Metadata File for: Abfalterer, A.; Zhou, Y.J.; Jayabalan, R.; Holzinger, J.; Rescher, L.M.; Hooijer, R.; Ullrich, A.; Henke, N.A.; Plangger, I.; Aydin, E.; Nickel, B.; Schütz, A.K.; Brütting, W.; Urban, A.S. Room-Temperature Synthesis of Strongly Confined Lead Halide Perovskite Quantum Dots. Accepted in Advanced Functional Materials. Acknowledgements: This research was funded in whole or in part by the Austrian Science Fund (FWF) 10.55776/J4863. For the purpose of open access, the author has applied a CC BY public copyright license to any Author Accepted Manuscript (AAM) version arising from this submission. This work was supported by the European Research Council Horizon 2020 through the ERC Grant Agreement PINNACLE (759744), by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) EXC 2089/1‐390776260 (Excellence Cluster ‘e‐conversion’) and by the Bavarian State Ministry of Science, Research and Arts through the grant ‘Solar Technologies go Hybrid (SolTech)’. R.J. and W.B. acknowledge funding by Deutsche Forschungsgemeinschaft (DFG) within SPP2196 (project no. 424708673). R.H. and E.A. acknowledge funding by the European Research Council (ERC) under the European Union's Horizon Europe Research and Innovation Program (INPERSPACE, Grant Agreement No. 101077006). TEM measurements were carried out at the ELMICAU (Electron microscopy center at the University of Augsburg), funded by the Deutsche Forschungsgemeinschaft (DFG) – Project‐ID 540566574. The following data files are deposited in this Open Data LMU entry and correspond to the published data as follows: Figure 1b-d Figure1.csv: contains absorbance and PL spectra data (panel b), data points for the evolution of absorbance and PL peak energy as a function of time (panel c), and data points for the evolution of PLQY and PL FWHM as a function of time (panel d) Figure 2a-c Figure2a.png: the TEM image plotted in Figure 2a; the scale bar corresponds to 50 nm Figure2.csv: contains SAXS data and the corresponding fit data (panel b), and powder XRD data including Pnma, P4/mbm, Pm-3m reference data (panel c) Figure 2d Figure2dright_31P_400_odpea_qd_comp.svg: right panel 2d) Julian_nmr_data/31P/NP_tol/2: contains 31P NMR measurement data of QDs Julian_nmr_data/31P/ODPEA_tol/2: contains 31P NMR measurement data of ODPEA Figure2dleft_1H_800_odpea_qd_comp.svg: left panel 2d) Julian_nmr_data/1H/20240116_NP_tol/1: contains 1H NMR measurement data of QDs Julian_nmr_data/1H/20240116_ODPEA_tol/1: contains 1H NMR measurement data of ODPEA Figure 3 Figure3.csv: contains the in situ PL spectra data (panel a), and the corresponding data points for the timely evolution of the PL Intensity, PL peak position, and PL FWHM (panel b) Figure 4 Figure4.csv: contains the absorbance and PL spectra data for the concentration series with OD-PEA (panel a), the corresponding data points for the PL peak energy and PL FWHM as a function of OD-PEA concentration (panel b), and the corresponding data points for the PLQY as a function of OD-PEA concentration (panel c); further, the sheet contains the absorbance and PL spectra data for the temperature series (panel d), the corresponding data points for the PL peak energy and PL FWHM as a function of temperature (panel e), and the corresponding data points for the PLQY as a function of temperature (panel f) Figure 5 Figure5.csv: contains the absorbance and PL spectra data for the exchange series with PbI2 and PbCl2 solution (panel a), and the corresponding data points for the PL peak energy, PL FWHM, and PLQY as a function of added volume of PbI2/PbCl2 exchange solution (panel b) Figure 6 Figure6.csv: contains the EL spectrum data (panel c), the JVL curve data points (panel d), and the data for the EQE vs. current density curve (panel e) Figure S1 FigureS1.csv: contains the absorbance spectrum data for