CdSe/ZnS Quantum Dot Thin Film Formation by an Electrospray Deposition Process for Light‐Emitting Devices

Ho, My Duyen; Kim, Namhun; Kim, Daekyoung; Cho, Sung Min; Chae, Heeyeop

doi:10.1002/smll.201400251

Cited by 17 publications

(19 citation statements)

References 24 publications

(60 reference statements)

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“…If the metal precursor contains a sulfur source (e.g., (NH 4 ) 2 MoS 4 for preparing MoS 2 ) or if additional sulfur sources such as (NH 4 ) 2 CS or L‐cysteine are added in the precursor solution, various metal sulfides can be obtained as well. The successful examples are CdS, MoS 2 , WS 2 , ZnS, SnS, etc. Following the same method, selenides such as CdSe have been successfully prepared with an additional precursor (NH 4 ) 2 CSe .…”

Section: The Electrostatic Spray Deposition Techniquementioning

confidence: 99%

Designed Nanoarchitectures by Electrostatic Spray Deposition for Energy Storage

Zhu

2018

Advanced Materials

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The development of advanced electrode materials for various energy-storage systems, especially the fabrication of designed structures and morphologies of electrode materials, has attracted intense interest in both the academic and industrial fields. Among the various synthesis methods, electrostatic spray deposition (ESD) is a simple but versatile approach, by which materials can be fabricated with various morphologies, such as granular, dense, and porous, in an easily controllable manner. Herein, motivated by the rapid advancements of the given technology, a comprehensive introduction of ESD is provided, with emphasis on the kinds of materials and the types of morphology that can be obtained, along with the important control parameters. The progress on electrode materials, which are applied in a great variety of energy-storage systems, such as Li-ion batteries, Na-ion batteries, supercapacitors, Li-S batteries, and Li-O 2 batteries, prepared by ESD is also summarized. How the specific morphologies designed by ESD improve the electrochemical performance for different types of electrode materials is also discussed. The aim is to promote the collaborative efforts among different communities to optimize and develop the ESD technique and to explore advanced electrode materials for energy storage.

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Section: The Electrostatic Spray Deposition Techniquementioning

confidence: 99%

Designed Nanoarchitectures by Electrostatic Spray Deposition for Energy Storage

Zhu

2018

Advanced Materials

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“…Applied as light sources, the main trend of recently reported ways for preparations of LEDs is all‐solution method . Moreover, other specific fabrication processes have been reported, such as electrophoretic deposition, nucleation at low temperature/shell growth at high temperature, electrospray deposition, and inkjet printing …”

Section: Applicationsmentioning

confidence: 99%

Design Principles and Material Engineering of ZnS for Optoelectronic Devices and Catalysis

Liu

Chen

et al. 2018

Adv Funct Materials

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ZnS, as one of the first semiconductors discovered and a rising material star, has embraced exciting breakthroughs in the past few years. To shed light on the design principles and engineering techniques of ZnS for improved/novel optoelectronic properties, the fundamental mechanisms and commonly employed strategies are proposed in this review. Recent progress on modifications of ZnS allows it to be extensively and effectively used in versatile applications, including transparent conductors, UV photodetectors, luminescent devices, and catalysis, which are clearly and comprehensively summarized in this work. Novel functional devices springing up from the newly developed ZnS-based materials are highlighted as well. This review not only provides a scientific insight into the advances of ZnS-based materials, but also touches on the future opportunities in this inspiring field.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adfm.201802029. relatively high charge recombination rate and low charge transport process inhibit the optoelectronic properties of ZnS as a high-performance photodetector. As a window layer of optoelectronic devices, a lack of high electrical conductivity typically hinders the practical use of ZnS in solar cells, photodiodes, light-emitting devices, etc. As a photocatalyst, the transparency of ZnS becomes a drawback as it suffers from a poor utilization of sunlight.There is not a perfect material, but the potential of developing a material is beyond limitation. The past few years have witnessed extensive designing and engineering of ZnS to explore its potentials in specific applications. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] This review summarizes the recent breakthroughs on ZnS-based materials as excellent candidates in optoelectronic devices, photocatalysis, and other novel functional devices. More importantly, it sheds light on the design principles and fundamental mechanisms of the improved performance of ZnS through strategies such as developing novel nanostructures, bandgap engineering, alloying with other materials, etc. To the best of our knowledge, it is the first comprehensive review on the design principles and material engineering of ZnS for novel/improved properties and intended applications. Briefly, current literature on a variety of ZnS-based structures was first summarized, ranging from 0D to 2D nanostructures. Then, the representative applications of ZnS-based materials are described, which are mainly consisted of four parts, as shown in Figure 1: transparent conductors, UV photodetectors, luminescent devices, and catalysis. Each part contains the latest design strategies of ZnS for the intended applications, fabrication techniques, representative examples, and the state-of-the-art devices. Finally, it outlines the challenges and opportunities in each field. In particular, we provide our perspectives on the future research directions of ZnS in energy and environment.

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“…This straightforward processing procedure also presents competitive advantages of increasing materials transfer efficiency and enabling production of large area coatings. Moreover, the composition, morphology and thickness of the composite thin film can be easily manipulated by controlling the solvent used, solution concentration and other spray parameters such as substrate temperature, nozzle‐to‐substrate distance, spray time and speed, etc …”

Section: Introductionmentioning

confidence: 99%

Facile Spray Deposition of Photocatalytic ZnO/Cu–In‐Zn‐S Heterostructured Composite Thin Film

et al. 2016

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We present a sprayed composite thin film, comprising Cu−In‐Zn−S (CIZS) particles embedded in ZnO matrix for photoelectrochemical hydrogen production from water splitting. CIZS, a photoactive semiconductor was used as a photon absorber, whereas ZnO channels as the pathway for charge transfer. It was found that the distribution of the CIZS particles had a direct impact on the photoelectrochemical (PEC) activity. A more homogeneous dispersion of smaller CIZS particles (0.56 μm) within ZnO matrix exhibited a higher photocurrent density, and 3.27 μmol/ cm2 hydrogen evolution for 5 h. Electrochemical impedance spectroscopy (EIS) was employed to analyze the charge transfer mechanism of this composite thin film. In addition, ZnO coating on top of CIZS particles also served as the adhesion and protection layers. All the PEC experiments were performed in 0.5 M K2SO4 electrolyte. No sacrificial reagents were used. The composite electrode was stable under illumination: 75.67 % of photo‐activity remained after 1 h illumination at a bias of 0.2 V vs. SCE. This study demonstrates a simple and low‐cost spray preparation of composite thin film consisting of particles embedded in any semiconductor matrix.

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CdSe/ZnS Quantum Dot Thin Film Formation by an Electrospray Deposition Process for Light‐Emitting Devices

Cited by 17 publications

References 24 publications

Designed Nanoarchitectures by Electrostatic Spray Deposition for Energy Storage

Designed Nanoarchitectures by Electrostatic Spray Deposition for Energy Storage

Design Principles and Material Engineering of ZnS for Optoelectronic Devices and Catalysis

Facile Spray Deposition of Photocatalytic ZnO/Cu–In‐Zn‐S Heterostructured Composite Thin Film

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