Organic Light Emitting Diodes (OLED),
Organic Electroluminescent Devices (Organic EL):
2012
1) "Three-carbazole-armed host materials with various cores for RGB phosphorescent organic light-emitting diodes", S.-J. Su, C. Cai, and J. Kido, J. Mater. Chem., 22, 3447?3456 (2012).

2) "A m-terphenyl-modified sulfone derivative as a host material for high-efficiency blue and green phosphorescent OLEDs", H. Sasabe, Y. Seino, M. Kimura, and J. Kido, Chem. Mater. 24, 1404?1406 (2012).

3) "Optimizing the charge balance of fluorescent organic light-emitting devices to achieve high external quantum efficiency beyond the conventional upper limit", Y.-J. Pu, G. Nakata, F. Sato, H. Sasabe, D. Yokoyama, and J. Kido, Adv. Mater., 24, 1765?1770 (2012).

4) "3,3'-Bicarbazole-based host materials for high-efficiency blue phosphorescent OLEDs with extremely low driving voltage", H. Sasabe, N. Toyota, H. Nakanishi, T. Ishizaka, Y.-J. Pu, and J. Kido, Adv. Mater., 24, 3212-3217 (2012).

2011
1) "Influence of substituted pyridine rings on physical properties and electron mobilities of 2-methylpyrimidine skeleton-based electron-transporters", H. Sasabe, D. Tanaka, D. Yokoyama, T. Chiba, Y.-J. Pu, K. Nakayama, M. Yokoyama, and J. Kido, Adv. Funct. Mater., 21, 336?342 (2011).

2) "An α-carboline-containing host material for high-efficiency blue and green phosphorescent OLEDs", T. Motoyama, H. Sasabe, Y. Seino, J. Takamatsu, and J. Kido, Chem. Lett., 40, 306?308 (2011).

3) "Molecular stacking by intermolecular C?H???N hydrogen bonds leading to high carrier mobility in vacuum-deposited organic films", D. Yokoyama, H. Sasabe, H. Furukawa, C. Adachi, and J. Kido, Adv. Funct. Mater., 21, 1375-1382 (2011).

4) "Ultra-high efficiency by multiple emission from stacked organic light-emitting devices", T. Chiba, Y.-J. Pu, R. Miyazaki, K. Nakayama, H. Sasabe, and J. Kido, Org. Electr., 12, 710?715 (2011).

5) "High-efficiency red, green and blue phosphorescent homojunction organic light-emitting diodes based on bipolar host materials", C. Cai, S.-J. Su, T. Chiba, H. Sasabe, Y.-J. Pu, K. Nakayama, and J. Kido, Org. Electr., 12, 843?850 (2011).

6) "Alkoxyphenyl group-containing starburst host materials for efficient blue and green organic light-emitting devices", H. Sasabe, M. Ishiba, Y.-J. Pu, and J. Kido, IEICE Trans. Electron., E94-C, 1848?1850 (2011).

7) "Efficient low-driving-voltage blue phosphorescent homojunction organic light-emitting devices", C. Cai, S.-J. Su, T. Chiba, H. Sasabe, Y.-J. Pu, K. Nakayama, and J. Kido, Jpn. J. Appl. Phys., 50, 040204 (2011).

8) "9,10-Bis(bipyridyl, pyridylphenyl, phenylpyridyl, and biphenyl)anthracenes combining high electron-transport and injection, efficiency, and stability in fluorescent organic light emitting devices", J.-J. Oh, Y.-J. Pu, H. Sasabe, K. Nakayama, and J. Kido, Chem. Lett., 40, 1092?1094 (2011).

9) "fac-Tris(2-phenylpyridine)iridium (III)s, covalently surrounded by six bulky host dendrons, for a highly efficient solution-processed organic light emitting device", Y.-J. Pu, N. Iguchi, N. Aizawa, H. Sasabe, K. Nakayama, and J. Kido, Org. Electr., 12, 2103?2110 (2011).

10) "Dual efficiency enhancement by delayed fluorescence and dipole orientation in high-efficiency fluorescent organic light-emitting diodes", D. Yokoyama, Y. Park, B. Kim, S. Kim, Y.-J. Pu, J. Kido, and J. Park, Appl. Phys. Lett., 99, 123303 (2011).

11) "Surface-light-emitting transistors based on vertical-type metal-base organic transistors", K. Nakayama, Y.-J. Pu, and J. Kido, J. Soc. Inf. Disp., 19, 602?607 (2011).

12) "RGB phosphorescent organic light-emitting diodes by using host materials with heterocyclic cores: effect of nitrogen atom orientations", S.-J. Su, C. Cai, and J. Kido, Chem. Mater., 23, 274?284 (2011).

