2024

  1. R. Miranti, R. Komatsu, K. Enomoto, D. Inoue, Y.-J. Pu
    "Symmetry-Broken Electronic State of CsPbBr3 Cubic Perovskite Nanocrystals"
    Journal of Physical Chemistry Letters, 15, 10009-10017 (2024).

  2. K. Enomoto, R. Miranti, J. Liu, R. Okano, D. Inoue, D. Kim, Y.-J. Pu
    "Anisotropic Electronic Coupling in Three-Dimensional Assembly of CsPbBr3 Quantum Dots"
    Chemical Science, 15, 13049-13057 (2024).

2023
  1. Y.-J. Pu, D. Valverde, J.-C. Sancho-García, Y. Olivier
    "Computational Design of Multiple Resonance–Type BN Molecules for Inverted Singlet and Triplet Excited States"
    Journal of Physical Chemistry A, 127, 10189−10196 (2023).

  2. T. Gao, J. Liu, G. Liu, Y. Qin, S. Shen, H. Gao, X. Dong, P. Wang, Y.-J. Pu, Y. Wang
    "Multiple charge-transfer excited state induced efficient and stable thermally activated delayed fluorescence"
    Journal of Materials Chemistry C, 11, 4210-4218 (2023).

  3. T. Wang, Z.-H. Chen, J.-W. Qiao, W. Qin, J.-Q. Liu, X.-Z. Wang, Y.-J. Pu, H. Yin, X.-T. Hao
    "Correlating Charge Transfer Dynamics with Interfacial Trap States in High-Efficiency Organic Solar Cells"
    ACS Applied Materials & Interfaces, 2023, 15, 12109 (2023).

2022
  1. N. Aizawa, Y.-J. Pu, Y. Harabuchi, A. Nihonyanagi, R. Ibuka, H. Inuzuka, B. Dhara, Y. Koyama, K. Nakayama, S. Maeda, F. Araoka, D. Miyajima
    "Delayed fluorescence from inverted singlet and triplet excited states"
    Nature, 609, 502-506 (2022). Featured in News & Views, Nature, 2022, 609, 473-475; ACS C&EN, Sep 19, 2022, 7.; ACS C&EN, Dec 19, 2022, 33.

  2. G. Liu, Z. Li, X. Hu, Y. Qin, C.-S. Lee, D. Chen, L. Wang, J. Liu, P. Wang, Y.-J. Pu, Y. Wang
    "Efficient and stable one-micrometre-thick organic light-emitting diodes"
    Nature Photonics, 16, 876-883 (2022).

  3. K. Enomoto, K. Takeda, N. Iwata, K. Adachi, T. Kikitsu, Y. Ishida, D. Hashizume, M. Tanaka, H. Kawakami, Y.-J. Pu
    "Colloidal CdS Quantum Dot Fibers Prepared by Electrospinning of Their Wet Gel for Quantum Nanowires"
    ACS Applied Nano Materials, 5, 3756-3762 (2022).

2021
  1. K. Enomoto, R. Oizumi, N. Aizawa, T. Chiba, Y.-J. Pu
    "Energy Transfer from Blue-Emitting CsPbBr3 Perovskite Nanocrystals to Green-Emitting CsPbBr3 Perovskite Nanocrystals"
    Journal of Physical Chemistry C, 125, 19368-19373 (2021).

  2. J. Liu, K. Enomoto, K. Takeda, D. Inoue, Y.-J. Pu
    "Simple Cubic Self-Assembly of PbS Quantum Dots by Finely Controlled Ligand Removal through Gel Permeation Chromatography"
    Chemical Science, 12, 10354-10361 (2021).

  3. B. Drummond, N. Aizawa, Y. Zhang, W. Myers, Y. Xiong, M. Cooper, S. Barlow, Q. Gu, L. Weiss, A. Gillett, D. Credgington, Y.-J. Pu, S. Marder, E. Evans
    "Electron spin resonance resolves intermediate triplet states in delayed fluorescence"
    Nature Communications, 12, 4532 (2021).

