Publications See also Google Scholar

Preprint

  1. Space-time duality in polariton dynamics

    Suheng Xu, Seunghwi Kim, Rocco A. Vitalone, Birui Yang, Josh Swann, Enrico M. Renzi, Yuchen Lin, Taketo Handa, X. -Y. Zhu, James Hone, Cory Dean, Andrea Cavalleri, M. M. Fogler, Andrew J. Millis, Andrea Alu, and D. N. Basov

    arXiv, arXiv:2506.18224.

  2. Flat band excitons in a three-dimensional supertwisted spiral transition metal dichalcogenide

    Y. Dong, Y. Zhao, L. Klebl, T. Handa, D. Xu, C. Trovatello, C. He, D. Sun, T. P. Darlington, K. W. C. Kwock, J. A. Tulyagankhodjaev, Y. Bai, Y. Shao, M. Fu, R. Queiroz, M. Delor, P. J. Schuck, X.-Y. Zhu, T. Wehling, S. Jin, E. Mele, and D. N. Basov

    arXiv, arXiv:2506.21978.

  3. Rydberg Exciton Dynamics in the Blockade Regime of Cu2O

    Gillian E. Minarik, Eric A. Arsenault, Vinícius da Silveira Lan Avelar, Taketo Handa, X.-Y. Zhu

    arXiv, arXiv:2508.05806.

  4. Tunable Narrowband Terahertz Radiation from van der Waals Ferroelectrics

    C.-Y. Huang*, T. Handa*, D. G. Chica*, Z.-H. Cui, D. Xu, J. Choe, Y. Li, M. L. Feuer, M. E. Delor, M. Fechner, D. R. Reichman, X. Roy, and X.-Y. Zhu

    arXiv, arXiv:2512.06139.

  5. Giant optical spin-orbit interactions in ferroelectric van der Waals waveguides

    Ding Xu, Saeed Rahmanian Koshkaki, Vicente Galicia, Chun-Ying Huang, Victoria Quirós-Cordero, Jakhangirkhodja A Tulyagankhodjaev, André Koch Liston, Daniel G Chica, Emma Lian, Amirhosein Amini, Yongseok Hong, T. Handa, P James Schuck, Xiaoyang Zhu, Xavier Roy, Arkajit Mandal, Milan Delor

    arXiv, arXiv:2605.13707.

Published

  1. Observation of Coherent Ferron Emission and Propagation

    J. Choe*, T. Handa*,†, C.-Y. Huang, A. K. Liston, J. Cox, J. Stensberg, Y. Hong, D. G. Chica, D. Xu, F. Tay, S. Husremovic, V. Avelar, E. A. Arsenault, Z. Zhang, J. McIver, D. N. Basov, M. Delor†, X. Roy†, and X.-Y. Zhu†

    Nat. Mater, 26, XXXX (2026).

    Featured in Phys.org: link

  2. Anderson localization in a two-dimensional metal

    M. Thinel, T. Handa, C. S. Koay, D. G. Chica, N. Olsen, A. Jindal, J. Choe, X. Roy, X.-Y. Zhu, and A. N. Pasupathy

    Phys. Rev. Lett. 136, 096401 (2026).

    Editor's Suggestion & Featured in Physics

  3. Macroscopic Transition Metal Dichalcogenide Monolayers from Gold-Tape Exfoliation Retain Intrinsic Properties

    Nicholas Olsen, Sunggun Yoon, Madisen Holbrook, Morgan Thinel, Luke N. Holtzman, Yufeng Liu, Valerie Hsieh, Yiliu Li, David D. Xu, Esteban Rojas-Gatjens, Dorian Gavilanes, Taketo Handa, Eric A. Arsenault, Chun-Ying Huang, Yinjie Guo, Cory R. Dean, Katayun Barmak, Abhay N. Pasupathy, James C. Hone, and Xiaoyang Zhu

    Nano Lett. 25, 15198–15205 (2025).

