Synthesis of Polycrystalline Ruddlesden-Popper Organic Lead Halides and Their Growth Dynamics

Author(s)

Moral, Raphael F. ^[1] ; Bonato, Luiz Gustavo ^[1] ; Germino, Jose Carlos ^[1] ; Coelho Oliveira, Willian Xerxes ^{[2, 1]} ; Kamat, Rupini ^{[3, 4]} ; Xu, Junwei ^[3] ; Tassone, Christopher J. ^[3] ; Stranks, Samuel D. ^[5] ; Toney, Michael F. ^[3] ; Nogueira, Ana Flavia ^[1]

Affiliation

^[1] Univ Estadual Campinas, Inst Chem, Lab Nanotecnol & Energia Solar, BR-13083970 Campinas, SP - Brazil

^[2] Univ Fed Minas Gerais, Inst Ciencias Exatas, Dept Quim, BR-31270901 Belo Horizonte, MG - Brazil

^[3] SLAG Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 - USA

^[4] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 - USA

^[5] Univ Cambridge, Cavendish Lab, 19 JJ Thomson Ave, Cambridge CB0 0HE - England

• Document type: Journal article
• Source: CHEMISTRY OF MATERIALS; v. 31, n. 22, p. 9472-9479, NOV 26 2019.
• Web of Science Citations: 1

Abstract

Ruddlesden-Popper organic lead halides (RPOLHs) are in the material science spotlight because of their remarkable optoelectronic properties, tailorable compositions, and improved ambient stability over their three-dimensional perovskite analogues. In this report, we introduce a new synthesis method for RPOLHs with general composition L-2{[}FAPbI(3)](n-1)PbI4 {[}L = butylammonium (BA) or benzylammonium (BZA), FA = formamidinium, and n = 1 and 2]. Our method yields polycrystalline materials useful for thin-film fabrication for optoelectronic applications. Furthermore, we report the growth dynamics of BA(2){[}FAPbI(3)]PbI4 using in situ small-angle X-ray scattering, revealing that the slabs grow within the first seconds of the reaction and then self-assemble into bulk crystallites. (AU)

• FAPESP's process: 16/02268-9 - Hybrid nanocomposites composed of cesium lead-halide perovskite quantum dots and semiconducting polymers for third generation solar cells
• Grantee: Raphael Fernando Moral
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 17/11986-5 - Generation and storage of New Energy: bringing technological development for the country
• Grantee: Ana Flávia Nogueira
• Support Opportunities: Research Grants - Research Centers in Engineering Program
• FAPESP's process: 17/11019-5 - Cs-based lead perovskite nanocrystals nucleation and growth studies via in situ SAXS and WAXS.
• Grantee: Raphael Fernando Moral
• Support Opportunities: Scholarships abroad - Research Internship - Master's degree