  4. M. Kim, S. U. Ryu, S. A. Park, Y.-J. Pu, T. Park
    "Designs and Understanding of Small Molecule-based Non- fullerene Acceptors for Realizing Commercially Viable Organic Photovoltaics"
    Chemical Science, 12, 14004-14023 (2021).

  5. S. Lim, G. Lee, S. Han, J. Kim, S. Yun, J. Lim, Y.-J. Pu, M. J. Ko, T. Park, J. Choi, Y. Kim
    "Monodisperse Perovskite Colloidal Quantum Dots Enables High-Efficiency Photovoltaics"
    ACS Energy Letters, 6, 2229-2237 (2021).

2020
  1. T. Lee, K. Enomoto, K. Ohshiro, D. Inoue, T. Kikitsu, H.-D. Kim, Y.-J. Pu, D. Kim
    "Controlling the Dimension of the Quantum Resonance in CdTe Quantum Dot Superlattices Fabricated via Layer-by-Layer Assembly"
    Nature Communications, 11, 5471 (2020).

  2. N. Aizawa, Y. Harabuchi, S. Maeda, Y.-J. Pu
    "Kinetic Prediction of Reverse Intersystem Crossing in Organic Donor–Acceptor Molecules"
    Nature Communications, 11, 3909 (2020).

  3. B. H. Drummond, G. C. Hoover, A. J. Gillett, N. Aizawa, W. K. Myers, B. T. McAllister, S. T. E. Jones, Y.-J. Pu, D. Credgington, D. S. Seferos
    "Selenium Substitution Enhances Reverse Intersystem Crossing in a Delayed Fluorescence Emitter"
    Journal of Physical Chemistry C, 124, 6364-6370 (2020).

  4. S. Kang, R. Jillella, J. Jeong, Y.-I. Park, Y.-J. Pu, J. Park
    "Improved Electroluminescence Performance of Perovskite Light-Emitting Diodes by a New Hole Transporting Polymer Based on the Benzocarbazole Moiety"
    ACS Applied Materials & Interfaces, 12 (46), 51756–51765 (2020).

2019
  1. Y.-J. Pu, Y. Koyama, D. Otsuki, M. Kim, H. Chubachi, Y. Seino, K. Enomoto, N. Aizawa
    "Exciplex Emissions Derived from Exceptionally Long-Distanced Donor and Acceptor Molecules"
    Chemical Science, 10, 9203-9208 (2019).

  2. K. Enomoto, D. Inoue, Y.-J. Pu
    "Controllable 1D patterned assembly of colloidal quantum dots on PbSO4 nanoribbons"
    Advanced Functional Materials, 29, 1905175 (2019).

  3. Y.-J. Pu, R. Satake, Y. Koyama, T. Otomo, R. Hayashi, N. Haruta, H. Katagiri, D. Otsuki, D. Kim, T. Sato
    "Absence of delayed fluorescence and triplet-triplet annihilation in organic light emitting diodes with spatially orthogonal bianthracenes"
    Journal of Materials Chemistry C, 7, 2541 (2019).

  4. S. Ohisa, T. Takahashi, M. Igarashi, H. Fukuda, T. Hikichi, R. Komatsu, E. Ueki, Y.-J. Pu, T. Chiba, J. Kido
    "An Indolocarbazole-Based Thermally Activated Delayed Fluorescence Host for Solution- Processed Phosphorescent Tandem Organic Light-Emitting Devices Exhibiting Extremely Small Efficiency Roll-Off"
    Advanced Functional Materials, 29, 1808022 (2019).

  5. H. Sasabe, Y. Kato, Y. Watanabe, T. Ohsawa, Naoya Aizawa, W. Fujiwara, Y.-J. Pu, H. Katagiri, J. Kido
    "Room‐Temperature Phosphorescence from a Series of 3‐Pyridylcarbazole Derivatives"
    Chemistry A Europian Journal, 25, 16294 (2019).

2018
  1. T. Chiba, Y. Hayashi, H. Ebe, K. Hoshi, J. Sato, S. Sato, Y.-J. Pu, S. Ohisa, J. Kido
    "Anion-exchange red perovskite quantum dots with ammonium iodine salts for highly efficient light-emitting devices"
    Nature Photonics, 12, 681–687 (2018)

  2. S. Sato, S. Ohisa, Y. Hayashi, R. Sato, D. Yokoyama, T. Kato, M. Suzuki, T. Chiba, Y.‐J. Pu, J. Kido
    "Air-Stable and High-Performance Solution-Processed Organic Light-Emitting Devices Based on Hydrophobic Polymeric Ionic Liquid Carrier-Injection Layers"
    Advanced Materials, 30, 1705915 (2018).

