Enhanced photoluminescence effects in nanostructured cubic CdS matrix doped with Cu2+ obtained by chemical Bath deposition

Contreras-Rascón, J.I.; Dı́az-Reyes, J.; Flores-Pacheco, A.; Rosa, L. Serrano de la; Ángel-Vicente, P. del; Morales, R. Lozada; Ramos, Mario; López-Salazar, Primavera

doi:10.1016/j.jmrt.2019.10.065

Cited by 10 publications

(8 citation statements)

References 20 publications

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“…[ 54 ] Likewise, XPS spectra of phase‐pure Ag aerogels exhibit peaks at 369.9 and 373.9 eV, consistent with the presence of metallic Ag. [ 55 ] In contrast, XPS spectra of CdSe/Ag hybrids show Cd peaks at 405.06 eV (Cd 3d 5/2 ) and 411.77 eV (Cd 3d 3/2 ) corresponding to Cd 2+ , [ 56,57 ] and Se peaks at 53.90 eV (3d 5/2 ) and 54.60 eV (3d 3/2 ) corresponding to both Se 2− and Se n n − species (Figure 7). [ 54,58,59 ] The binding energies of Ag in the hybrids were observed at 368.09 eV (Ag 3d 5/2 ) and 373.98 eV (Ag 3d 3/2 ) that can be assigned to metallic Ag (0) species.…”

Section: Resultsmentioning

confidence: 99%

CdSe/Ag Hybrid Aerogels: Integration of Plasmonic and Excitonic Properties of Metal–Semiconductor Nanostructures via Sol–Gel Assembly

Liyanage

Spera

Sarkar

et al. 2021

Advanced Photonics Research

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Metal–semiconductor hybrid nanomaterials (HNMs) exhibit unique properties that are distinct from individual nanostructures, leading to promising applications in optical technologies. The interfacial linkage of semiconductor and metal nanoparticles (NPs) via cogelation is an effective strategy to produce HNMs that show strong plasmon‐exciton coupling and improved physical properties. However, optical properties of these hybrids show little to no tunability. Herein, CdSe/Ag hybrid aerogels that show tunable absorption and photoluminescence (PL) are produced by cogelation of CdSe nanorods (NRs) or NPs with Ag hollow NPs. Hybrid electronic states are created by overlapping the excitonic absorption of CdSe NRs or NPs with the plasmonic absorption of Ag NPs. Physical characterization of the hybrids reveals an interconnected network of hexagonal CdSe and cubic Ag NPs, linked by Ag+ and Se2− surface species, without intervening ligands. PL spectra exhibit maxima at 640 and 720 nm for the CdSe NPs/Ag and CdSe NRs/Ag hybrids, respectively, corresponding to new radiative decay mechanisms. Time‐resolved PL data support the emergence of new radiative pathways, kinetically and energetically distinct from the excitonic and plasmonic properties of primary NPs. This new approach of metal–semiconductor hybrid formation through cogelation is intriguing for the design of high‐efficiency HNMs without detrimental PL quenching.

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Section: Resultsmentioning

confidence: 99%

CdSe/Ag Hybrid Aerogels: Integration of Plasmonic and Excitonic Properties of Metal–Semiconductor Nanostructures via Sol–Gel Assembly

Liyanage

Spera

Sarkar

et al. 2021

Advanced Photonics Research

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“…80-0006 [5] and no. 41-1049 [2]). The intense XRD peak corresponds to the preferential orientation of the growth of the plane (002), which indicates that the films were grown along the c crystallographic axis.…”

Section: Morphological and Crystalline Characterizationmentioning

confidence: 99%

“…The development of semiconducting nanomaterials doped with metal ions has received much interest from different research groups because their properties differ from those of bulk materials [1][2][3][4]. Among II-VI semiconductor nanomaterials, cadmium sulfide (CdS), an n-type semiconductor, is of interest in photovoltaic solar cells due to its bulk direct energy gap (E g ) of 2.42 eV at room temperature (RT) [1,[5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, CdS is a promising and interesting material for nanodevice applications due to its physicochemical properties [3,9,10]. Previous works reported that various synthesis methods have been used to grow CdS thin films [2][3][4][5][9][10][11][12][13], where chemical bath deposition (CBD) is widely employed for its scalability, low cost, and easy manufacturing process. This technique has been used for several years and is based on the deposition of metal chalcogenide semiconductor thin films on a solid substrate from a chemical reaction occurring in an aqueous solution [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, CBD does not require high vacuum systems and/or high temperatures, unlike other methods such as RF-sputtering deposition [19] or deposition by evaporation [20]. In addition to being environmentally friendly [2,21], the CBD method exhibits good reproducibility for the mass production of thin films on an industrial scale [22].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Study of the Properties of CdS:Al (R = [Al3+]/[Cd2+] = 0.30, 0.40, 0.50) Thin Films Grown by the CBD Method in an Ammonia-Free System

et al. 2023

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CdS:Al thin films were fabricated on a glass substrate using the CBD method. The effect of aluminum incorporation on the structural, morphological, vibrational, and optical properties of CdS thin layers was investigated by X-ray diffraction (XRD), Raman spectroscopy (RS), atomic force microscopy (AFM), scanning electron microscopy (SEM), and UV-visible (UV-vis) and photoluminescence (PL) spectroscopies. XRD analysis of deposited thin films confirmed a hexagonal structure with a preferred (002) orientation in all samples. The crystallite size and surface morphology of the films are modified with aluminum content. Raman spectra exhibit fundamental longitudinal optical (LO) vibrational modes and their overtones. Optical properties were studied for each thin film. Here, it was observed that the optical properties of thin films are affected by the incorporation of aluminum into the CdS structure.

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Fabrication of Al and La co-doped CdS thin film for ammonia gas-sensing application through low-cost nebulizer spray pyrolysis technique

Hari Prasad,

Vinoth,

Ganesh

et al. 2024

Appl. Phys. A

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Enhanced photoluminescence effects in nanostructured cubic CdS matrix doped with Cu2+ obtained by chemical Bath deposition

Cited by 10 publications

References 20 publications

CdSe/Ag Hybrid Aerogels: Integration of Plasmonic and Excitonic Properties of Metal–Semiconductor Nanostructures via Sol–Gel Assembly

CdSe/Ag Hybrid Aerogels: Integration of Plasmonic and Excitonic Properties of Metal–Semiconductor Nanostructures via Sol–Gel Assembly

Study of the Properties of CdS:Al (R = [Al3+]/[Cd2+] = 0.30, 0.40, 0.50) Thin Films Grown by the CBD Method in an Ammonia-Free System

Fabrication of Al and La co-doped CdS thin film for ammonia gas-sensing application through low-cost nebulizer spray pyrolysis technique

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