Abstract

Hybrid halide perovskites have emerged as promising active constituents of next generation solution processable optoelectronic devices. During their assembling process perovskite components undergo very complex dynamic equilibria starting in solution and progressing throughout film formation. Finding a methodology to control and affect these equilibria responsible for the unique morphological diversity observed in perovskite films constitutes a fundamental step towards a reproducible material processability. Here we propose the exploitation of polymer matrices as cooperative assembling components of novel perovskite CH3NH3PbI3:polymer composites in which the control of the chemical interactions in solution allows a predictable tuning of the final film morphology. We reveal that the nature of the interactions between perovskite precursors and polymer functional groups probed by Nuclear Magnetic Resonance (NMR) spectroscopy and Dynamic Light Scattering (DLS) techniques allows the control of aggregates in solution whose characteristics are strictly maintained in the solid film and permits the formation of nanostructures that are inaccessible to conventional perovskite depositions. These results demonstrate how the fundamental chemistry of perovskite precursors in solution has a paramount influence on controlling and monitoring the final morphology of CH3NH3PbI3 (MAPbI3) thin films foreseeing the possibility of designing perovskite:polymer composites targeting diverse optoelectronic applications.

Autore Pugliese

• Rizzo Aurora

Tutti gli autori

• Masi S.; Rizzo A.; Aiello F.; Balzano F.; Uccello-Barretta G.; Listorti A.; Gigli G.; Colella S.

Titolo volume/Rivista

Nanoscale

Anno di pubblicazione

2015

ISSN

2040-3372

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

Non Disponibile

Ultimo Aggiornamento Citazioni

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Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile