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Search for "photoluminescence decay" in Full Text gives 3 result(s) in Beilstein Journal of Nanotechnology.

Lead-free hybrid perovskites for photovoltaics

Oleksandr Stroyuk

Beilstein J. Nanotechnol. 2018, 9, 2209–2235, doi:10.3762/bjnano.9.207

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Figure 1: Temporal evolution of (a) the power conversion efficiency of lead-HP-based solar cells and (b) the ...

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Figure 2: Schemes of conventional (a) and inverted (b) HP-based solar cell; energy diagrams of selected Sn-ba...

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Figure 3: (a,b) Internal photon-to-current conversion efficiency (IPCE) spectra of solar cells comprising a s...

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Figure 4: (a,b) Photocurrent density–voltage curves recorded for the solar cells based on MASnI₃ HPs (a) and ...

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Figure 5: (a) Scheme of a possible mechanism of Sn-based HP transformation upon reaction with hydrazine; (b,c...

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Figure 6: (a) Photographs of HP films produced from different CsSnI₃₋_xBr_x and CsSnBr₃₋_xCl₃ compounds (bandgap...

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Figure 7: TEM (a–h) and STEM (j) images of CsSnI₃ nanocrystals (NCs): (a) Cs₂SnI₆ in the form of NCs (b), nan...

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Figure 8: (a) Absorption spectra of (CH₃(CH₂)₃NH₃)₂(CH₃NH₃)_n₋₁Sn_nI₃_n₊₁ homological HPs; (b) energy level alig...

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Figure 9: (a) Absorption spectra of AGeI₃ HPs with different cations; (b) energy level alignment in solar cel...

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Figure 10: Structure (a), absorption spectra (b) and photographs (c) of (CH₃NH₃)₂CuCl_xBr₄₋_x HPs of different c...

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Figure 11: (a) Cyclic photoresponse of a red light photodetector based on CsBi₃I₁₀ HP with a freshly prepared ...

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Figure 12: Schematic structure of MASb₂Cl_xI₉₋_x HP (a) and current–voltage characteristics of a solar cell base...

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Figure 13: Schematic of the influence of the cation size on the structure of A₃Sb₂I₉ (A = Cs, Rb). Reprinted a...

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Figure 14: Energy diagram (a), normalized IPCE tested for a period of 30 days (b) as well as current–voltage c...

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Figure 15: (a) Evolution of the crystal structure from CsPbCl₃ to Cs₂AgInCl₆ HP; (b) Crystal structure of Cs₂A...

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Figure 16: Scheme of the synthesis of Cs₂AgBiX₆ NCs (a–c) and TEM images of Cs₂AgBiCl₆ (d), Cs₂AgBiBr₆ (e), an...

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Review

Published 21 Aug 2018

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Changes of the absorption cross section of Si nanocrystals with temperature and distance

Michael Greben,
Petro Khoroshyy,
Sebastian Gutsch,
Daniel Hiller,
Margit Zacharias and
Jan Valenta

Beilstein J. Nanotechnol. 2017, 8, 2315–2323, doi:10.3762/bjnano.8.231

Si NCs cannot be considered as independent on experimental conditions and sample parameters. Keywords: absorption cross section; average lifetime; nanocrystal distance; photoluminescence decay; silicon nanocrystals; Introduction For decades, silicon – an abundant, nontoxic material with high

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Figure 1: Time-resolved PL signals of multilayer samples (barrier layer (BL) is 1 nm (a) or 2.8 nm (b)) detec...

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Figure 2: a) PL intensity under continuous-wave excitation as a function of the excitation photon flux for sa...

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Figure 3: The extracted recombination rates γ_ON = 1/τ_ON and γ_PL = 1/τ_PL at λ_det = 830 nm of the ML sample wit...

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Figure 4: The dependence of (a) extracted PL lifetime τ(x) and calculated ACS σ(x) and (b) the product σ(x)·η(...

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Figure 5: The variation of the ACS σ(T) of ML sample with 2.8 nm barrier thickness (circles and diamonds) and...

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Full Research Paper

Published 06 Nov 2017

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Inorganic Janus particles for biomedical applications

Isabel Schick,
Steffen Lorenz,
Dominik Gehrig,
Stefan Tenzer,
Wiebke Storck,
Karl Fischer,
Dennis Strand,
Frédéric Laquai and
Wolfgang Tremel

Beilstein J. Nanotechnol. 2014, 5, 2346–2362, doi:10.3762/bjnano.5.244

processes, namely the two individual photoluminescence decays of Au and MnO@SiO2-Atto495 [39] (Figure 17). However, the fluorescence of Atto495 is quenched partially when bound to MnO@SiO2 and the resulting photoluminescence decay described by a bi-exponential function yields the photoluminescence lifetime

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Figure 1: Illustrations of the transition from isotropic to anisotropic particles.

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Figure 2: a) Evolution of the PL-peak position, b) schematic representation, and c) evolution of the PL-quant...

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Figure 3: Summary of synthetic routes towards organic Janus particles. (a) Directed functionalization after i...

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Figure 4: (a) Schematic representation of bimetallic Janus particles at the hexane–water interface (gold: gol...

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Figure 5: (A) SEM top view image of a typical kaolinite platelet (left), schematic picture of kaolinite plate...

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Figure 6: a) Proposed photocatalytic process for efficient hydrogen generation using the Janus Au@TiO₂ nanost...

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Figure 7: a) UV–vis spectra of Au@Fe₃O₄ nanoparticles corresponding to schematic representations in b). The s...

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Figure 8: TEM bright field images of Au nanoparticles with different diameters (a) 4 nm, (b) 8 nm, and (c) 15...

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Figure 9: TEM bright field images of Au@MnO and Au@Fe₃O₄ heterodimer-nanoparticles: (a) 9@18 nm Au@MnO, (b) 4...

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Figure 10: Domain size dependency of absorption maximum of Au@MnO nanoparticles determined by UV–vis spectrosc...

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Figure 11: UV–vis spectra of Au (solid), Au@MnO (dashed), and Au@Fe₃O₄ (dotted) nanoparticles normalized to th...

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Figure 12: Schematic representation of the formation of Cu@Fe₃O₄ heterodimers with different morphologies base...

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Figure 13: Synthetic protocol of the synthesis of Co@Fe₂O₃ heterodimer and phase pure CoFe₂O₄ nanoparticles (t...

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Figure 14: CLSM images of HeLa cells co-incubated with Au@MnO@SiO₂-Atto495 Janus particles (green) for 24 h at...

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Scheme 1: Seed-mediated synthesis of Au@MO_x heterodimers, subsequent encapsulation with silica and functional...

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Figure 15: TEM micrographs of silica encapsulated Janus particles; (a,b) Au@MnO@SiO₂ (10@20 nm), and (c,d) Au@...

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Figure 16: Dynamic light scattering results of Au (red dots), Au@Fe₃O₄ (blue dots) dispersed in n-heptane, and...

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Figure 17: (a) Time-resolved fluorescence spectra of Au nanoparticles (green), Atto495 (orange), MnO@SiO₂ (red...

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Figure 18: Labelfree LC-MS Analysis of the hard protein corona of Fe₃O₄@SiO₂, MnO@SiO₂, and Au@MnO@SiO₂ nanopa...

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Album

Review

Published 05 Dec 2014

Full text

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