期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 1, 页码 854-861出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b10208
关键词
perovskite; 2D nanostructure systems; quantum dots; nanosheets; antisolvent-solvent extraction; electrospray; bandgap tuning
资金
- CSIR
- APEX Phase II program (DST) [C.Dy.No. 2609/IFD/2015-16]
- TAPSUN (CSIR)
- MNRE, Government of India
- National Science Foundation [DMR-1305913]
- Office of Integrative Activities
- Office Of The Director [1538893] Funding Source: National Science Foundation
- Engineering and Physical Sciences Research Council [EP/M023532/1] Funding Source: researchfish
- EPSRC [EP/M023532/1] Funding Source: UKRI
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 antisolventsolvent 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.
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