Nanocrystalline/microcrystalline materials based on lead-halide units

Papavassiliou, George C.; Pagona, Georgia; Karousis, Nikolaos; Mousdis, George A.; Koutselas, Ioannis; Vassilakopoulou, Anastasia

doi:10.1039/c2jm15783g

Cited by 71 publications

(78 citation statements)

References 55 publications

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“…After grinding, they give a powder with a strong green luminescence [6,7,10,11]. This is due to the formation of (SC)PbBr 3 particles [10,11], and the strong luminescence (arround 520 nm ) is arising from the free-excitons of inorganic moiety [10]. Also, it has been discovered that the intensity of this excitonic band and luminescence of organic moieties depend on the nature of BC [9, 17-20, 22, 23].…”

Section: Introductionmentioning

confidence: 99%

“…They can be prepared from their solutions or from melts in single crystal form or in particulate forms (grinding powders, suspensions in several solvents, and dispersions in several matrices) [6,7,[30][31][32][33][34][35][36][37]. In the particulate forms, the products of the reactions are in equilibrium with their precursors [8][9][10], e.g. as following:…”

Section: Introductionmentioning

confidence: 99%

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Effects of organic moieties on the photoluminescence spectra of perovskite-type tin bromide based compounds

Papavassiliou

Vidali

Pagona

et al. 2015

Journal of Physics and Chemistry of Solids

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of organic moieties on the photoluminescence spectra of perovskite-type tin bromide based compounds

Papavassiliou

Vidali

Pagona

et al. 2015

Journal of Physics and Chemistry of Solids

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“…51 Micro-crystals and NCs comprising layered quasi-2D perovskites in the form of A 2 PbX 4 , A 4 PbX 6 and A(A′) 2 Pb 2 X 7 were also reported to be luminescent. [52][53][54] Chen et al 55 synthesized nano-and micro-sized MAPbI 3 perovskite crystals by using mild heating of MAI and PbI 2 in different polar solvents. By using solvents with different polarities, MAPbI 3 NCs of different shapes (cubes, rods and hexagons) were obtained.…”

Section: Synthesis Of Perovskite Ncsmentioning

confidence: 99%

Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications

et al. 2016

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Lead halide perovskite nanocrystals (NCs) are receiving a lot of attention nowadays, due to their exceptionally high photoluminescence quantum yields reaching almost 100% and tunability of their optical band gap over the entire visible spectral range by modifying composition or dimensionality/size. We review recent developments in the direct synthesis and ion exchange-based reactions, leading to hybrid organic-inorganic (CH 3 NH 3 PbX 3 ) and all-inorganic (CsPbX 3 ) lead halide (X = Cl, Br, I) perovskite NCs, and consider their optical properties related to quantum confinement effects, single emission spectroscopy and lasing. We summarize recent developments on perovskite NCs employed as an active material in several applications such as light-emitting devices, solar cells and photodetectors, and provide a critical outlook into the existing and future challenges.

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“…The inorganic part is usually the semiconductor, composed of a metal halide unit network, while the organic part is usually composed of electrooptically inactive amines. In the past, a wide set of combinations of inorganic and organic parameters have led to HOIS with a variety of properties such as controlled absorption in the whole spectral ultraviolet-visible region [2], thin film transistor gate materials comparable to amorphous Si [23][24][25] or energy transfer optical phenomena, for example see [26][27][28] and refs. therein.…”

Section: Introductionmentioning

confidence: 99%

Mixtures of quasi-two and three dimensional hybrid organic-inorganic semiconducting perovskites for single layer LED

Vassilakopoulou

Papadatos

Zakouras

et al. 2017

Journal of Alloys and Compounds

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New blends of simply synthesized quasi two-dimensional (quasi-2D) hydrophobic perovskite semiconductors, employed in high performance light emitting diodes (LEDs) which function due to excitonic energy transfer effects, are reported. These materials are self-assembled blends of 2D, quasi-2D and three-dimensional (3D) hybrid organic-inorganic semiconductors HOIS blends manifest energy transfer effects, where adjacent nanoparticles of different band gap energies (E g ) transfer optical energy to those with the lowest E g ; the suggested light emission mechanism here. LED fabrication is attained via a single deposition of the hydrophobic mixture, reducing device complexity, cost and degradability. LED's diodic behavior is observed even under light albeit its photovoltaic and photoconductive quasi-2D and 3D components. LED devices exposed for over than four months under adverse laboratory conditions, showed stable light emission. Further research on this class of quasi-2D/3D HOIS mixtures is expected to lead to novel quantum electronic devices.2

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Nanocrystalline/microcrystalline materials based on lead-halide units

Cited by 71 publications

References 55 publications

Effects of organic moieties on the photoluminescence spectra of perovskite-type tin bromide based compounds

Effects of organic moieties on the photoluminescence spectra of perovskite-type tin bromide based compounds

Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications

Mixtures of quasi-two and three dimensional hybrid organic-inorganic semiconducting perovskites for single layer LED

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