|
High-Throughput Evaluation of Emission and Structure in Reduced-Dimensional Perovskites
H. Anwar, A. Johnston, S. Mahesh, K. Singh, Z. Wang, D. A. Kuntz, I. Tamblyn, O. Voznyy, G.G. Prive, and E.H. Sargent ACS Central Science, 8, 5, 571-580 (2022) High-throughput experimentation (HTE) seeks to accelerate the exploration of materials space by uniting robotics, combinatorial methods, and parallel processing, and is particularly relevant to metal halide perovskites (MHPs) -- a diverse class of optoelectronic materials with a large chemical space. In this work, we develop an HTE workflow to synthesize and characterize light-emitting MHP single crystals, generating the first reported dataset of experimentally derived photoluminescence spectra for low-dimensional MHPs. We leverage the accelerated workflow to optimize the synthesis and emission of a new MHP, methoxy-phenethylammonium lead iodide ((4-MeO-PEAI)2-PbI2). By synthesizing 16,000 MHP single crystals and measuring their photoluminescence, we systematically study the effects of synthesis parameters and compositional engineering on the emission intensity of 54 distinct MHPs, achieving an acceleration factor of more than 100 times over previously reported HTE MHP synthesis and characterization methods. |