  3. S. Ohisa, K. Endo, K. Kasuga, T. Chiba, Y.-J. Pu, J. Kido
    "Post-Treatment-Free Solution-Processed Reduced Phosphomolybdic Acid Containing Molybdenum Oxide Units for Efficient Hole-Injection Layers in Organic Light-Emitting Devices"
    Inorganic Chemistry, 57 (4), 1950-1957 (2018).

  4. S. Ohisa, T. Hikichi, Y.-J. Pu, T. Chiba, J. Kido
    "Two-Dimensional Ca2Nb3O10 Perovskite Nanosheets for Electron Injection Layers in Organic Light-Emitting Devices"
    ACS Applied Materials & Interfaces, 10 (33), 27885-27893 (2018).

  5. S. Ohisa, T. Kato, T. Takahashi, M. Suzuki, Y. Hayashi, T. Koganezawa, C. R. McNeill, T. Chiba, Y.-J. Pu, J. Kido
    "Conjugated Polyelectrolyte Blend with Polyethyleneimine Ethoxylated for Thickness-Insensitive Electron Injection Layers in Organic Light-Emitting Devices"
    ACS Applied Materials & Interfaces, 10 (20), 17318-17326 (2018).

2017
  1. S. Ohisa, T. Karasawa, Y. Watanabe, T. Ohsawa, Y.-J. Pu, T. Koganezawa, H. Sasabe, J. Kido
    "A Series of Lithium Pyridyl Phenolate. Complexes with a Pendant Pyridyl Group for Electron-Injection Layers in Organic Light-Emitting Devices"
    ACS Applied Materials & Interfaces, 9 (46), 40541-40548 (2017).

  2. T. Chiba, Y.-J. Pu, T. Ide, S. Ohisa, H. Fukuda, T. Hikichi, D. Takashima, T. Takahashi, S. Kawata, J. Kido
    "Addition of Lithium 8-Quinolate into Polyethylenimine Electron-Injection Layer in OLEDs: Not Only Reducing Driving Voltage but Also Improving Device Lifetime"
    ACS Applied Materials & Interfaces, 9 (21), 18113-18119 (2017).

  3. T. Chiba, K. Hoshi, Y.-J. Pu, Y. Takeda, Y. Hayashi, S. Ohisa, S. Kawata, J. Kido
    "High Efficiency Perovskite Quantum-Dot Light-Emitting Devices by Effective Washing Process and Interfacial Energy Level Alignment"
    ACS Applied Materials & Interfaces, 9 (21), 18054-18060 (2017).

  4. S. Kawata, J. Furudate, T. Kimura, H. Minaki, A. Saito, H, Katagiri, Y.-J. Pu
    "Controlling the Excited-State Energy Levels of 9,9'-Bifluorenylidene Derivatives by Twisting their Structure for Attaining Singlet Fission Character in Organic Photovoltaics"
    Journal of Materials Chemistry C, 5, 4909-4914 (2017).

  5. M. J. Sung, H. Chubachi, R. Sato, M.-K. Shin, S.-K. Kwon, Y.-J. Pu, Y.-H. Kim
    "Dimethylsilyl-linked Anthracene-Pyrene Dimers and Their Efficient Triplet-Triplet Annihilation in Organic Light Emitting Diodes"
    Journal of Materials Chemistry C, 5, 1090-1094 (2017).

  6. S. Ohisa, Y.-J. Pu, N. L. Yamada, G. Matsuba, J. Kido
    "Influence of Solution- and Thermal-annealing Processes on the Sub-nanometer-ordered Organic–Organic Interface Structure of Organic Light-Emitting Devices"
    Nanoscale, 9 (1), 25-30 (2017).

