Proceedings of nanoGe September Meeting 2017 (NFM17)
Publication date: 20th June 2016
Chemically synthesized inorganic nanocrystals (NCs) are considered to be promising building blocks for a broad spectrum of applications including electronic, thermoelectric, and photovoltaic devices. We have synthesized monodisperse colloidal nanocubes (4-15 nm edge lengths) of fully inorganic cesium lead halide perovskites (CsPbX3, X=Cl, Br, and I or mixed halide systems Cl/Br and Br/I) using inexpensive commercial precursors [1]. Their bandgap energies and emission spectra are readily tunable over the entire visible spectral region of 410-700 nm. The photoluminescence of CsPbX3 NCs is characterized by narrow emission line-widths of 12-42 nm, wide color gamut covering up to 140% of the NTSC color standard, high quantum yields of up to 90% and also low thresholds for stimulated emission [2]. Post-synthestic chemical transformations of colloidal NCs, such as ion-exchange reactions, provide an avenue to compositional fine tuning or to otherwise inaccessible materials and morphologies [3]. Similar synthesis methodologies are well suited also for hybrid perovskite nanocrystals based on methylammonium (MA) and formamidinium cations (FA): MAPbX3 [4], FAPbBr3 [5], Cs1-xFAxPbI3 and FAPbI3 [6]. In particular, Cs- and FA-based NCs (Figure below) are highly promising for luminescence downconversion (bright and narrow emission at 530 and 640 nm), for infrared light-emitting diodes and as precursors/inks for perovskite solar cells. In this talk, we will discuss the synthesis methodologies and optical properties of these novel APbX3 NCs.
L. Protesescu et al. Nano Letters 2015, 15, 3692–3696
G. Nedelcu et al. Nano Letters 2015, 15, 5635–5640
S. Yakunin et al. Nature Communications 2015, 9, 8056.
O. Vybornyi et al. Nanoscale 2016, 8, 6278-6283
L. Protesescu et al. J. Am. Chem. Soc. 2016, 138, 14202–14205
L. Protesescu et al. ACS Nano 2017, 11, 3119–3134
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