Electroluminescence

Gumlich, H.‐E.; Zeinert, A.; Mauch, R.H.

doi:10.1007/978-1-4615-5361-8_6

Cited by 7 publications

(6 citation statements)

References 113 publications

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“…No other diamond type shows this property. Occasionally, type IIb diamonds will also emit flashes or sparks of blue light (known as electroluminescence; Gumlich et al, 1998) when tested with a conductometer in a dark room.…”

Section: Inclusions and Strain Patterns: Gemologicalmentioning

confidence: 99%

The "Type" Classification System of Diamonds and Its Importance in Gemology

Breeding¹,

Shigley²

2009

Gems & Gemology

113

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Section: Inclusions and Strain Patterns: Gemologicalmentioning

confidence: 99%

The "Type" Classification System of Diamonds and Its Importance in Gemology

Breeding¹,

Shigley²

2009

Gems & Gemology

113

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“…In IIa-IIIb 2 -S 4 compounds, Eu 2+ ions substitute for IIa cations, and the splitting of the Eu 2+ 5d orbital is determined by the IIa and IIIb elements. The general explanation is, that the splitting of the Eu 2+ 5d orbitals increases with the decreasing size of the IIa element and with the increasing size of the IIIb element [5]. These rules depend on the ionic nature of atomic bond between the Eu 2+ ion and S ion.…”

Section: Eu 2+ Ion Doped Iia-iiib 2 -S 4 Phosphors 21 5d-4f Transitimentioning

confidence: 99%

“…The Mn ion has a half-occupied (3d) 5 shell. The luminescence of the Mn 2+ ion is due to a (3d) 5 intra-shell transition.…”

Section: Mn 2+ Luminescencementioning

confidence: 99%

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36.3: Invited Paper: Color Phosphors for Inorganic Electroluminescent Devices

Miura

2004

Symp Digest of Tech Papers

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Significant progress in the performance and commercialization of full‐color thin‐film electroluminescent (EL) displays has been achieved. This is due to the remarkable progress made in the performance of existing EL phosphors, development of new phosphor materials, and design of new EL phosphor structures. In this paper, I describe the progress in the development of EL phosphor materials based on systematical study of Eu and Mn ion doped ternary compounds. Highly saturated phosphor that realizes full color display has been reported.

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“…The excellent luminescence properties of bulk ZnS/Mn are well-known for more than 50 years and are employed in TFEL displays etc. [1]. The photoluminescence (PL) spectrum of ZnS/Mn alloys is dominated by the internal Mn 3 d 5 luminescence band around 2.15 eV in the yellow range of the visible spectrum.…”

Section: Introductionmentioning

confidence: 99%

Defect induced changes on the excitation transfer dynamics in ZnS/Mn nanowires

et al. 2011

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Transients of Mn internal 3d5 luminescence in ZnS/Mn nanowires are strongly non-exponential. This non-exponential decay arises from an excitation transfer from the Mn ions to so-called killer centers, i.e., non-radiative defects in the nanostructures and is strongly related to the interplay of the characteristic length scales of the sample such as the spatial extensions, the distance between killer centers, and the distance between Mn ions. The transients of the Mn-related luminescence can be quantitatively described on the basis of a modified Förster model accounting for reduced dimensionality. Here, we confirm this modified Förster model by varying the number of killer centers systematically. Additional defects were introduced into the ZnS/Mn nanowire samples by irradiation with neon ions and by varying the Mn implantation or the annealing temperature. The temporal behavior of the internal Mn2+ (3d5) luminescence is recorded on a time scale covering almost four orders of magnitude. A correlation between defect concentration and decay behavior of the internal Mn2+ (3d5) luminescence is established and the energy transfer processes in the system of localized Mn ions and the killer centers within ZnS/Mn nanostructures is confirmed. If the excitation transfer between Mn ions and killer centers as well as migration effects between Mn ions are accounted for, and the correct effective dimensionality of the system is used in the model, one is able to describe the decay curves of ZnS/Mn nanostructures in the entire time window.

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Electroluminescence

Cited by 7 publications

References 113 publications

The "Type" Classification System of Diamonds and Its Importance in Gemology

The "Type" Classification System of Diamonds and Its Importance in Gemology

36.3: Invited Paper: Color Phosphors for Inorganic Electroluminescent Devices

Defect induced changes on the excitation transfer dynamics in ZnS/Mn nanowires

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