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Welcome to Kondo-lab！

We are conducting research on materials with potential applications in semiconductor photonics from film deposition to device fabrication and evaluation, making full use of film formation methods that can fabricate high-quality semiconductor crystals.

Our research focuses on crystal growth, thin-film growth, and photophysical properties of metal halide perovskite semiconductors, which are promising thin-film solar cell materials with high efficiency and large area potential. Current main research topics are as follows

  • Preparation of metal halide perovskite and heterostructure thin films by co-evaporation
  • Study of photophysical properties of metal halide perovskite mixed crystals
  • Solar cells based on metal halide perovskite thin films
  • Nonlinear optical effects and quantum mechanical photocurrent in perovskite ferroelectric semiconductors
  • Terahertz wave generation from organic ferroelectrics and ferroelectric domain visualization

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    Latest News & Updates

    • ■ Our paper has been published in ACS Applied Materials & Interfaces! "Improved Efficiency and Stability in Inverted-Structure Solar Cells with Lead-Free All-Inorganic Halide Perovskite CsSn1−xZnxBr3."　(ACS Applied Materials & Interfaces, DOI: 10.1021/acsami.4c21442) (2025) (Open access).
    • ■ Our paper on the precise measurement of lattice constants and thermal expansion coefficients of halide perovskite alloy CH3NH3Pb(Br1−xClx)3 has been published in the Japanese Journal of Applied Physics! (Japanese Journal of Applied Physics, 64, 021002 (2025) (Open access). DOI: 10.35848/1347-4065/ada905).
    • ■ The research results of the collaborative study with the Sophia University Oeba Laboratory have been published as an RCAST news release by the University of Tokyo's RCAST.
    • ■Our joint research paper with Professor Ema’s lab at Sophia University has been published. Naoki Shimosako, Mizuki Kumamoto, Yui Muroga, Zihao Liu, Masato Sotome, Takashi Kondo, Hideyuki Kunugita, and Kazuhiro Ema, "Exciton dynamics in CsPbBr3 single crystal: LT splitting energy,exciton-polariton dispersion, and biexciton binding energy." Journal of Chemical Physics, 161, 17, 174703 (2024). DOI: 10.1063/5.0232604
    • ■ Shohei Toyoda, the second-year master's student, received the Presentation Encouragement Award at the 2024 Spring Meeting of the Japan Society of Applied Physics, Congratulations!
    • ■ Hiroaki Fujikawa, a graduate student recievedDepartment of Materials Science and Engineering's Graduation Thesis Award and Dean's Award of the College of Engineering!
    • ■ A paper on vacuum co-deposition of perovskite semiconductor CsSnBr3 was published in the Japanese Journal of Applied Physics! ！ (Japanese Journal of Applied Physics, 63, 01SP23 (2024). DOI: 10.35848/1347-4065/ad1196).
    • ■ A paper on vacuum co-deposition of perovskite semiconductor CsSn1-x Zn x Br3 was published in the Japanese Journal of Applied Physics!(Japanese Journal of Applied Physics, 63, 01SP24 (2024). DOI: 10.35848/1347-4065/acfdb3).
    • ■ Joint research with Dr. Daigo Miyajima on organic-inorganic hybrid perovskites has been published in Angewandte Chemie!Angewandte Chemie, e202309055 (2023). DOI: 10.1002/anie.202309055
    The University of Tokyo Research Center for Advanced Science and Technology promotes collaborative activities. If you are interested in our research, please feel free to contact our assistant professor (Sotome) first.

    TEL： 03-5452-5170
    →Contact us by e-mail

     

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