13) "Hole mobility measurement of 4,4'-Bis[N-(1-naphthyl)-N-phenylamino]-biphenyl by dark injection method", T. Chiba, K. Nakayama, Y.-J. Pu, T. Nishina, M. Yokoyama, and J. Kido, Chem. Phys. Lett., 502, 118?120 (2011).

14) "Luminescence characteristics for blends of Iridium complexes with liquid crystalline ligands", T. Sato, T. Kageyama, H. Awano, O. Haba, T. Takahashi, K. Yonetake, and J. Kido, Kobunshi Ronbunshu, 68, 115-121 (2011). (in Japanese)

2010
1) "Highly efficient green phosphorescent OLED based on pyridine-containing starburst electron-transporting material", Y.-J. Li, H. Sasabe, S.-J. Su, D. Tanaka, T. Takeda, Y.-J. Pu, and J. Kido, Chem. Lett., 39, 140?141 (2010).

2) "Electron injection and transport properties of phenazine compounds with fused rings", K. Nakayama, Y. Hashimoto, H. Sasabe, Y.-J. Pu, and J. Kido, Jpn. J. Appl. Phys., 49, 01AB11-1?01AB11-3 (2010).

3) "Tuning energy levels of electron-transport materials by nitrogen orientation for electrophosphorescent devices with an ideal operating voltage", S.-J. Su, H. Sasabe, Y.-J. Pu, K. Nakayama, and J. Kido, Adv. Mater., 22, 3311?3316 (2010).

4) "High-efficiency blue and white organic light-emitting devices incorporating a blue iridium carbene complex", H. Sasabe, J. Takamatsu, T. Motoyama, S. Watanabe, G. Wagenblast, N. Langer, O. Molt, E. Fuchs, C. Lennartz, and J. Kido, Adv. Mater., 22, 5003?5007 (2010).

5) "Electron transporting materials containing pyridylphenyl groups and their application to organic light-emitting devices", T. Oyama, Y.-J. Pu, H. Sasabe, K. Nakayama, and J. Kido, J. Photopoly. Sci. Tech., 23, 333?336 (2010).

6) "Bifluorene compounds containing carbazole and/or diphenylamine groups and their bipolar charge transport properties in organic light emitting devices", K. Noine, Y.-J. Pu, K. Nakayama, Y.-J. Pu, and J. Kido, Org. Electr., 11, 717?723 (2010).

7) "Arylamino-9,10-diphenylanthracenes for organic light emitting devices", Y.-J. Pu, A. Kamiya, K. Nakayama, and J. Kido, Org. Electr., 11, 479?485 (2010).

8) "LiF/Al base electrodes in vertical metal-base organic transistors for heat-treatment-free process", F. Suzuki, K. Nakayama, Y.-J. Pu, M. Yokoyama, and J. Kido, J. J. Appl. Phys., 49, 030202 (2010).

2009
1) "m-Terphenyl-modified carbazole host material for highly efficient blue and green PHOLEDs", H. Sasabe, Y.-J. Pu, K. Nakayama, and J. Kido, Chem. Commun., 2009, 6655?6657 (2009).

2) "Phenanthroline derivatives for electron-transport layer in organic light-emitting devices", Y.-J. Li, H. Sasabe, S.-J. Su, D. Tanaka, T. Takeda, Y.-J. Pu, and J. Kido, Chem. Lett., 38, 712?713 (2009).

3) "Dipyrenylpyridines for electron-transporting materials in organic light emitting devices and their structural effect on electron injection from LiF/Al cathode", Y.-J. Pu, M. Yoshizaki, T. Akiniwa, K. Nakayama, J. Kido, Org. Electr., 10, 877?882 (2009).

4) "Synthesis, photoluminescence and electroluminescence properties of iridium complexes with bulky carbazole dendrons", N. Iguchi, Y.-J. Pu, K. Nakayama, M. Yokoyama, and J. Kido, Org. Electr., 10, 465?472 (2009).

5) "Structure-Property Relationship of Pyridine-Containing Triphenyl Benzene Electron-Transport Materials for Highly Efficient Blue Phosphorescent OLEDs", S.-J. Su, Y. Takahashi, T. Takeda, and J. Kido, Adv. Mater., 19, 1260?1267 (2009).

6) "Lithium phenolate complexes for an electron injection layer in organic light-emitting diodes", Y.-J. Pu, M. Miayamoto, K. Nakayama, T. Oyama, M. Yokoyama, and J. Kido, Org. Electr., 10, 228?232 (2009).

7) "Nearly 100% internal quantum efficiency in an organic blue-light electrophosphorescent device using a weak electron transporting material", L. Xiao, S.-J. Su, Y. Agata, H. Lan, and J. Kido, Adv. Mater., 19, 1271 (2009).

8) "Highly efficient organic light-emitting devices based on a new yellow fluorescent dopant", J.-J. Oh, Y.-J. Pu, K. Nakayama, and J. Kido, J. Photopoly. Sci. Tech., 22, 521?523 (2009).