0557449 - FZÚ 2023 RIV US eng J - Článek v odborném periodiku
Telychko, M. - Edalatmanesh, Shayan - Leng, K. - Abdelwahab, I. - Guo, N. - Zhang, C. - Mendieta Moreno, Jesús Ignacio - Nachtigall, Matyáš - Li, J. - Loh, K.P. - Jelínek, Pavel - Lu, J.
Sub-angstrom noninvasive imaging of atomic arrangement in 2D hybrid perovskites.
Science Advances. Roč. 8, č. 17 (2022), č. článku eabj0395. ISSN 2375-2548. E-ISSN 2375-2548
Grant CEP: GA ČR(CZ) GX20-13692X
Grant ostatní: AV ČR(CZ) AP1601
Program: Akademická prémie - Praemium Academiae
Výzkumná infrastruktura: CzechNanoLab - 90110
Institucionální podpora: RVO:68378271
Klíčová slova: nc-AFM * DFT * perovskites * atomic structure
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 13.6, rok: 2022 ; AIS: 5.404, rok: 2022
Způsob publikování: Open access
DOI: https://doi.org/10.1126/sciadv.abj0395

Noninvasive imaging of the atomic arrangement in two-dimensional (2D) Ruddlesden-Popper hybrid perovskites (RPPs) is challenging because of the insulating nature and softness of the organic layers. Here, we demonstrate a sub-angstrom resolution imaging of both soft organic layers and inorganic framework in a prototypical 2D lead-halide RPP crystal via combined tip-functionalized scanning tunneling microscopy (STM) and noncontact atomic force microscopy (ncAFM) corroborated by theoretical simulations. STM measurements unveil the atomic reconstruction of the inorganic lead-halide lattice and overall twin-domain composition of the RPP crystal, while ncAFM measurements with a CO-tip enable nonperturbative visualization of the cooperative reordering of surface organic cations driven by their hydrogen bonding interactions with the inorganic lattice. Moreover, such a joint technique also allows for the atomic-scale imaging of the electrostatic potential variation across the twin-domain walls, revealing alternating quasi-1D electron and hole channels at neighboring twin boundaries, which may influence in-plane exciton transport and dissociation.
Trvalý link: https://hdl.handle.net/11104/0333921