Influence of ammonia concentration on the structural, composition and optical properties of CdZnS thin films

Zhang, Liming; Xue, Yuming; Feng, Shiping; Guo, Qianyu

doi:10.1016/j.mssp.2019.104650

Cited by 17 publications

(9 citation statements)

References 16 publications

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“…So, during the co-precipitation process, Cd 2? ions were obviously in a favorable position during the reaction with S 2ions, which led to a slight increase in the Cd content in the resulting solid solution [37].…”

Section: Resultsmentioning

confidence: 98%

One-step chemical bath co-precipitation method to prepare high hydrogen-producing active ZnxCd1-xS solid solution with adjustable band structure

Lü

Dong

et al. 2021

J Mater Sci

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A series of ZnxCd1−xS solid solutions were synthesized through a simple one-step chemical bath co-precipitation route. The microstructure, morphology, composition and optical properties had been thoroughly investigated. The results showed that the as-obtained ZnxCd1−xS samples exhibited monodisperse spherical feature. These monodisperse ZnxCd1−xS spheres were composed of a large number of 5–10 nm crystal grains. The chemical composition of the ZnxCd1−xS solid solutions can be controlled by adjusting the ratio of Zn source to Cd source and the dosage of ammonia solution. Meanwhile, the energy band structure and photocatalytic properties can be optimized. The photocatalysis experiment results revealed that the as-synthesized Zn0.30Cd0.70S sample exhibited optimum water splitting performance. The satisfactory hydrogen evolution rate (HER) of Zn0.30Cd0.70S reached 27.004 mmol g−1 h−1 even without any cocatalysts, which was more than 48 times that of pure CdS (0.561 mmol g−1 h−1). This enhancing effect can owe to the balance between light absorption capacity and redox potential caused by the incorporation of Zn in the ZnxCd1−xS solid solutions.

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Section: Resultsmentioning

confidence: 98%

One-step chemical bath co-precipitation method to prepare high hydrogen-producing active ZnxCd1-xS solid solution with adjustable band structure

Lü

Dong

et al. 2021

J Mater Sci

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“…S1†), 28 it can be deduced that the band gaps of Cd 0.5 Zn 0.5 S and SrWO 4 are approximately 2.63 eV and 4.73 eV, respectively, which are similar to that reported in the literature. 29,30 The results also indicate that the apparent band gap of Cd 0.5 Zn 0.5 S/SrWO 4 (13%)-FP (1.7) (2.65 eV) is almost the same as that of Cd 0.5 Zn 0.5 S, suggesting that the absorption of Cd 0.5 Zn 0.5 S/SrWO 4 (13%)-FP (1.7) in the visible region originated from Cd 0.5 Zn 0.5 S in Cd 0.5 Zn 0.5 S/SrWO 4 -FP. Neither FP nor SrWO 4 contributed to the absorption of Cd 0.5 Zn 0.5 S/SrWO 4 (13%)-FP (1.7) in the visible region.…”

Section: Resultsmentioning

confidence: 77%

“…S1 †), 28 it can be deduced that the band gaps of Cd 0.5 Zn 0.5 S and SrWO 4 are approximately 2.63 eV and 4.73 eV, respectively, which are similar to that reported in the literature. 29,30 The results also indicate that the apparent band gap of Cd 0.5 Zn 0.5 S/SrWO 4 (13%)-FP (1.7) (2.65 eV) is almost the same as that of Cd 0.5 Zn 0.5 S, suggesting that the Furthermore, based on the N 2 adsorption-desorption isotherms of Cd 0.5 Zn 0.5 S/SrWO 4 (13%)-FP (1.7) (Fig. S2 †), its apparent specic surface area is 1.82 m 2 g −1 .…”

Section: Resultsmentioning

confidence: 99%

Facile fabrication of a flexible and shape-adaptive Cd_0.5Zn_0.5S-based photocatalytic system and its photocatalytic activity for hydrogen evolution from water

Liu

Xin

Qin

et al. 2023

Sustainable Energy Fuels

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“…The approximate CB values of ZnSe (−3.8 eV), ZnS (−3.4 eV), and CdZnS (−3.4 eV) are attained according to other literature reports because it is hard to accurately confirm these CB energy levels in our QDs. [ 40 , 42 ] Meanwhile, we put a focus on the influence of CdZnS shell on the energy barrier for hole injection from the HOMO of TFB to the VBs of QDs. In this case, the CB energy levels play a less influence on the hole injection.…”

Section: Resultsmentioning

confidence: 99%

Cadmium‐Doped Zinc Sulfide Shell as a Hole Injection Springboard for Red, Green, and Blue Quantum Dot Light‐Emitting Diodes

Liu

Guo

et al. 2022

Advanced Science

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A new strategy is developed in which cadmium‐doped zinc sulfide (CdZnS) is used as the outermost shell to synthesize red, green, and blue (RGB) quantum dots (QDs) with the core/shell structures of CdZnSe/ZnSe/ZnS/CdZnS, CdZnSe/ZnSe/ZnSeS/CdZnS, and CdZnSe/ZnSeS/ZnS/CdZnS, respectively. Firstly, the inner ZnS and ZnSe shells confine the excitons inside the cores of QDs and provide a better lattice matching with respect to the outermost shell, which ensures high photoluminescence quantum yields of QDs. Secondly, the CdZnS shell affords its QDs with shallow valence bands (VBs). Therefore, the CdZnS shell could be used as a springboard, which decreases the energy barrier for hole injection from polymers to QDs to be below 1.0 eV. It makes the holes to be easily injected into the QD EMLs and enables a balanced recombination of charge carriers in quantum dot light‐emitting diodes (QLEDs). Thirdly, the RGB QLEDs made by these new QDs exhibit peak external quantum efficiencies (EQEs) of 20.2%, 19.2%, and 8.4%, respectively. In addition, the QLEDs exhibit unexpected luminance values at low applied voltages and therefore high power efficiencies. From these results, it is evident that CdZnS could act as an excellent shell and hole injection springboard to afford high performance QLEDs.

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Influence of ammonia concentration on the structural, composition and optical properties of CdZnS thin films

Cited by 17 publications

References 16 publications

One-step chemical bath co-precipitation method to prepare high hydrogen-producing active ZnxCd1-xS solid solution with adjustable band structure

One-step chemical bath co-precipitation method to prepare high hydrogen-producing active ZnxCd1-xS solid solution with adjustable band structure

Facile fabrication of a flexible and shape-adaptive Cd_0.5Zn_0.5S-based photocatalytic system and its photocatalytic activity for hydrogen evolution from water

Cadmium‐Doped Zinc Sulfide Shell as a Hole Injection Springboard for Red, Green, and Blue Quantum Dot Light‐Emitting Diodes

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Influence of ammonia concentration on the structural, composition and optical properties of CdZnS thin films

Cited by 17 publications

References 16 publications

One-step chemical bath co-precipitation method to prepare high hydrogen-producing active ZnxCd1-xS solid solution with adjustable band structure

One-step chemical bath co-precipitation method to prepare high hydrogen-producing active ZnxCd1-xS solid solution with adjustable band structure

Facile fabrication of a flexible and shape-adaptive Cd0.5Zn0.5S-based photocatalytic system and its photocatalytic activity for hydrogen evolution from water

Cadmium‐Doped Zinc Sulfide Shell as a Hole Injection Springboard for Red, Green, and Blue Quantum Dot Light‐Emitting Diodes

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Product

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Facile fabrication of a flexible and shape-adaptive Cd_0.5Zn_0.5S-based photocatalytic system and its photocatalytic activity for hydrogen evolution from water