Peijun Guo

Assistant Professor of Chemical & Environmental Engineering
Room / Office: A177
Office Address:
810 West Campus Drive
West Haven, CT 06516
Mailing Address:
P.O. Box 208286
New Haven, CT 06520
Phone: (203) 432-4200
Fax: (203) 432-4387
  • Ph.D., Northwestern University
  • M.Sc., Northwestern University
  • B.Sc., Tsinghua University


  • Growth and synthesis of nanostructured materials with enhanced light-matter interactions for applications in energy conversion, optoelectronics and information science
  • Ultrafast optical spectroscopy to temporally and spatially resolve the flow of energy in functional materials and heterostructures
  • Optical manipulation and control of excited and nonequilibrium states in emerging materials

Selected Awards & Honors:

  • ACS PRF Doctoral New Investigator (2022)
  • AFOSR Young Investigator Program (YIP) Award (2022)
  • Enrico Fermi Named Fellowship of Argonne National Laboratory (2017-2019)
  • Graduate Student Gold Award, MRS Fall Meeting (2016)
  • SPIE Optics and Photonics Education Scholarship (2016)

Selected Publications:

  • P. Guo, A. M. Kanakkithodi, J. Gong, Y. Xia, C. C. Stoumpos, D. H. Cao, B. T. Diroll, J. B. Ketterson, G. P. Wiederrecht, T. Xu, M. K. Y. Chan, M. G. Kanatzidis, R. D. Schaller, "Infrared-pump electronic-probe of methylammonium lead iodide reveals electronically decoupled organic and inorganic sublattices", Nat. Commun., 2019, 10, 482
  • P. Guo, W. Huang, C. C. Stoumpos, L. Mao, J. Gong, L. Zeng, B. T. Diroll, Y. Xia, X. Ma, D. J. Gosztola, T. Xu, J. B. Ketterson, M. J. Bedzyk, A. Facchetti, T. J. Marks, M. G. Kanatzidis, R. D. Schaller, "Hyperbolic dispersion arising from anisotropic excitons in two-dimensional perovskites", Phys. Rev. Lett., 2018, 121, 127401
  • P. Guo, J. Gong, S. Sadasivam, Y. Xia, T.-B. Song, B. T. Diroll, C. C. Stoumpos, J. B. Ketterson, M. G. Kanatzidis, M. K. Y. Chan, P. Darancet, T. Xu, R. D. Schaller, "Slow thermal equilibration in methylammonium lead iodide revealed by transient mid-infrared spectroscopy", Nat. Commun., 2018, 9, 2792
  • P. Guo, C. C. Stoumpos, L. Mao, S. Sadasivam, J. B. Ketterson, P. Darancet, M. G. Kanatzidis, R. D. Schaller, "Cross-plane coherent acoustic phonons in two-dimensional organic-inorganic hybrid perovskites", Nat. Commun., 2018, 9, 2019
  • P. Guo, R. D. Schaller, L. E. Ocola, B. T. Diroll, J. B. Ketterson, R. P. H. Chang, "Large optical nonlinearity of ITO nanorods for sub-picosecond all-optical modulation of the full-visible spectrum", Nat. Commun., 2016, 7, 12892
  • P. Guo, R. D. Schaller, J. B. Ketterson, R. P. H. Chang, "Ultrafast switching of tunable infrared plasmons in indium tin oxide nanorod arrays with large absolute amplitude", Nat. Photonics, 2016, 10, 267-273