samples without and with 10 µL enhancement solution measured on day 1 and day 8 (panel a), the PL spectrum data for samples without and with 10 µL enhancement solution measured on day 1 and day 8 (panel b), and the PLQY data points for samples without, with 5, 10, 15, 20, and 25 µL of enhancement solution measured on day 1, 5, and 8 (panel c) Figure S2 FigureS2.csv: contains the data underlying the Whisker plot Figure S3 FigureS3a.png: the TEM image plotted in Figure S3a; the scale bar corresponds to 50 nm FigureS3b.png: the TEM image plotted in Figure S3b; the scale bar corresponds to 10 nm Figure S4a FigureS4a_1H_800_qd.svg Julian_nmr_data/1H/20240116_NP_tol/1: contains 1H NMR measurement data of QDs FigureS4a_1H_800_odpea.svg Julian_nmr_data/1H/20240116_ODPEA_tol/1: contains 1H NMR measurement data of ODPEA FigureS4a_1H_800_olac.svg Julian_nmr_data/1H/20240117_oleicacid_tol/1: contains 1H NMR measurement data of oleic acid FigureS4a_1H_800_olam.svg Julian_nmr_data/1H/20240117_oleylamine_tol/1: contains 1H NMR measurement data of oleylamine Figure S4b FigureS4b_31P_400_1H31P2D_odpea.svg Julian_nmr_data/31P/ODPEA_tol/24: contains 2D 31P NMR measurement data of ODPEA Figure S5 FigureS5a_p1_main_resonance.svg: relaxation dispersion curve of the ODPEA main resonance FigureS5b_p2_impurity.svg: relaxation dispersion curve of the ODPEA impurity FigureS5c_p3_QD.svg: relaxation dispersion curve of the ODPEA-QD-suspension Julian_nmr_data/raw_data/: contains experimental and fit raw data of the relaxation dispersion curves Julian_nmr_data/31P/ODPEA_tol_T1T2: contains 31P T1,T2 and RD measurement data of ODPEA Julian_nmr_data/31P/NP_tol_T1T2: contains 31P T1,T2 and RD measurement data of QDs Figure S6 FigureS6_od-pea_t1t2_comp_QD.svg: 31P T1 and T2 relaxation times estimations due to Redfield theory Julian_nmr_data/31P/NP_tol/2: contains 31P NMR measurement data of QDs Julian_nmr_data/31P/ODPEA_tol/2: contains 31P NMR measurement data of ODPEA Figure S7 FigureS7.csv: contains the data points of PL intensity, PL peak position, and PL FWHM as a function of time for the in-situ measurement of samples with 0, 5.36, and 10.7 mM OD-PEA Figure S8 FigureS8.csv: contains the absorbance and PL spectra data for the control samples (panel a), the corresponding data points for the PL peak energy and PL FWHM as a function of the OLA/OA ratio (panel b), and the corresponding data points for the PLQY as a function of the OLA/OA ratio (panel c) Figure S9 FigureS9.csv: contains the absorbance and PL spectra data for the MeOH volume series (panel a), the corresponding data points for the PL peak energy and PL FWHM as a function of the MeOH volume (panel b), and the corresponding data points for the PLQY as a function of the MeOH volume (panel c) Figure S10 FigureS10.csv: contains the absorbance and PL spectra data for the Cs/Pb ratio series (panel a), the corresponding data points for the PL peak energy and PL FWHM as a function of the Cs/Pb ratio (panel b), and the corresponding data points for the PLQY as a function of the Cs/Pb ratio (panel c) Figure S11 FigureS11.csv: contains the absorbance and PL spectra data for the CsPbBr3 QD sample and the sample exchanged with I (panel a), the absorbance and PL spectra data for the CsPbBr3 QD sample and the sample exchanged with Cl (panel b), and the corresponding data points for the PLQY of the four samples (panel c) Figure S12 FigureS12.csv: contains the absorbance and PL spectra data for the washed and unwashed CsPbBr3 QD samples (panel a), and the corresponding data points for the PL FWHM and PLQY as a function of PL peak position (panel b) Figure S13 FigureS13.csv: contains the PL spectra data for a CsPbBr3 QD sample and the EL spectra data of the corresponding LED Figure S14 FigureS14.csv: contains the EQE statistics collected from multiple LEDs