2026-04-05T10:46:07Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/4552942026-03-13T07:06:15Zcom_2072_98col_2072_378192

Highly Stable Perovskite Supercrystals via Oil-in-Oil Templating Tang, Yingying Gomez, Leyre Lesage, Arnon Marino, Emanuele Kodger, Thomas E. Meijer, Janne-Mieke Kolpakov, Paul Meng, Jie Zheng, Kaibo Gregorkiewicz, Tom Schall, Peter Assembly Emulsion-droplet templating Supercrystals Perovskite films Stability Inorganic perovskites display an enticing foreground for their wide range of optoelectronic applications. Recently, supercrystals (SCs) of inorganic perovskite nanocrystals (NCs) have been reported to possess highly ordered structure as well as novel collective optical properties, opening new opportunities for efficient films. Here, we report the large-scale assembly control of spherical, cubic, and hexagonal SCs of inorganic perovskite NCs through templating by oil-in-oil emulsions. We show that an interplay between the roundness of the cubic NCs and the tension of the confining droplet surface sets the superstructure morphology, and we exploit this interplay to design dense hyperlattices of SCs. The SC films show strongly enhanced stability for at least two months without obvious structural degradation and minor optical changes. Our results on the controlled large-scale assembly of perovskite NC superstructures provide new prospects for the bottom-up production of optoelectronic devices based on the microfluidic production of mesoscopic building blocks. 2020 Article Nano letters ; Vol. 20, Issue 12 (August 2020), p. 5997-6004 open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. https://creativecommons.org/licenses/by-nc-nd/4.0/