2016
  1. S. Kawata, Y.-J. Pu, A. Saito, Y. Kurashige, T. Beppu, H. Katagiri, M. Hada, J. Kido
    "Singlet Fission of Non-polycyclic Aromatic Molecules in Organic Photovoltaics"
    Advanced Materials, 28 (8), 1585-1590 (2016).

  2. Y. Seino, S. Inomata, H. Sasabe, Y.-J. Pu, J. Kido
    "High performance Green Organic LEDs Using Thermally Activated Delayed Fluorescence with Power Efficiency of 100 lm/W"
    Advanced Materials, 28 (13), 2638-2643 (2016).

  3. S. Ohisa, S. Kagami, Y.-J. Pu, T. Chiba, J. Kido
    "A Solution-Processed Heteropoly Acid Containing MoO3 Units as a Hole-Injection Material for Highly Stable Organic Light-Emitting Devices"
    ACS Applied Materials & Interfaces, 8 (32), 20946-20954 (2016).

  4. S. Ohisa, Y.-J. Pu, J. Kido
    "Poly(pyridinium iodide ionic liquid)-based Electron Injection Layer for Solution-processed Organic Light-emitting Devices"
    Journal of Materials Chemistry C, 4 (28), 6713-6719 (2016).

2015
  1. T. Chiba, Y.-J. Pu, J. Kido
    "Solution-Processed White Phosphorescent Tandem Organic Light-Emitting Devices"
    Advanced Materials, 27 (32), 4681-4687 (2015).

  2. Y.-J. Pu, T. Chiba, K. Ideta, S. Takahashi, N. Aizawa, T. Hikichi, J. Kido
    "Fabrication of organic light-emitting devices comprising stacked light-emitting units by solution-based processes"
    Advanced Materials, 27 (8), 1327-1332 (2015).

  3. Y.-J. Pu, N. Morishita, T. Chiba, S. Ohisa, M. Igarashi, A. Masuhara, J. Kido
    "Efficient Electron Injection by Size- and Shape-Controlled Zinc Oxide Nanoparticles in Organic Light Emitting Devices"
    ACS Applied Materials & Interfaces, 7 (45), 25373-25377 (2015).

  4. S. Ohisa, Y.-J. Pu, N. L. Yamada, G. Matsuba, J. Kido
    "Molecular Interdiffusion between Stacked Layers by Solution- and Thermal Annealing-Process in Organic Light Emitting Devices"
    ACS Applied Materials & Interfaces, 7 (37), 20779-20785 (2015).

  5. T. Chiba, Y.-J. Pu, J. Kido
    "Solution-Processable Electron Injection Materials for Organic Light-Emitting Devices"
    Journal of Materials Chemistry C, 3 (44), 11567-11576 (2015).

  6. T. Beppu, K. Tomiguchi, A. Masuhara, Y.-J. Pu, H. Katagiri
    "Single Benzene Green Fluorophore: Solid-State Emissive, Water- Soluble, and Solvent and pH Independent Fluorescence with Large Stokes Shifts"
    Angewandte Chemie International Edition, 54 (25), 7332-7335 (2015).

  7. Y. Watanabe, H. Sasabe, D. Yokoyama, T. Beppu, H. Katagiri, Y.-J. Pu, J. Kido
    "Simultaneous Manipulation of Intramolecular and Intermolecular Hydrogen Bonds in n-Type Organic Semiconductor Layers: Realization of Horizontal Orientation in OLEDs"
    Advanced Optical Materials, 3 (6), 769-773 (2015).

2014
  1. N. Aizawa, Y.-J. Pu, M. Watanabe, T. Chiba, K. Ideta, N. Toyota, M. Igarashi, Y. Suzuri, H. Sasabe, J Kido
    "Solution-processed multilayer small-molecule light-emitting devices with high-efficiency white-light emission"
    Nature Communications, 5, 5756 (2014).

  2. N. Aizawa, Y.-J. Pu, T. Chiba, S. Kawata, H. Sasabe, J. Kido
    "Instant Low-Temperature Cross-Linking of Poly(N-vinylcarbazole) for Solution-Processed Multilayer Blue Phosphorescent Organic Light-Emitting Devices"
    Advanced Materials, 26 (45), 7543-7546 (2014).

