Fig. 5: Light emission from C8C12-PEA-capped FAPbBr3 NCs on the ensemble and single dot levels.
From: Designer phospholipid capping ligands for soft metal halide nanocrystals
a–d, Highlighted optical properties of FAPbBr3 NCs in an ensemble. Films of FAPbBr3 NCs of various sizes demonstrate equally high PL QY and tunable green emission (a). High PL QY is retained in thick films (b) and is not influenced by film storage in ambient conditions for at least 90 days (c). PL QY of greater than 90% is preserved on approximately 1,000-fold dilution of C8C12-PEA-capped NCs with octane, whereas a pronounced drop is observed for C8C12-PC- and OAm-capped NCs (d), indicative of dilution-induced surface degradation. e–i, Optical properties of FAPbBr3 NCs at the single-particle level. Single OAm-capped NCs exhibit pronounced blinking (e), while single PEA-capped NCs exhibit high brightness and suppressed PL blinking (f), good PL stability (g), narrow PL linewidth (full-width at half-maximum (FWHM)) (h) and high single-photon purity (i). PL QY measurement error in (d) is ±1%. a.u., arbitrary unit. Scale bar, 10 mm.
