Charge-carrier dynamics and optoelectronic properties of metal halide perovskites for solar cells

  • Online Seminar
  • Date: Oct 12, 2020
  • Time: 11:00
  • Speaker: Adam D. Wright
  • University of Oxford
Charge-carrier dynamics and optoelectronic properties of metal halide perovskites for solar cells
Over the past decade, metal halide perovskites have become renowned for their rapidly improving performance as photovoltaic active layers. This success has however often outpaced understanding of the electronic processes occurring within these materials. In this talk, I will give an overview of my work on the factors influencing electron motion and recombination in a series of metal halide perovskites, ranging from the archetypal CH3NH3PbI3 to the double-perovskite Cs2AgBiBr6. Using a combination of optical spectroscopy with computational techniques, I have investigated electron-phonon coupling [1], trap-mediated recombination [2], halide segregation [3] and intrinsic quantum confinement [4] within these materials, developing quantitative models to explain these phenomena.

[1] Wright, A.D. et al., Nat. Commun., 7, 11755 (2016)
[2] Wright, A.D. et al., Adv. Funct. Mat., 27, 1700860 (2017)
[3] Knight, A. J. et al., ACS Energy Lett., 4, 75 (2019)
[4] Wright, A.D. et al., Nat. Mater., (2020)

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