CONFERENCES

Presentations in international conferences (oral)

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
(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
(25 Aug 2013, San Diego, US)
Daisuke Yokoyama
15.
[Invited]
Optical anisotropy and molecular orientation in amorphous organic semiconductor films
The 6th International Conference on Spectroscopic Ellipsometry (ICSE-VI)
(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 -
The 4th Asian Conference on Organic Electronics (A-COE2012)
(20 Dec 2012, Yonezawa, Japan)
Daisuke Yokoyama, Ziruo Hong, Junji Kido
13.
[Invited]
IR analysis of functional group orientation in OLED amorphous films
The 12th International Meeting on Information Display (IMID2012)
(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
(13 August 2012, San Diego, US)
Daisuke Yokoyama
11.
[Invited]
Functional group orientation in amorphous films of OLED materials
SPIE Optics+Photonics
(12 August 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
The 11th International Meeting on Information Display (IMID2011)
(12 Oct 2011, Seoul, Republic of Korea)
Daisuke Yokoyama
8.
Molecular orientation in OLEDs
SPIE Optics+Photonics
(22 August 2011, San Diego, US)
Daisuke Yokoyama, Chihaya Adachi, Junji Kido, Yukio Furukawa, Jongwook Park
7.
Molecular orientation in OLEDs
6th International Conference on Molecular Electronics and Bioelectronics (M&BE6)
(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
Asian Conference on Organic Electronics 2010 (A-COE2010)
(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
8th International Conference on Electroluminescence & Organic Optoelectronics (ICEL2010)
(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
International Conference on Science and Technology of Synthetic Metals 2010 (ICSM2010)
(5 July 2010, Kyoto, Japan)
Daisuke Yokoyama, Chihaya Adachi, Junji Kido
3.
Horizontal molecular orientation in vacuum-deposited organic amorphous films
First Asian Conference on Organic Electronics (1st A-COE)
(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 (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 (7 April 2008, Strasbourg, France)
Daisuke Yokoyama, Hajime Nakanotani, Yousuke Setoguchi, Masato Moriwake, Dai Ohnishi, Masayuki Yahiro, Chihaya Adachi