Perovskite semiconductors are among the most promising energy materials for new generations of low-cost, highly efficient technological devices such as solar cells and light-emitting diodes. This Focus Group investigates the physical and chemical phenomena that underlie the spectacular optoelectronic properties of perovskite and perovskite-like materials. These include the transport of electric and ionic charge, optical properties, and vibrational characteristics. The goal of the Focus Group is to propose novel perovskite and perovskite-like material compositions that show improved properties, e.g., enhanced stability or reduced toxicity. To this end, the research approach combines a variety of tools from optical spectroscopy, microscopic theory, and material synthesis.
Prof. Herz has been awarded a TUM-IAS@e-conversion Hans Fischer Senior Fellowship.
Buizza, Leonardo R. V.; Herz, Laura M.: Polarons and Charge Localization in Metal‐Halide Semiconductors for Photovoltaic and Light‐Emitting Devices. Advanced Materials 33 (24), 2021, 2007057 mehr…
Buizza, Leonardo R. V.; Sansom, Harry C.; Wright, Adam D.; Ulatowski, Aleksander M.; Johnston, Michael B.; Snaith, Henry J.; Herz, Laura M.: Interplay of Structure, Charge‐Carrier Localization and Dynamics in Copper‐Silver‐Bismuth‐Halide Semiconductors. Advanced Functional Materials 32 (6), 2021, 2108392 mehr…
Buizza, Leonardo R. V.; Wright, Adam D.; Longo, Giulia; Sansom, Harry C.; Xia, Chelsea Q.; Rosseinsky, Matthew J.; Johnston, Michael B.; Snaith, Henry J.; Herz, Laura M.: Charge-Carrier Mobility and Localization in Semiconducting Cu2AgBiI6 for Photovoltaic Applications. ACS Energy Letters 6 (5), 2021, 1729-1739 mehr…
Motti, Silvia G.; Patel, Jay B.; Oliver, Robert D. J.; Snaith, Henry J.; Johnston, Michael B.; Herz, Laura M.: Phase segregation in mixed-halide perovskites affects charge-carrier dynamics while preserving mobility. Nature Communications 12 (1), 2021 mehr…
Sansom, Harry C.; Longo, Giulia; Wright, Adam D.; Buizza, Leonardo R. V.; Mahesh, Suhas; Wenger, Bernard; Zanella, Marco; Abdi-Jalebi, Mojtaba; Pitcher, Michael J.; Dyer, Matthew S.; Manning, Troy D.; Friend, Richard H.; Herz, Laura M.; Snaith, Henry J.; Claridge, John B.; Rosseinsky, Matthew J.: Highly Absorbing Lead-Free Semiconductor Cu2AgBiI6 for Photovoltaic Applications from the Quaternary CuI–AgI–BiI3 Phase Space. Journal of the American Chemical Society 143 (10), 2021, 3983-3992 mehr…
Savill, Kimberley J.; Ulatowski, Aleksander M.; Herz, Laura M.: Optoelectronic Properties of Tin–Lead Halide Perovskites. ACS Energy Letters 6 (7), 2021, 2413-2426 mehr…
Ulatowski, Aleksander M.; Farrar, Michael D.; Snaith, Henry J.; Johnston, Michael B.; Herz, Laura M.: Revealing Ultrafast Charge-Carrier Thermalization in Tin-Iodide Perovskites through Novel Pump–Push–Probe Terahertz Spectroscopy. ACS Photonics 8 (8), 2021, 2509-2518 mehr…
Wright, Adam D.; Buizza, Leonardo R. V.; Savill, Kimberley J.; Longo, Giulia; Snaith, Henry J.; Johnston, Michael B.; Herz, Laura M.: Ultrafast Excited-State Localization in Cs2AgBiBr6 Double Perovskite. The Journal of Physical Chemistry Letters 12 (13), 2021, 3352-3360 mehr…
Xia, Chelsea Q; Poncé, Samuel; Peng, Jiali; Ulatowski, Aleksander M; Patel, Jay B; Wright, Adam D; Milot, Rebecca L; Kraus, Hans; Lin, Qianqian; Herz, Laura M; Giustino, Feliciano; Johnston, Michael B: Ultrafast photo-induced phonon hardening due to Pauli blocking in MAPbI<sub>3</sub> single-crystal and polycrystalline perovskites. Journal of Physics: Materials 4 (4), 2021, 044017 mehr…
