Hybrid Perovskite Quantum Nanostructures Synthesized by Electrospray Antisolvent–Solvent Extraction and Intercalation

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• 作者：Rounak Naphade ; Satyawan Nagane ; G. Shiva Shanker ; Rohan Fernandes ; Dushyant Kothari ; Yuanyuan Zhou ; Nitin P. Padture ; Satishchandra Ogale
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：January 13, 2016
• 年：2016
• 卷：8
• 期：1
• 页码：854-861
• 全文大小：628K
• ISSN：1944-8252

文摘

Perovskites based on organometal lead halides have attracted great deal of scientific attention recently in the context of solar cells and optoelectronic devices due to their unique and tunable electronic and optical properties. Herein, we show that the use of electrospray technique in conjunction with the antisolvent–solvent extraction leads to novel low-dimensional quantum structures (especially 2-D nanosheets) of CH₃NH₃PbI₃- and CH₃NH₃PbBr₃-based layered perovskites with unusual luminescence properties. We also show that the optical bandgaps and emission characteristics of these colloidal nanomaterials can be tuned over a broad range of visible spectral region by compositional tailoring of mixed-halide (I- and Br-based) perovskites.