜物性の分子量依存性
2019年秋季応用物理学会　18p-E310-12　(2019/9/18)
石井拓海、佐藤友基、横山大輔
31.
フッ素系樹脂を有する超低屈折率正孔輸送層における導電機構の解明
2019年秋季応用物理学会　18p-E310-6　(2019/9/18)
佐々木樹、鈴木泰隆、阿部岳文、鶴岡薫、桑名保宏、大内靖弘、出村誠也、山口雄生、石井久夫、野口裕、横山大輔
30.
High-efficiency organic light emitting diodes with a super-low-index layer
1st IPOMY (The 1st International Conference of Polymeric and Organic Materials in Yamagata University)
PS76　(2019/1/25)
Tatsuki Sasaki, Yasutaka Suzuki, Takefumi Abe, Kaori Tsuruoka, Yasuhiro Kuwana, Yutaka Noguchi, Daisuke Yokoyama
29.
High-efficiency organic light emitting diodes with a super-low-index organic layer
SmaSys2018 (The 6th International Conference on Smart Systems Engineering 2018)
CL16　(2018/10/12)
Tatsuki Sasaki, Yasutaka Suzuki, Takefumi Abe, Kaori Tsuruoka, Yasuhiro Kuwana, Yutaka Noguchi, Daisuke Yokoyama
28.
Deposition condition dependence and formation dynamics of molecular orientation of OLED materials
EL2018　P-6　(2018/9/12)
Yoshihito Sukegawa, Mizuka Fukuda, Yoshiya Sakai, Daisuke Yokoyama
27.
High-efficiency OLEDs with a super-low-index hole transport layer
EL2018　O-2　(2018/9/11)
Tatsuki Sasaki, Yasutaka Suzuki, Takefumi Abe, Kaori Tsuruoka, Yasuhiro Kuwana, Yutaka Noguchi, Daisuke Yokoyama
26.
有機EL蒸着膜の熱安定性に対する隣接層の影響
有機EL討論会第26回例会　S6-1　(2018/6/22)
塩本右京、酒井義也、横山大輔
25.
高反射率導電性有機多層膜ミラーの開発
2018年春季応用物理学会　20p-A204-3　(2018/3/20)
沼田健汰、會田航、相田峻佑、佐々木樹、横山大輔
24.
有機EL蒸着膜の熱安定性に対する隣接有機膜の効果
2018年春季応用物理学会　17a-D102-8　(2018/3/17)
塩本右京、酒井義也、横山大輔
23.
有機非晶質蒸着膜の局所的な熱安定性とその界面依存性
有機EL討論会第25回例会　S7-3　(2017/11/16)
酒井義也、塩本右京、横山大輔
22.
超低屈折率正孔輸送層による高効率有機ELの光取り出し効率向上
有機EL討論会第25回例会　S5-4　(2017/11/16)
佐々木樹、鈴木泰隆、阿部岳文、鶴岡薫、桑名保宏、野口裕、横山大輔
21.
屈曲性･剛直性高分子有機EL 材料の分子配向分析
有機EL討論会第25回例会　S3-4　(2017/11/16)
佐藤友基、酒井義也、横山大輔
20.
有機EL材料の分子配向の蒸着条件依存性と形成ダイナミクス
有機EL討論会第25回例会　S3-2　(2017/11/16)
鮏川慶仁、福田瑞香、酒井義也、横山大輔
19.
Molecular orientation near the surfaces of underlying layers in amorphous vacuum-deposited OLED films
SmaSys2017 (The 5th International Conference on Smart Systems Engineering 2017)
CL-21　(2017/10/13)
Tatsuki Sasaki, Katsuhiro Narisawa, Daisuke Yokoyama
18.
Simple estimation of functional group orientation of OLED materials by IR spectroscopy
SmaSys 2017 (The 5th International Conference on Smart Systems Engineering 2017)
CL-20　(2017/10/13)
Yoshihito Sukegawa, Mizuka Fukuda, Yoshiya Sakai, Daisuke Yokoyama
17.
