Seminaire SOLEIL - P. Schulz - Lundi 6/02/2023

Interfaces in Halide Perovskite Solar Cells

Philip SCHULZ
(Institut Photovoltaïque d’Île de France (IPVF), CNRS, Palaiseau)

Lundi 6 février 2023 – 14h00
Amphitheatre SOLEIL

In the past decade, metal halide perovskite (MHP)-based solar cells marked a breakthrough in photovoltaic technologies and reach power conversion efficiencies exceeding 25%. While MHPs exhibit a remarkable defect tolerance, film degradation will eventually deteriorate the optoelectronic properties and hence device performance. A key strategy to substantially enhance the stability is to tailor the interfaces in the device.1

Here, I will discuss the impact of interface formation on device performance also considering the effect of chemical reactions on interface energetics and durability,2,3 In particular, I will describe our use of surface-sensitive photoemission spectroscopy (PES) as a primary tool to provide guidelines for controlling the chemistry and optimize the electronic properties of MHP interfaces.4

[1] Christians, J.A. et al. Nature Energy 2018, 3, 68–74.
[2] Schulz, P.; Cahen, D.; Kahn, A. Chem. Rev. 2019, 119, 3349-3417
[3] Raninga, R. D. et al. Nano Energy 2020, 75, 104946
[4] Dunfield S. P. et al. Cell Rep. Phys. Sci. 2021, 2, 100520

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