Stabilization of MAPbBr3 Perovskite Quantum Dots on Perovskite MOFs by a One-Step Mechanochemical Synthesis

Darsi Rambabu; Sohini Bhattacharyya; Tarandeep Singh; Chakravarthy M L; Tapas Kumar Maji

doi:10.1021/acs.inorgchem.9b03183

Stabilization of MAPbBr₃ Perovskite Quantum Dots on Perovskite MOFs by a One-Step Mechanochemical Synthesis

Inorg Chem. 2020 Jan 21;59(2):1436-1443. doi: 10.1021/acs.inorgchem.9b03183. Epub 2020 Jan 7.

Authors

Darsi Rambabu¹, Sohini Bhattacharyya¹, Tarandeep Singh¹, Chakravarthy M L¹, Tapas Kumar Maji¹

Affiliation

¹ Molecular Materials Laboratory, Chemistry and Physics of Materials Unit, School of Advanced Materials (SAMat) , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bangalore 560064 , India.

PMID: 31909613
DOI: 10.1021/acs.inorgchem.9b03183

Abstract

We report a one-step, solvent-free, green approach for the mechanochemical stabilization of hybrid organic-inorganic lead halide (MAPbBr₃) perovskite quantum dots (PQDs) within perovskite metal-organic frameworks (MOFs) [MA-M(HCOO)₃] [M = Mn and Co; MA = methylammonium (CH₃NH₃⁺)]. The perovskite MOF acts as a template and source of MA cations for growing and stabilizing hybrid PQDs. The synthesis of the composite has been carried out mechanochemically, without the use of any external reagents by simply grinding the perovskite MOF with PbBr₂. MAPbBr₃@MA-Mn(HCOO)₃ composite shows high chemical stability in several solvents. Its excellent processability has been demonstrated by using it as an electrode material which shows photoelectrochemical activity in the presence of light.