有機EL材料の分子配向の蒸着速度依存性とダイナミクス
2017年秋季応用物理学会　6p-A203-6　(2017/9/6)
鮏川慶仁、福田瑞香、酒井義也、横山大輔
16.
超低屈折率有機正孔輸送層による有機EL光取り出し効率の向上
2017年秋季応用物理学会　6p-A203-1　(2017/9/6)
佐々木樹、鈴木泰隆、阿部岳文、鶴岡薫、桑名保宏、野口裕、横山大輔
15.
Direct estimation of molecular orientation in OLED amorphous films
SmaSys 2016 (The 4th International Conference on Smart Systems Engineering 2016)
CL-1　(2016/10/13)
Yoshiya Sakai, Daisuke Yokoyama
14.
赤外吸収測定による有機EL薄膜中の官能基配向簡易評価とin situ分析
2016年秋季応用物理学会　16p-P7-3　(2016/9/16)
酒井義也、横山大輔
13.
非晶質膜の吸収測定による分子配向簡易評価法とその拡張
有機EL討論会第22回例会　S1-1　(2016/6/23)
酒井義也、横山大輔
12.
有機EL非晶質膜中の分子配向の成膜条件依存性とその直接的簡易評価
2016年春季応用物理学会　20p-W521-1　(2016/3/20)
酒井義也、福田瑞香、柴田真希、横山大輔
（第39回応用物理学会講演奨励賞受賞記念講演）
11.
分子配向の直接的簡易評価法の開発と成膜条件依存性の分析
有機EL討論会第21回例会　S2-5　(2015/11/13)
酒井義也、柴田真希、横山大輔
（有機EL討論会第21回例会講演奨励賞受賞）
10.
有機半導体材料とエレクトレット材料の混合により作製された超低屈折率電荷輸送層
2015年秋季応用物理学会　14p-2A-7　(2015/9/14)
鈴木泰隆、會田航、横山大輔
9.
SAM上の非晶質有機材料の特異な島状構造とその形成機構
2015年秋季応用物理学会　14p-1E-4　(2015/9/14)
成澤克拓、横山大輔
8.
有機ELスピンコート膜中の分子配向の成膜条件依存性とその直接評価
2015年秋季応用物理学会　13a-1G-3　(2015/9/13)
酒井義也、柴田真希、横山大輔
（第39回応用物理学会講演奨励賞受賞）
7.
超低屈折率正孔輸送層の開発とその有機EL応用
有機EL討論会第20回例会　S6-2　(2015/6/18)
鈴木泰隆、會田航、柴田真希、横山大輔
6.
スピンコート成膜条件による膜物性への影響
有機EL討論会第19回例会　S6-3　(2014/11/28)
柴田真希、横山大輔
5.
成膜法による有機EL材料の膜物性の違い
2014年秋季応用物理学会　18p-A4-3　(2014/9/18)
柴田真希、横山大輔
4.
真空蒸着膜とスピンコート膜の密度と分子配向
有機EL討論会第18回例会　S3-4　(2014/7/17)
柴田真希、横山大輔
（有機EL討論会第18回例会講演奨励賞受賞）
3.
有機EL材料の真空蒸着膜とスピンコート膜の絶対密度評価
2014年春季応用物理学会　19p-E3-6　(2014/3/19)
柴田真希、横山大輔
2.
非晶質有機半導体蒸着膜の密度分析と充填係数評価
有機EL討論会第17回例会　S5-1　(2013/11/19)
柴田真希、鈴木早紀、村岡宏樹、小川智、横山大輔
1.
X線反射率測定による非晶質有機半導体蒸着膜の質量密度分析と充填係数評価
2013年秋季応用物理学会　18a-C4-5　(2013/9/18)
柴田真希、鈴木早紀、村岡宏樹、小川智、横山大輔

国際学会（口頭発表）

29.