  4. Long-lived hot carriers in a polymeric semiconductor

    Taketo Handa† and Xiaoyang Zhu†

    Nat. Mater. 24, 1333–1334 (2025). doi: 10.1038/s41563-025-02286-8.

  5. Terahertz emission from giant optical rectification in a van der Waals material

    Taketo Handa, Chun-Ying Huang, Yiliu Li, Nicholas Olsen, Daniel G. Chica, David D. Xu, Felix Sturm, James W. McIver, Xavier Roy and Xiaoyang Zhu

    Nat. Mater. 24, 1203–1208 (2025).

    Featured in News & Views of Nat. Materials: "A terahertz source for quantum physics"

  6. Coupling of electronic transition to ferroelectric order in a 2D semiconductor

    Chun-Ying Huang, Daniel G Chica, Zhi-Hao Cui, Taketo Handa, Morgan Thinel, Nicholas Olsen, Yufeng Liu, Michael E Ziebel, Guiying He, Yinming Shao, Connor A Occhialini, Jonathan Pelliciari, Dmitri N Basov, Matthew Sfeir, Abhay Pasupathy, Valentina Bisogni, David R Reichman, Xavier Roy, and Xiaoyang Zhu

    Nat. Commun. 16, 1896 (2025).

  7. Spin-Polarized Charge Separation at Two-Dimensional Semiconductor/Molecule Interfaces

    Yufeng Liu, Taketo Handa, Nicholas Olsen, Colin Nuckolls, Xiaoyang Zhu

    J. Am. Chem. Soc. 146, 10052-10059 (2024).

  8. Transient Magnetoelastic Coupling in CrSBr

    Youn Jue Bae, Taketo Handa, Yanan Dai, Jue Wang, Huicong Liu, Allen Scheie, Daniel G Chica, Michael E Ziebel, Andrew D Kent, Xiaodong Xu, Ka Shen, Xavier Roy, and Xiaoyang Zhu

    Phys. Rev. B , in press (2024).

  9. Spontaneous exciton dissociation in transition metal dichalcogenide monolayers

    Taketo Handa, Madisen Holbrook, Nicholas Olsen, Luke N Holtzman, Lucas Huber, Hai I Wang, Mischa Bonn, Katayun Barmak, James C Hone, Abhay N Pasupathy, Xiaoyang Zhu

    Science Advances 10, eadj4060 (2024).

  10. Visualizing moiré ferroelectricity via plasmons and nano-photocurrent in graphene/twisted-WSe2 structures

    Shuai Zhang, Yang Liu, Zhiyuan Sun, Xinzhong Chen, Baichang Li, S. L. Moore, Song Liu, Zhiying Wang, S. E. Rossi, Ran Jing, Jordan Fonseca, Birui Yang, Yinming Shao, Chun-Ying Huang, Taketo Handa, Lin Xiong, Matthew Fu, Tsai-Chun Pan, Dorri Halbertal, Xinyi Xu, Wenjun Zheng, P.J. Schuck, A.N. Pasupathy, C.R. Dean, Xiaoyang Zhu, David H. Cobden, Xiaodong Xu, Mengkun Liu, M.M. Fogler, James C. Hone, D.N. Basov

    Nature Communications 14, 6200 (2023).

  11. Smectic pair-density-wave order in EuRbFe4As4

    He Zhao, Raymond Blackwell, Morgan Thinel, Taketo Handa, Shigeyuki Ishida, X.-Y. Zhu, Akira Iyo, Hiroshi Eisaki, Abhay N. Pasupathy, and Kazuhiro Fujita

    Nature 618, 940–945 (2023).

  12. Photoluminescence Characterization of Halide Perovskite Materials and Solar Cells

    Taketo Handa, Takumi Yamada, and Yoshihiko Kanemitsu

    ECS J. Solid State Sci. Technol. 12, 056004 (2023).

