Concentration effect of Mn2+ on the photoluminescence of ZnS:Mn nanocrystals

Peng, Wenqin; Qu, Shengchun; Cong, Guangwei; Wang, Z.G.

doi:10.1016/j.jcrysgro.2005.02.066

Cited by 75 publications

(44 citation statements)

References 22 publications

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“…The 8,8,8,8,14 parameters was chosen for the Coulomb overlap, Coulomb penetration, exchange overlap, first exchange pseudo-overlap, and second exchange pseudo overlap parameters, respectively. The integration in the reciprocal space was performed by sampling the Brillouin zone with an 6x6x6 pack-Monkhorst.…”

Section: Model System and Computational Methodsmentioning

confidence: 99%

“…It is an important II-VI semiconductor material with a wide band gap (about 3.72 eV for the cubic zinc blende phase, and 3.77 eV for the wurtzite phase in bulk materials at 300 K) [11][12][13]. By doping with different metal ions (including transition metals and rare earths), it is possible to realize full-color luminescence in the UV-visible region [14]. Thus, a number of publications concerning well-formed ZnS nanocrystals doped with various types of impurities have appeared in recent years [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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Europium doped zinc sulfide: a correlation between experimental and theoretical calculations

et al. 2014

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This paper presents the correlation among electronic and optical property effects induced by the addition of different concentrations of europium (Eu3+) in zinc sulfide (ZnS) by microwave-assisted solvothermal (MAS) method. A shift of the photoluminescence (PL) emission was observed with the increase of Eu3+. The periodic DFT calculations with the B3LYP hybrid functional were performed using the CRYSTAL computer code. The UV-vis spectra and theoretical results indicate a decrease in behavior of the energy gap as a function of dopant concentration. Therefore, new localized states are generated in the forbidden band gap region, the new states increase the probability of less energy transitions which may be responsible for a red shift in the PL bands spectrum.

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Section: Model System and Computational Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Europium doped zinc sulfide: a correlation between experimental and theoretical calculations

et al. 2014

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“…Noble luminescence characteristic such as stable light emission with different colors were observed from doped ZnS nanocrytals at room temperature [1]- [4]. It has been reported that the Mn doped ZnS has been one of the best efficient electroluminescent (EL) phosphor material in use and its synthesis and properties have widely been investigated [1]- [3], [6]- [9]. In this work we report on a successful synthesis of Mn doped ZnS with enhanced luminescence characteristics.…”

Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

“…Doping on ZnS with transitional metal ions like Mn 2+ and Cu 2+ is an important aspect to yield different nanostructures [1]- [9]. Noble luminescence characteristic such as stable light emission with different colors were observed from doped ZnS nanocrytals at room temperature [1]- [4]. It has been reported that the Mn doped ZnS has been one of the best efficient electroluminescent (EL) phosphor material in use and its synthesis and properties have widely been investigated [1]- [3], [6]- [9].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Characterization of ZnS: Mn Nanopartilces

Bodo¹,

Prakash²,

Kalita³

2012

IJAPM

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Abstract-In this work Mn2+ -doped ZnS nanoparticles were prepared by chemical co-precipitation method at room temperature. The structural and optical properties of the ZnS:Mn nanoparticles were determined by XRD, SEM, UVVisible and FL analyses. XRD analysis showed the sample prepared were in cubic phase with particle size in the ranges 12nm-25 nm. The SEM analysis reveals the growth of nanoparticles agglomerated in different shapes and orientations. In UV_Visible study the band gap energy corresponding to the absorption edge estimated are found to be 4.4~ 4.3eV which shows the large blue shifting from the bulk band gap 3.6eV of ZnS. The FL peak analysis reveals the strongest absorption at around 329nm which is fairly blue shifted from the absorption edge of the bulk (345nm). Thus Mn incorporated into ZnS nanoparticles results in changing its morphological, structural and optical properties.

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Halide Perovskite Nanocrystal Emitters

Liu

Grandhi

Matta

et al. 2021

Advanced Photonics Research

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The increasing attention on halide perovskite nanocrystals (PNCs) stems from their outstanding optoelectronic properties, especially the intriguing photoluminescence (PL) features. The high photoluminescence quantum yields (up to unity) of PNCs, and the tunability of their optical bandgaps by composition engineering and quantum confinement effects, account for the demonstrated great potential in several optoelectronic applications, such as light‐emitting diodes (LEDs), phosphors, lasers, and photodetectors. However, despite the rapid growth of this research field, several questions are still left unanswered and there is room for further improving the luminescence performance, particularly for emerging lead‐free PNC compositions. Herein, the recent advances in the light emission phenomena in PNCs are discussed. A special focus is given to the correlation between PL and phase transition, the dual‐color emission, the tunability of the PL toward near‐infrared (NIR), and the thermal quenching effect. The key research findings on LEDs, the major application of perovskite‐based nanoscale emitters, are also outlined. Finally, the view on the most urgent challenges to be addressed is provided, with the intent of promoting a more profound understanding of PNC emission‐related phenomena in the future.

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Concentration effect of Mn2+ on the photoluminescence of ZnS:Mn nanocrystals

Cited by 75 publications

References 22 publications

Europium doped zinc sulfide: a correlation between experimental and theoretical calculations

Europium doped zinc sulfide: a correlation between experimental and theoretical calculations

Synthesis and Characterization of ZnS: Mn Nanopartilces

Halide Perovskite Nanocrystal Emitters

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