[Invited]
Super-low-refractive-index hole transport layers with perfluororesin for high-outcoupling-efficiency OLEDs
IDW '22 (The 29th International Display Workshops)
(15 Dec 2022, Fukuoka, Japan and online)
Daisuke Yokoyama, Tatsuki Sasaki, Yasutaka Suzuki, Takefumi Abe, Kaori Tsuruoka, Tatsuya Miyajima, Toshifumi Kakiuchi, Chiho Morita, Masaharu Aoki, Yasuhiro Ouchi, Wataru Aita, Yasuhiro Kuwana, Yutaka Noguchi
28.
[Invited]
Outcoupling efficiency enhanced by organic materials inside OLEDs
A-COE2020 (The 12th Asian Conference on Organic Electronics)
(9 Nov 2020, Busan, Republic of Korea and online)
Daisuke Yokoyama
27.
[Invited]
Outcoupling enhancement by organic materials inside OLEDs: Control of molecular orientation and refractive index
IDW '18 (The 25th International Display Workshops)
(12 Dec 2018, Nagoya, Japan)
Daisuke Yokoyama
26.
[Invited]
Understanding of the nature of amorphous organic semiconductor films for OLEDs
EL2018
(12 Sep 2018, Tokyo, Japan)
Daisuke Yokoyama
25.
[Invited]
Effects of interface structures on thermal stability of OLED films
IMID2018 (The 18th International Meeting on Information Display)
(29 Aug 2018, Busan, Republic of Korea)
Daisuke Yokoyama, Ukyo Shiomoto, Yoshiya Sakai
24.
[Invited]
Thermal stability of amorphous films in OLEDs
IMID2017 (The 17th International Meeting on Information Display)
(30 Aug 2017, Busan, Republic of Korea)
Daisuke Yokoyama
23.
[Invited]
Molecular orientation in OLEDs: Order in disorder in amorphous organic films
ISOME2016 (9th International Symposium on Organic Molecular Electronics)
(19 May 2016, Niigata, Japan)
Daisuke Yokoyama
22.
[Invited]
Recent progress on the understanding of molecular states in OLED films: molecular orientation, packing, and mixing
IDW '15 (The 22nd International Display Workshops)
(9 Dec 2015, Otsu, Japan)
Daisuke Yokoyama
21.
[Invited]
Super-low-index hole transport layers and their applications for high outcoupling of OLEDs
IMID2015 (The 15th International Meeting on Information Display)
(21 Aug 2015, Daegu, Republic of Korea)
Daisuke Yokoyama, Yasutaka Suzuki, Wataru Aita
20.
[Invited]
Advantages and disadvantages of vacuum- and solution-processed OLED films: Differences in molecular orientation, thermal stability, and interfacial mixing
SPIE Optics+Photonics 2015
(9 Aug 2015, San Diego, US)
Daisuke Yokoyama, Maki Shibata, Yoshiya Sakai
19.
Differences in molecular orientation and density of vacuum- and solution-processed OLED films and their effects on light extraction and thermal stability
2015 MRS Spring Meeting
(10 Apr 2015, San Francisco, US)
Daisuke Yokoyama, Maki Shibata
18.
[Invited]
Differences between vacuum-deposited and spin-coated amorphous films of OLED materials
SPIE Optics+Photonics 2014
(17 Aug 2014, San Diego, US)
Daisuke Yokoyama, Maki Shibata
17.
[Invited]
Molecular states in amorphous organic semiconductor films used in OLEDs
EuroDisplay2013 (33rd International Display Research Conference)
(17 Sep 2013, London, UK)
Daisuke Yokoyama
16.
[Invited]
Fundamental properties of vacuum-deposited amorphous organic semiconductor films: density, molecular orientation, and refractive index
SPIE Optics+Photonics 2013
(25 Aug 2013, San Diego, US)
Daisuke Yokoyama
15.
[Invited]
Optical anisotropy and molecular orientation in amorphous organic semiconductor films
ICSE-VI (The 6th International Conference on Spectroscopic Ellipsometry)
(29 May 2013, Kyoto, Japan)
Daisuke Yokoyama
14.
