Special Issue "Quantum Dots and Micro-LED Display"

A special issue of Nanomaterials (ISSN 2079-4991).

Deadline for manuscript submissions: 10 May 2020.

Special Issue Editors

Prof. Hao-chung Kuo
E-Mail Website
Guest Editor
Department of Photonics & Institute of Electro-Optical Engineering, National Chiao Tung University, Taiwan
Interests: Nanostructured optoelectronic materials and devices; III-V(Nitride) high speed semiconductor laser technology and related research
Special Issues and Collections in MDPI journals
Prof. Lung-Chien Chen
E-Mail Website
Co-Guest Editor
Department of Electro-optical Engineering, National Taipei University of Technology, Taiwan
Interests: ultraviolet epitaxy; semiconductor optoelectronic components; semiconductor materials
Special Issues and Collections in MDPI journals
Prof. Dr. Zhaojun Liu
E-Mail Website
Co-Guest Editor
Southern University of Science and Technology, Department of Electrical and Electronic Engineering, Qingshuihe, Shenzhen, China
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colleagues,

Quantum dots (QDs) have many unique physical and optical properties, such as high photoluminescence quantum yield, tunable emission over the entire visible spectral region, narrow emission spectrum, and high color purity. QDs have become a suitable candidate material in the display field, which has great potential to replace the traditional phosphor powder and increase the LCD color gamut range.

Micro-LED is an emerging flat panel display technology. As the name implies, micro LED displays consist of arrays of microscopic LEDs forming the individual pixel elements. The applications include near-eye display, wearable devices, head mount devices, visible light communications, computer monitors, biomedical devices and projectors, which are benefit from the obvious advantages of Micro-LED display in brightness and saturation, high display quality even in high-intensity ambient light.

In this Special Issue, we would like to invite all papers related science and technologies of Quantum Dot (QD) ranging from materials research, device structure and properties, device applications for micro-LED display, manufacturing and high color gamut of display using QD. Especially, in the following fields:

  • QD or Micro-LED display
  • Energy applications
  • Bio-applications
  • Mechanical resonators
  • Optoelectronics like lasing, lighting, micro-display, AR/VR etc.

Prof. Dr. Hao-chung Kuo
Prof. Dr. Lung-Chien Chen
Prof. Dr. Zhaojun Liu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Nanomateria
  • Perovskite quantum dots
  • IR quantum dots
  • microled display

Published Papers (2 papers)

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Research

Open AccessArticle
Ultrawide Color Gamut Perovskite and CdSe/ZnS Quantum-Dots-Based White Light-Emitting Diode with High Luminous Efficiency
Nanomaterials 2019, 9(9), 1314; https://doi.org/10.3390/nano9091314 - 14 Sep 2019
Abstract
We demonstrate excellent color quality of liquid-type white light-emitting diodes (WLEDs) using a combination of green light-emitting CsPbBr3 and red light-emitting CdSe/ZnS quantum dots (QDs). Previously, we reported red (CsPbBr1.2I1.8) and green (CsPbBr3) perovskite QDs (PQDs)-based [...] Read more.
We demonstrate excellent color quality of liquid-type white light-emitting diodes (WLEDs) using a combination of green light-emitting CsPbBr3 and red light-emitting CdSe/ZnS quantum dots (QDs). Previously, we reported red (CsPbBr1.2I1.8) and green (CsPbBr3) perovskite QDs (PQDs)-based WLEDs with high color gamut, which manifested fast anion exchange and stability issues. Herein, the replacement of red PQDs with CdSe/ZnS QDs has resolved the aforementioned problems effectively and improved both stability and efficiency. Further, the proposed liquid-type device possesses outstanding color gamut performance (132% of National Television System Committee and 99% of Rec. 2020). It also shows a high efficiency of 66 lm/W and an excellent long-term operation stability for over 1000 h. Full article
(This article belongs to the Special Issue Quantum Dots and Micro-LED Display)
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Open AccessArticle
A Bilayer 2D-WS2/Organic-Based Heterojunction for High-Performance Photodetectors
Nanomaterials 2019, 9(9), 1312; https://doi.org/10.3390/nano9091312 - 13 Sep 2019
Abstract
Two-dimensional (2D) tungsten disulfide (WS2) has inspired great efforts in optoelectronics, such as in solar cells, light-emitting diodes, and photodetectors. However, chemical vapor deposition (CVD) grown 2D WS2 domains with the coexistence of a discontinuous single layer and multilayers are [...] Read more.
Two-dimensional (2D) tungsten disulfide (WS2) has inspired great efforts in optoelectronics, such as in solar cells, light-emitting diodes, and photodetectors. However, chemical vapor deposition (CVD) grown 2D WS2 domains with the coexistence of a discontinuous single layer and multilayers are still not suitable for the fabrication of photodetectors on a large scale. An emerging field in the integration of organic materials with 2D materials offers the advantages of molecular diversity and flexibility to provide an exciting aspect on high-performance device applications. Herein, we fabricated a photodetector based on a 2D-WS2/organic semiconductor materials (mixture of the (Poly-(N,N′-bis-4-butylphenyl-N,N′-bisphenyl) benzidine and Phenyl-C61-butyric acid methyl ester (Poly-TPD/PCBM)) heterojunction. The application of Poly-TPD/PCBM organic blend film enhanced light absorption, electrically connected the isolated WS2 domains, and promoted the separation of electron-hole pairs. The generated exciton could sufficiently diffuse to the interface of the WS2 and the organic blend layers for efficient charge separation, where Poly-TPD was favorable for hole carrier transport and PCBM for electron transport to their respective electrodes. We show that the photodetector exhibited high responsivity, detectivity, and an on/off ratio of 0.1 A/W, 1.1 × 1011 Jones, and 100, respectively. In addition, the photodetector showed a broad spectral response from 500 nm to 750 nm, with a peak external quantum efficiency (EQE) of 8%. Our work offers a facile solution-coating process combined with a CVD technique to prepare an inorganic/organic heterojunction photodetector with high performance on silicon substrate. Full article
(This article belongs to the Special Issue Quantum Dots and Micro-LED Display)
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