  3. T. Chiba, Y.-J. Pu, S. Takahashi, H. Sasabe, J. Kido
    "Lithium phenolate complexes with pyridine-containing polymer for solution-processable electron injection layers in PLEDs"
    Advanced Functional Materials, 24 (38), 6038-6045 (2014).

  4. J.-Y. Hu, Y.-J. Pu, F. Satoh, S. Kawata, H. Katagiri, H. Sasabe, J. Kido
    "Bisanthracene-Based Donor-Acceptor type Light-Emitting Dopants: Highly Efficient Deep-Blue Emission in Organic Light-Emitting Devices"
    Advanced Functional Materials, 24 (14), 2064-2071 (2014).

  5. S. Kawata Y.-J. Pu, C. Ohashi, K. Nakayama, Z. Hong, J. Kido
    "Morphology control layer of a pyrene dimer enhances the efficiency in small molecule organic photovoltaic cells"
    Journal of Materials Chemistry C, 2 (3), 501-509 (2014).

  6. S. Ohisa, G. Matsuba, N. L. Yamada, Y.-J. Pu, H. Sasabe, J. Kido
    "Precise Evaluation of Angstrom-Ordered Mixed Interfaces in Solution-Processed OLEDs by Neutron Reflectometry"
    Advanced Materials Interfaces, 1 (9), 1400097 (2014).

  7. Y. Seino, H. Sasabe, Y.-J. Pu, J. Kido
    "High Performance Blue Phosphorescent OLED Using Energy Transfer from Exciplex"
    Advanced Materials, 26 (10), 1612-1616 (2014).

2013
  1. J.-Y. Hu, Y.-J. Pu, Y. Yamashita, F. Satoh, S. Kawata, H. Katagiri, H. Sasabe, J. Kido
    "Excimer-Emitting Single Molecules with Stacked π-Conjugated Groups Covalently Linked at the 1,8-Positions of Naphalene for Highly Efficient Blue and Green OLEDs"
    Journal of Materials Chemistry C, 1 (24), 3871-3878 (2013).

  2. H. Sasabe, H. Nakanishi, Y. Watanabe, S. Yano, M. Hirasawa, Y.-J. Pu, J. Kido
    "Extremely Low Operating Voltage Green Phosphorescent Organic Light-Emitting Devices showing 5000 cd m–2 below 3 V"
    Advanced Functional Materials, 23 (44), 5550-5555 (2013).

Before 2012
  1. T. Chiba, Y.-J. Pu, M. Hirasawa, A. Masuhara, H. Sasabe, J. Kido
    "Solution-Processed Inorganic-Organic Hybrid Electron Injection Layer for Polymer Light-Emitting Devices"
    ACS Applied Materials & Interfaces, 4 (11), 6104-6108 (2012).

  2. T. Chiba, Y.-J. Pu, H. Sasabe, J. Kido, Y. Yang
    "Solution-processed organic light-emitting devices with two polymer light-emitting units connected in series by a charge-generation layer"
    Journal of Materials Chemistry, 22 (42), 22769-22773 (2012).

  3. J.-Y. Hu, Y.-J. Pu, G. Nakata, S. Kawata, H. Sasabe, J. Kido
    "A single-molecule excimer-emitting compound for highly efficient fluorescent organic light-emitting devices"
    Chemical Communications, 48 (67), 8434-8436 (2012).

  4. T. D. Nguyen, T. P. Basel, Y.-J. Pu, X.-G. Li, E. Ehrenfreund, Z. V. Vardeny
    "Isotope effect in the spin response of aluminum tris(8-hydroxyquinoline) based devices"
    Physical Review B, 85 (24), 245437 (2012).

  5. H. Sasabe, N. Toyota, H. Nakanishi, T. Ishizaka, Y.-J. Pu, J. Kido
    "3, 3′-Bicarbazole-Based Host Materials for High-Efficiency Blue Phosphorescent OLEDs with Extremely Low Driving Voltage"
    Advanced Materials, 24 (24), 3212-3217 (2012).

  6. Y.-J. Pu, G. Nakata, F. Satoh, H. Sasabe, D. Yokoyama, J. Kido
    "Optimizing the charge balance of fluorescent organic light-emitting devices to achieve high external quantum efficiency beyond the conventional upper limit"
    Advanced Materials, 24 (13), 1765-1770 (2012).

