Exciton annihilation in one-dimensional inorganic crystals: power dependent luminescence decay curves from (CH3)4NMnCl3 (TMMC), (CH3)4 NMnBr3 (TMMB) and CsMnBr3 (CMB)

Blakley, R. L.; Martínez, Carlos E. Rodríguez; Herman, Michael F.; McPherson, Gary L.

doi:10.1016/0301-0104(90)80057-5

Cited by 14 publications

(3 citation statements)

References 19 publications

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“…The long lifetime with microsecond time scale is similar to CsMnBr 3 single crystals. [28,29] We also noted that Bakrs et al recently reported CsMnBr 3 NCs with picosecond lifetime. [30] This may be due to PL lifetime of the Mn 2+ d-d transitions is sensitive to the Mn-Mn distance, and the PL lifetime can be tuned from a few nanoseconds to milliseconds depending upon the Mn-Mn distance.…”

Section: Methodssupporting

confidence: 55%

Phase Engineering of Cesium Manganese Bromides Nanocrystals with Color‐Tunable Emission

et al. 2021

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For display applications, it is highly desirable to obtain tunable red/green/blue emission. However, lead‐free perovskite nanocrystals (NCs) generally exhibit broadband emission with poor color purity. Herein, we developed a unique phase transition strategy to engineer the emission color of lead‐free cesium manganese bromides NCs and we can achieve a tunable red/green/blue emission with high color purity in these NCs. Such phase transition can be triggered by isopropanol: from one dimensional (1D) CsMnBr3 NCs (red‐color emission) to zero dimensional (0D) Cs3MnBr5 NCs (green‐color emission). Furthermore, in a humid environment both 1D CsMnBr3 NCs and 0D Cs3MnBr5 NCs can be transformed into 0D Cs2MnBr4⋅2 H2O NCs (blue‐color emission). Cs2MnBr4⋅2 H2O NCs could inversely transform into the mixture of CsMnBr3 and Cs3MnBr5 phase during the thermal annealing dehydration step. Our work highlights the tunable optical properties in single component NCs via phase engineering and provides a new avenue for future endeavors in light‐emitting devices.

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Section: Methodssupporting

confidence: 55%

Phase Engineering of Cesium Manganese Bromides Nanocrystals with Color‐Tunable Emission

et al. 2021

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“…Exciton luminescence has been previously used to investigate low-dimensional reaction kinetics: By accurate measurements on the fusion of excitons, anomalous behavior was observed in an effectively one-dimensional system [25,26]. We expect that our prediction of a strong violation of the LMA could be revealed with similar kinds of experiments for three-dimensional systems.…”

Section: γ(2)supporting

confidence: 57%

Validity of the Law of Mass Action in Three-Dimensional Coagulation Processes

Winkler

Frey

2012

Phys. Rev. Lett.

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Diffusion-limited reactions are studied in detail on the classical coalescing process. We demonstrate how, with the aid of a recent renormalization group approach, fluctuations can be integrated systematically. We thereby obtain an exact relation between the microscopic physics (lattice structure and particle shape and size) and the macroscopic decay rate in the law of mass action. Moreover, we find a strong violation of the law of mass action. The corresponding term in the kinetic equations originates in long-wavelength fluctuations and is a universal function of the macroscopic decay rate.

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“…We therefore expect that our results are relevant for a range of experimental systems and theoretical models and believe they will encourage further work on the fundamental implications of fluctuations on non-equilibrium processes. The strong impact of fluctuation on the coagulation process below the critical dimension has already been probed by experimental studies on effectively one-dimensional exciton dynamics [53,54]. Similar experiments on excitons which disperse in all three spacial directions [55] may be suitable for analysis of our predictions of a violation of the LMA in three dimensions.…”

Section: Discussionmentioning

confidence: 69%

Long-range and many-body effects in coagulation processes

Winkler

Frey

2013

Phys. Rev. E

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We study the problem of diffusing particles which coalesce upon contact. With the aid of a nonperturbative renormalization group, we first analyze the dynamics emerging below the critical dimension two, where strong fluctuations imply anomalously slow decay. Above two dimensions, the long-time, low-density behavior is known to conform with the law of mass action. For this case, we establish an exact mapping between the physics at the microscopic scale (lattice structure, particle shape and size) and the macroscopic decay rate in the law of mass action. In addition, we identify a term violating this classical law. It originates in long-range and many-particle fluctuations and is a simple, universal function of the macroscopic decay rate.

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Exciton annihilation in one-dimensional inorganic crystals: power dependent luminescence decay curves from (CH3)4NMnCl3 (TMMC), (CH3)4 NMnBr3 (TMMB) and CsMnBr3 (CMB)

Cited by 14 publications

References 19 publications

Phase Engineering of Cesium Manganese Bromides Nanocrystals with Color‐Tunable Emission

Phase Engineering of Cesium Manganese Bromides Nanocrystals with Color‐Tunable Emission

Validity of the Law of Mass Action in Three-Dimensional Coagulation Processes

Long-range and many-body effects in coagulation processes

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