  13. Bilayer Indium Tin Oxide Electrodes for Deformation-Free Ultrathin Flexible Perovskite Solar Cells

    Noboru Ohashi, Ryuji Kaneko, Chikako Sakai, Yoko Wasai, Seiji Higuchi, Kenji Yazawa, Hirokazu Tahara, Taketo Handa, Tomoya Nakamura, Richard Murdey, Yoshihiko Kanemitsu, and Atsushi Wakamiya

    Solar RRL XX, 2300221 (2023).

  14. Anisotropically Fused Clusters Form a 2D Superatomic Sheet Exhibiting Polarized Light Emission

    Taketo Handa+, Petra Shih+, Christie S. Koay+, Colin Nuckolls, Xavier Roy, Timothy C. Berkelbach, and Xiaoyang Zhu

    J. Phys. Chem. C 127, 1519–1526 (2023).

  15. A few-layer covalent network of fullerenes

    Elena Meirzadeh, Austin M. Evans, Mehdi Rezaee, Milena Milich, Connor J. Dionne, Thomas P. Darlington, Si Tong Bao, Amymarie K. Bartholomew, Taketo Handa, Daniel J. Rizzo, Ren A. Wiscons, Mahniz Reza, Amirali Zangiabadi, Natalie Fardian-Melamed, Andrew C. Crowther, P. James Schuck, D. N. Basov, Xiaoyang Zhu, Ashutosh Giri, Patrick E. Hopkins, Philip Kim, Michael L. Steigerwald, Jingjing Yang, Colin Nuckoll, and Xavier Roy

    Nature 613, 71–76 (2023).

  16. Composition–Property Mapping in Bromide-Containing Tin Perovskite Using High-Purity Starting Materials

    Tomoya Nakamura, Kento Otsuka, Shuaifeng Hu, Ruito Hashimoto, Taro Morishita, Taketo Handa, Takumi Yamada, Minh Anh Truong, Richard Murdey, Yoshihiko Kanemitsu, and Atsushi Wakamiya

    ACS Appl. Energy Mater. 5, 14789–14798 (2022).

  17. Charge carrier coupling to the soft phonon mode in a ferroelectric semiconductor

    Mark E. Ziffer, Lucas Huber, Feifan Wang, Victoria A. Posey, Jake C. Russell, Taketo Handa, Xavier Roy, and X.-Y. Zhu

    Phys. Rev. Materials 6, 095401 (2022).

  18. A convenient method for assessing steady-state carrier density and lifetime in solar cell materials using pulse excitation measurements

    Taketo Handa, Takumi Yamada, and Yoshihiko Kanemitsu

    J. Chem. Phys. 157, 084201 (2022).

  19. Metal-free ferroelectric halide perovskite exhibits visible photoluminescence correlated with local ferroelectricity

    Taketo Handa, Ruito Hashimoto, Go Yumoto, Tomoya Nakamura, Atsushi Wakamiya, and Yoshihiko Kanemitsu

    Sci. Adv. 8, eabo1621 (2022).

    Picked up on Kyoto University's website, ICR at Kyoto University's website, 日刊工業新聞, マイナビニュース etc.

  20. Optimized carrier extraction at interfaces for 23.6% efficient tin-lead perovskite solar cells

    S. Hu, K. Otsuka, R. Murdey, T. Nakamura, M. A. Truong, T. Yamada, T. Handa, K. Matsuda, K. Nakano, A. Sato, K. Marumoto, K. Tajima, Y. Kanemitsu, and A. Wakamiya

    Energy Environ. Sci. 15, 2096-2107 (2022).

    Picked up on Kyoto University's website

  21. Mixed lead-tin perovskite films with > 7 μs charge carrier lifetimes realized by maltol post-treatment

    S. Hu, M.A. Truong, K. Otsuka, T. Handa, T. Yamada, R. Nishikubo, Y. Iwasaki, A. Saeki, R. Murdey, Y. Kanemitsu, and A. Wakamiya

    Chem. Sci. 12, 13513-13519 (2021).

