(Online talk) 2D passivation of 3D halide perovskite films: What is moving at the 2D/3D interface ?
Carolin Sutter-Fella a
a Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, 94720 California, USA
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV24)
València, Spain, 2024 May 12th - 15th
Organizer: Bruno Ehrler
Invited Speaker Session, Carolin Sutter-Fella, presentation 060
DOI: https://doi.org/10.29363/nanoge.hopv.2024.060
Publication date: 6th February 2024

Organic-inorganic halide perovskites are a versatile material class with excellent optoelectronic properties which hold promise for application in solar cells, photodetectors, lasers, and LEDs. Stability under device relevant conditions is a challenge for these materials. Thus, one of the current research directions is the stabilization of 3D halide perovskite thin films with 2D or quasi-2D layered perovskite phases. In this talk I will describe our joint efforts in stabilizing 3D perovskite films with 2D perovskites. I will first take a closer look at the 2D/3D interface formation[1] and second at interface diffusion. In situ photoluminescence measurements show that formation and diffusion significantly depend on the organic backbone of the 2D molecule, the nature of the halide, as well as on the 3D absorber composition which makes generalized statements about the 2D passivation strategy challenging. Another aspect I will briefly touch on is reproducibility challenges in the field. A robotic platform for the fabrication and characterization of thin films will be introduced to systematically screen the fabrication parameter space and thus improve reproducibility.[2]

Work at the Molecular Foundry was supported by the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.

© FUNDACIO DE LA COMUNITAT VALENCIANA SCITO
We use our own and third party cookies for analysing and measuring usage of our website to improve our services. If you continue browsing, we consider accepting its use. You can check our Cookies Policy in which you will also find how to configure your web browser for the use of cookies. More info