Work

Tunable Emission and Stability of MAPbI3 Nanocrystals by Room-temperature Ligand-assisted Reprecipitation with Nonpolar Solvent

Year: 2025

Type: article

Abstract: In this paper, we present an innovative room-temperature ligand-assisted reprecipitation (LARP) strategy, in which the introduction of diethyl ether plays a crucial role in the synthesis of MAPbI 3 nanocrystals.Diethyl ether is a weakly polar solvent.Its introduction regulates nucleation and early-stage crystal growth.As a result, enhanced homogeneous nucleation and smaller nanocrystals are obtained.By tuning solvent polarity and optimizing the precursor-toantisolvent ratio, the addition of diethyl ether not only reduces crystal size and enhances the quantum confinement effect, thereby inducing a pronounced spectral blue shift and enabling emission tunability across the 500-700 nm range, but also suppresses lattice defect formation and passivates surface states, effectively minimizing nonradiative carrier recombination.Consequently, the incorporation of diethyl ether markedly prolongs the average carrier lifetime, improves precursor solution stability, and enhances the overall durability of the nanocrystals, achieving stable light emission.This approach significantly expands the potential of MAPbI 3 nanocrystals in optoelectronic applications and provides an effective pathway toward multicolortunable and long-term stable light emission.

Source: Sensors and Materials

DOI: 10.18494/sam6083

Authors: Juin J. Liou, Yu-Sen Huang, Tzu An Ho, Chien-Jung Huang

Institutions: Shandong University of Science and Technology, National University of Kaohsiung

Language: English

Topic: Perovskite Materials and Applications

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $748

Funders: National Sun Yat-sen University, Sun Yat-sen University, National Science and Technology Council