期刊
NANOSCALE
卷 7, 期 45, 页码 18956-18963出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr04715c
关键词
-
类别
资金
- Progetto di ricerca PON RC [713/Ric]
- MAAT-Molecular NAnotechnology for HeAlth and EnvironmenT [PON02_00563_3316357]
- EFOR-Energia da FOntiRinnovabili (Iniziativa CNR per il Mezzogiorno) [L. 191/2009]
- Regione PUGLIA (APQ Reti di Laboratorio, project PHOEBUS) [cod. 31]
- Beyond-Nano [PON03_00362]
- SIR Two-Dimensional Colloidal Metal Dichalcogenides based Energy-Conversion Photovoltaics [2D ECO]
- Bando SIR MIUR Decreto Direttoriale [197, RBSI14-FYVD]
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 nano-structures 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 (MAPbI(3)) thin films, foreseeing the possibility of designing perovskite : polymer composites targeting diverse optoelectronic applications.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据