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Figure 1. Ligand compensation
process for CsPbBr 3 QDs by TOP-CsBr ligand pair. (a) Schematic
diagram of LC for CsPbBr 3 QDs. (b) The photographs (natural light)
and (c) storage stability of CsPbBr 3 QD ink compensated by different
concentration of ligands. (d) AFM images of CsPbBr 3 QD films
compensated by different concentration of ligands. Figure 2. The
interaction between LC ligands and CsPbBr 3 QDs. (a) FTIR and (b) 31 P
NMR enlarged spectra of the TOP, LC-2 and original QD films. (c-e) High
resolution XPS spectra of P 2p, Pb 4f, and Br 3d for original and LC-2 QDs. (f)
Statistical Br/Pb atomic ratio of original and LC-2 QDs. Figure 3. The LC
strategy achieves efficient exciton recombination. (a) Steady state PL spectra and
(b) Photographs (ultraviolet lamp excitation) of the original and LC-2 QD
films. (c) TRPL delay curve of the original and LC-2 QD films. (d)
High-binding-energy secondary electron cutoff and valence-band edge regions of
original and LC-2 QD films mea
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