Fig. 1: Effects of neat ester antisolvent treatment on PQDs. | Nature Communications

Fig. 1: Effects of neat ester antisolvent treatment on PQDs.

From: Enriching conductive capping by alkaline treatment of perovskite quantum dots towards certified 18.3%-efficient solar cells

Fig. 1

a Molecular structures of the alternative ester antisolvents used in this work. Light absorption spectra (b), normalized PL spectra (c), FT-IR spectra (d), and conductivity (e) of as-cast, MeOAc-, MeBz-, EtOAc-, and EtCa-based PQD solid films. The Inset in (e) shows the device architecture for conductivity measurement. f Schematic illustration of ligand exchange during ester antisolvent rinsing of PQD solid films. g PCE statistics of MeBz-, EtOAc-, and EtCa-based PQDSCs. For each condition, 20 devices fabricated from different batches were applied for statistics.

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