[Invited]
Control of molecular orientation and refractive index - New degrees of freedom for advanced optical design of OLEDs and OPVs -
A-COE2012 (The 4th Asian Conference on Organic Electronics)
(20 Dec 2012, Yonezawa, Japan)
Daisuke Yokoyama, Ziruo Hong, Junji Kido
13.
[Invited]
IR analysis of functional group orientation in OLED amorphous films
IMID2012 (The 12th International Meeting on Information Display)
(30 Aug 2012, Daegu, Republic of Korea)
Daisuke Yokoyama, Toshiya Otani, Koichi Tsutsumi, Michio Suzuki, Norimasa Yokoyama, Masaya Miyamura, Yukio Furukawa
12.
Molecular orientation in OLEDs (Extra talk)
SPIE Optics+Photonics 2012
(13 Aug 2012, San Diego, US)
Daisuke Yokoyama
11.
[Invited]
Functional group orientation in amorphous films of OLED materials
SPIE Optics+Photonics 2012
(12 Aug 2012, San Diego, US)
Daisuke Yokoyama, Koichi Tsutsumi, Michio Suzuki, Norimasa Yokoyama, Masaya Miyamura, Yukio Furukawa
10.
[Invited]
Molecular orientation in OLEDs
2012 MRS Spring Meeting
(10 Apr 2012, San Francisco, US)
Daisuke Yokoyama
9.
[Invited]
Molecular orientation in organic light-emitting diodes
IMID2011 (The 11th International Meeting on Information Display)
(12 Oct 2011, Seoul, Republic of Korea)
Daisuke Yokoyama
8.
Molecular orientation in OLEDs
SPIE Optics+Photonics 2011
(22 August 2011, San Diego, US)
Daisuke Yokoyama, Chihaya Adachi, Junji Kido, Yukio Furukawa, Jongwook Park
7.
Molecular orientation in OLEDs
M&BE6 (6th International Conference on Molecular Electronics and Bioelectronics)
(18 March 2011, Sendai, Japan)
Daisuke Yokoyama, Chihaya Adachi, Junji Kido
6.
Molecular stacking induced by intermolecular C-H...N hydrogen bonds leading to high carrier mobility for OLEDs
A-COE2010 (Asian Conference on Organic Electronics 2010)
(5 November 2010, Seoul, Korea)
Daisuke Yokoyama, Hisahiro Sasabe, Yukio Furukawa, Chihaya Adachi, Junji Kido
5.
Molecular stacking by intermolecular hydrogen bonds leading to high mobility for OLEDs
ICEL2010 (8th International Conference on Electroluminescence & Organic Optoelectronics)
(20 October 2010, Michigan, US)
Daisuke Yokoyama, Hisahiro Sasabe, Daisaku Tanaka, Takayuki Chiba, Yukio Furukawa, Chihaya Adachi, Junji Kido
4.
Effects of molecular orientation on device characteristics of OLEDs
ICSM2010 (International Conference on Science and Technology of Synthetic Metals 2010)
(5 July 2010, Kyoto, Japan)
Daisuke Yokoyama, Chihaya Adachi, Junji Kido
3.
Horizontal molecular orientation in vacuum-deposited organic amorphous films
1st A-COE (First Asian Conference on Organic Electronics)
(3 September 2009, Fukuoka, Japan)
Daisuke Yokoyama, Akio Sakaguchi, Michio Suzuki, Chihaya Adachi
2.
Lateral molecular orientation in organic amorphous films and its effect on cutoff emissions from edges
SPIE Optics+Photonics 2008
(12 August 2008, San Diego, US)
Daisuke Yokoyama, Akio Sakaguchi, Michio Suzuki, Chihaya Adachi
1.
Characteristics of edge emission at cutoff wavelength from edge of electrically pumped organic light-emitting diodes
SPIE Europe Photonics Europe 2008
(7 April 2008, Strasbourg, France)
Daisuke Yokoyama, Hajime Nakanotani, Yousuke Setoguchi, Masato Moriwake, Dai Ohnishi, Masayuki Yahiro, Chihaya Adachi