Unveiling the Secrets of tunable emission color coordinates in Sn-based layered related perovskite- structures

Aarya Prabhakaran^a^,^b, Balaji Dhanabalan^a, Iryna Andrusenko^c, Andrea Pianetti^d, Simone Lauciello^a, Mirko Prato^a, Sergio Marras^a, Pavlo Solokha^b, Mauro Gemmi^c, Sergio Brovelli^d, Liberato Manna^a, Milena P. Arciniegas^a

^aCenter for Convergent Technologies, IstitutoItalianodiTecnologia,16163Genova,Italy

^bDipartimento di Chimica e Chimica Industriale, Universita degliStudidiGenova,16146Genova,Italy

^cElectron Crystallography, Center for MaterialsInterfaces,IstitutoItalianodiTecnologia,56025 Pontedera, Italy

^dDipartimento di Scienza dei Materiali, Universita degli Studi di Milano-Bicocca,20125Milano, Italy

Materials for Sustainable Development Conference (MATSUS)
Proceedings of MATSUS Fall 2023 Conference (MATSUSFall23)

#MHPN3 - Fundamental Advances in Metal Halide Perovskites and Beyond: new materials, new mechanisms, and new challenges

Torremolinos, Spain, 2023 October 16th - 20th

Organizers: Paola Vivo, Qiong Wang and Kaifeng Wu

Oral, Aarya Prabhakaran, presentation 234
DOI: https://doi.org/10.29363/nanoge.matsus.2023.234
Publication date: 18th July 2023

Organic–inorganic Pb-free layered perovskites are promising green solution for lighting applications. In particular, Sn-based layered structures are highly efficient photoluminescent materials, but their emission color is limited to the yellow-orange range of the visible spectrum and their synthesis requires a controlled atmosphere and long preparation time. Here, we developed a synthesis protocol, which is performed in three key steps under ambient conditions and at low temperatures (4 °C). This simple synthesis approach enabled to investigate of a set of organic cations with different molecular structures, including both conventional alkylammonium and cyclic cations with heteroatoms, which resulted in stable structures showing different color coordinates, from yellowish-orange to orange-red, to blue-green. The observed variations in color chromaticity are attributed to the distinct connectivity of Sn–Br octahedra, ranging from fully disconnected to face-sharing, while retaining the intercalation of organic-inorganic layers, as confirmed by X-ray and 3D electron diffraction analyses. Our findings can inspire further research into the tunability of the emission of Pb-free layered perovskites via the use of organic cations to promote their use in solid-state lighting.[1]

References:

[1] Stable Sn-Based Hybrid Perovskite-Related Structures with Tunable Color Coordinates via Organic Cations in Low-Temperature Synthesis Aarya Prabhakaran, Balaji Dhanabalan, Iryna Andrusenko, Andrea Pianetti, Simone Lauciello, Mirko Prato, Sergio Marras, Pavlo Solokha, Mauro Gemmi, Sergio Brovelli, Liberato Manna, and Milena P. Arciniegas ACS Energy Letters 2023 8 (6), 2630-2640

Acknowledgements:

I.A.and M.G.acknowledge Regione Toscana for funding the purchase of the ASI MEDIPIX detector through the FELIX project (Por CREOFESR2014-2020action).S.B.acknowledges Horizon 2020 AIDA Innova Grant 101004761. The authors thank the Electron Microscopy, materials characterization, and Nanochemistry Facilities at the Istituto Italiano di Tecnologia for their technical support.

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