  22. Light emission from halide perovskite semiconductors: bulk crystals, thin films, and nanocrystals

    Takumi Yamada, Taketo Handa, Yasuhiro Yamada, and Yoshihiko Kanemitsu

    J. Phys. D: Appl. Phys. 54, 383001 (2021).

    Topical review

  23. Near-Ultraviolet Transparent Organic Hole-Transporting Materials Containing Partially Oxygen-Bridged Triphenylamine Skeletons for Efficient Perovskite Solar Cells

    Minh Anh Truong, Hayoon Lee, Ai Shimazaki, Ryota Mishima, Masashi Hino, Kenji Yamamoto, Kento Otsuka, Taketo Handa, Yoshihiko Kanemitsu, Richard Murdey, and Atsushi Wakamiya

    ACS Appl. Energy Mater. 4, 1484-1495 (2021).

  24. Materials Chemistry Approach for Efficient Lead-Free Tin Halide Perovskite Solar Cells

    T. Nakamura, T. Handa, R. Murdey, Y. Kanemitsu, and A. Wakamiya

    ACS Appl. Electron. Mater. 2, 3794-3804 (2020).

    Spotlight on Applications

  25. Phonon, thermal, and thermo-optical properties of halide perovskites

    T. Handa, T. Yamada, M. Nagai, and Y. Kanemitsu

    Phys. Chem. Chem. Phys. 22, 26069-26087 (2020).

    Perspective paper Selected as 2020 HOT PCCP article, so it is free to access until Februrary 2021!

  26. Large thermal expansion leads to negative thermo-optic coefficient of halide perovskite CH3NH3PbCl3

    T. Handa, H. Tahara, T. Aharen, A. Shimazaki, A. Wakamiya, and Y. Kanemitsu

    Phys. Rev. Materials 4, 074604 (2020).

    Open access

  27. Sn(IV)-free tin perovskite films realized by in situ Sn(0) nanoparticle treatment of the precursor solution

    T. Nakamura, S. Yakumaru, M. A. Truong, K. Kim, J. Liu, S. Hu, K. Otsuka, R. Hashimoto, R. Murdey, T. Sasamori, H. D. Kim, H. Ohkita, T. Handa, Y. Kanemitsu, and A. Wakamiya

    Nat. Commun. 11, 3008 (2020).

    Open access Picked up on Kyoto University's website

  28. Optical responses of lead halide perovskite semiconductors

    Y. Kanemitsu, T. Yamada, T. Handa, and M. Nagai

    Semicond. Sci. Technol. 35, 093001 (2020).

    Topycal review

  29. One-step solution synthesis of white-light-emitting films via dimensionality control of the Cs-Cu-I system

    T. Jun, T. Handa, K. Sim, S. Iimura, M. Sasase, J. Kim, Y. Kanemitsu, and H. Hosono

    APL Mater. 7, 111113 (2019).

    Open access Featured in Scilight

  30. Photophysics of lead-free tin halide perovskite films and solar cells

    T. Handa, A. Wakamiya, and Y. Kanemitsu

    APL Mater. 7, 080903 (2019).

    Perspective paper Open access

  31. Large negative thermo-optic coefficients of a lead halide perovskite

    T. Handa, H. Tahara, T. Aharen, and Y. Kanemitsu

    Sci. Adv. 5, eaax0786 (2019).

    Open access Picked up on Kyoto University's website.

