Perovskite nanocrystals (PNCs) have attracted considerable interest as next-generation display materials owing to their outstanding photoluminescence quantum yield (PLQY), wide color gamut, and narrow emission bandwidth. However, because of their weak stability against solvents, the patterning of PNCs remains a challenge. In this study, we developed functional organic ligands (AzL1-Th and AzL2-Th) for the fine pixelation of PNC displays. Functional ligands containing photocurable azide moieties exhibit good charge transport properties and fast and efficient photocrosslinking performance, while maintaining a high PLQY. Moreover, the crosslinked PNC light emitting diodes were successfully demonstrated using AzL1-Th. These results suggest the high potential of photocurable ligands for the micro-patterning of PNC films without film damages.
This work was supported by the Nano Material Technology Development Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF-2021M3H4A1A02049006 and NRF-2022H1D3A3A01077343) and by a grant from the Priority Research Centers Program (2019R1A6A1A11051471) funded by the NRF.