  7. D. Yokoyama, Y. Park, B. Kim, S. Kim, Y.-J. Pu, J. Kido, J. Park
    "Dual efficiency enhancement by delayed fluorescence and dipole orientation in high-efficiency fluorescent organic light-emitting diodes"
    Applied Physics Letters, 99 (12), 123303 (2011).

  8. H. Sasabe, D. Tanaka, D. Yokoyama, T. Chiba, Y.-J. Pu, K. Nakayama, M. Yokoyama, J. Kido
    "Influence of Substituted Pyridine Rings on Physical Properties and Electron Mobilities of 2-Methylpyrimidine Skeleton-Based Electron Transporters"
    Advanced Functional Materials, 21 (2), 336-342 (2011).

  9. S.-J. Su, H. Sasabe, Y.-J. Pu, K. Nakayama, J. Kido
    "Tuning Energy Levels of Electron-Transport Materials by Nitrogen Orientation for Electrophosphorescent Devices with an Ideal Operating Voltage"
    Advanced Materials, 22 (30), 3311-3316 (2010).

  10. H. Sasabe, Y.-J. Pu, K. Nakayama, J. Kido
    "m-Terphenyl-modified carbazole host material for highly efficient blue and green PHOLEDs"
    Chemical Communications, 2009 (43), 6655-6657 (2009).

  11. Y.-J. Pu, M. Higashidate, K. Nakayama, J. Kido
    "Solution-processable organic fluorescent dyes for multicolor emission in organic light emitting diodes"
    Journal of Materials Chemistry, 18 (35), 4183-4188 (2008).

  12. H. Sasabe, T. Chiba, S.-J. Su, Y.-J. Pu, K. Nakayama, J. Kido
    "2-Phenylpyrimidine skeleton-based electron-transport materials for extremely efficient green organic light-emitting devices"
    Chemical Communications, 2008 (44), 5821-5823 (2008).

  13. H. Sasabe, E. Gonmori, T. Chiba, Y.-J. Li, D. Tanaka, S.-J. Su, T. Takeda, Y.-J. Pu, K. Nakayama, J. Kido
    "Wide-Energy-Gap Electron-Transport Materials Containing 3,5-Dipyridylphenyl Moieties for an Ultra High Efficiency Blue Organic Light-Emitting Device"
    Chemistry of Materials, 20 (19), 5951-5953 (2008).

  14. Y. Ie, Y. Umemoto, M. Okabe, T. Kusunoki, K. Nakayama, Y.-J. Pu, J. Kido, H. Tada, Y. Aso
    "Electronegative oligothiophenes based on difluorodioxocyclopentene-annelated thiophenes: synthesis, properties, and n-type FET performances"
    Organic Letters, 10 (5), 833-836 (2008).

  15. Y.-J. Pu, R. E. Harding, S. G. Stevenson, E. B. Namdas, C. Tedeschi, J. P. J. Markham, R. J. Rummings, P. L. Burn, I. D. W. Samuel
    "Solution processable phosphorescent rhenium(I) dendrimers"
    Journal of Materials Chemistry, 17 (40), 4255-4264 (2007).

  16. T. Suga, Y.-J. Pu, S. Kasatori, H. Nishide
    "Cathode- and anode-active poly(nitroxylstyrene)s for rechargeable batteries: p- and n-type redox switching via substituent effects"
    Macromolecules, 40 (9), 3167-3173 (2007).

  17. Y.-J. Pu, M. Soma, J. Kido, H. Nishide
    "A novel triphenylamine-substituted poly(p-phenylenevinylene): improved photo- and electro-luminescent properties"
    Chemistry of Materials, 13 (11), 3817-3819 (2001).

  18. H. Nishide, M. Takahashi, J. Takashima, Y.-J. Pu, E. Tsuchida
    "Acyclic and cyclic di- and tri(4-oxyphenyl-1, 2-phenyleneethynylene)s: their synthesis and ferromagnetic spin interaction"
    Journal of Organic Chemistry, 64 (20), 7375-7380 (1999).