  32. Structure-property relations in Ag-Bi-I compounds: potential Pb-free absorbers in solar cells

    A. Koedtruad, M. Goto, M. A. Patino, Z. Tan, H. Guo, T. Nakamura, T. Handa, W.-T. Chen, Y.-C. Chuang, H.-S. Sheu, T. Saito, D. Kan, Y. Kanemitsu, A. Wakamiya, and Y. Shimakawa

    J. Mater. Chem. A 7, 5583-5588 (2019).

  33. Lead‐Free Solar Cells based on Tin Halide Perovskite Films with High Coverage and Improved Aggregation

    J. Liu, M.Ozaki, S. Yakumaru, T. Handa, R. Nishikubo, Y. Kanemitsu, A. Saeki, Y. Murata, R. Murdey, and A. Wakamiya

    Angew. Chem. Int. Ed. 57, 13221-13225 (2018).

  34. Photophysics of metal halide perovskites: from materials to devices

    Y. Kanemitsu and T. Handa

    Jpn. J. Appl. Phys. 57, 090101 (2018).

    Invited review Open access Awarded for the JSAP Best Review Paper Award

  35. Radiative recombination and electron-phonon coupling in lead-free CH3NH3SnI3 perovskite thin films

    T. Handa, T. Aharen, A. Wakamiya, and Y. Kanemitsu

    Phys. Rev. Materials 2, 075402 (2018).

  36. Solvent-Coordinated Tin Halide Complexes as Purified Precursors for Tin-based Perovskites

    M. Ozaki, Y. Katsuki, J. Liu, T. Handa, R. Nishikubo, S. Yakumaru, Y. Hashikawa, Y. Murata, T. Saito, Y. Shimakawa, Y. Kanemitsu, A. Saeki, and A. Wakamiya

    ACS Omega 2, 7016-7021 (2017).

  37. Photocarrier Recombination and Injection Dynamics in Long-Term Stable Lead-Free CH3NH3SnI3 Perovskite Thin Films and Solar Cells

    T. Handa, T. Yamada, H. Kubota, S. Ise, Y. Miyamoto, and Y. Kanemitsu

    J. Phys. Chem. C 121, 16158-16165 (2017).

  38. Charge Injection Mechanism at Heterointerfaces in CH3NH3PbI3 Perovskite Solar Cells Revealed by Simultaneous Time-Resolved Photoluminescence and Photocurrent Measurements

    T. Handa, D. M. Tex, A. Shimazaki, A. Wakamiya, and Y. Kanemitsu

    J. Phys. Chem. Lett. 8, 954-960 (2017).

  39. Charge Injection at the Heterointerface in Perovskite CH3NH3PbI3 Solar Cells Studied by Simultaneous Microscopic Photoluminescence and Photocurrent Imaging Spectroscopy

    D. Yamashita, T. Handa, T. Ihara, H. Tahara, A. Shimazaki, A. Wakamiya, and Y. Kanemitsu

    J. Phys. Chem. Lett. 7, 3186-3191 (2016).

  40. Optical Characterization of Voltage-Accelerated Degradation in CH3NH3PbI3 Perovskite Solar Cells

    T. Handa, D. M. Tex, A. Shimazaki, T. Aharen, A. Wakamiya, and Y. Kanemitsu

    Opt. Express 24, A917-A924 (2016).

日本語解説

  1. 非鉛スズハライドペロブスカイトの基礎光物性

    金光義彦, 半田岳人

    日本写真学会誌 81, 334-337 (2018).

Proceedings

  1. Photoelectronic properties of lead-free CH3NH3SnI3 perovskite solar cell materials and devices

    T. Handa, T. Aharen, A. Wakamiya, and Y. Kanemitsu

    Proc. SPIE 10737, 107371X-1 (2018).

  2. Photophysics of organic-inorganic hybrid perovskite solar cells

    H. Tahara, T. Handa, and Y. Kanemitsu

    Proc. SPIE 10527, 1052702 (2018).

  3. Carrier Injection and Recombination Processes in Perovskite CH3NH3PbI3 Solar Cells Studied by Electroluminescence Spectroscopy

    T. Handa, M. Okano, D. M. Tex, A. Shimazaki, T. Aharen, A. Wakamiya, and Y. Kanemitsu

    Proc. SPIE 9745, 97451I-1 (2016).