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Organic/Inorganic Hybrid Optoelectronic Materials, Devices and Physics

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A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanocomposite Materials".

Deadline for manuscript submissions: closed (30 November 2022) | Viewed by 7929

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Special Issue Editors

Prof. Dr. Jiangshan Chen

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Guest Editor

State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
Interests: nanocrystals; nanocomposites; metal halide perovskites; organic semiconductors; optoelectronic devices

Prof. Dr. Lei Wang

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Guest Editor

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Hongshan District, Wuhan 430074, China
Interests: optoelectronic materials and devices; perovskite nanocrystals; organic light-emitting diodes; perovskite light-emitting diodes

Special Issue Information

Dear Colleagues,

Organic/inorganic hybrids have attracted extensive attention as they offer the opportunity to combine the robust properties of inorganic materials with the versatility of organic compounds or groups. Among them, some have superior optical, electrical, and thermoelectric properties, which create great potential for applications in optoelectronic and electronic devices including light-emitting diodes (LEDs), solar cells, lasers, photodetectors, transistors, memories, and thermoelectric devices. Various researchers have been committed to developing novel organic/inorganic hybrid materials to improve device performance for practical applications, while some have even attempted to understand the physical characteristics of these materials and devices.

This Special Issue of Nanomaterials will include research on the development of organic/inorganic hybrid materials, the fabrication of optoelectronic and electronic devices, and the theoretical investigation of physics. The format of welcomed articles includes full papers, communications, and reviews. Potential topics include but are not limited to:

Methods for the preparation of inorganic/organic hybrid composites;
Optical, electrical, and thermoelectric properties of hybrid materials and films;
Optoelectronic and electronic devices including LEDs, solar cells, detectors, lasers, memories, and thermoelectric devices;
Strategies to improve the performance of inorganic/organic hybrid devices;
Physics in inorganic/organic hybrid optoelectronic and electronic devices.

All accepted papers will be published online with DOIs after peer review. We look forward to receiving your contributions.

Prof. Dr. Jiangshan Chen
Prof. Dr. Lei Wang
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 submissions that pass pre-check are 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 semimonthly 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 2900 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

Optoelectronics
Inorganic/organic hybrids
Light-emitting diodes
Solar cells
Detectors
Transistors
Lasers
Memories
Thermoelectrics
Physics

Published Papers (5 papers)

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Research

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16 pages, 10831 KiB

Open AccessArticle

Pencil-like Hollow Carbon Nanotubes Embedded CoP-V₄P₃ Heterostructures as a Bifunctional Catalyst for Electrocatalytic Overall Water Splitting

by Haiyang Chang, Zhijian Liang, Kun Lang, Jiahui Fan, Lei Ji, Kejian Yang, Shaolin Lu, Zetong Ma, Lei Wang and Cheng Wang

Nanomaterials 2023, 13(10), 1667; https://0-doi-org.brum.beds.ac.uk/10.3390/nano13101667 - 18 May 2023

Cited by 1 | Viewed by 1166

Abstract

Electrocatalytic water splitting is one of the most efficient ways of producing green hydrogen energy. The design of stable, active, and efficient electrocatalysts plays a crucial role in water splitting for achieving efficient energy conversion from electrical to hydrogen energy, aimed at solving the lingering energy crisis. In this work, CNT composites modified with CoP-V₄P₃ composites (CoVO-10-CNT-450P) were formed by carbonising a pencil-like precursor (Co₃V₂O₈-H₂O) and growing carbon nanotubes in situ, followed by in situ phosphorylation on the carbon nanotubes. In the HER electrocatalytic process, an overpotential of only 124 mV was exhibited at a current density of 10 mA cm⁻². In addition, as an OER catalyst, a low overpotential of 280 mV was attained at a current density of 10 mA cm⁻². Moreover, there was no noticeable change in the performance of the catalyst over a 90 h test in a continuous total water splitting experiment. The unique electronic structure and hollow carbon nanotube structure of CoVO-10-CNT-450P effectively increased the catalytic active sites, while also significantly improving the electrocatalytic activity. This work provides theoretical guidance for the design and synthetic route of high-performance non-precious metal electrocatalysts, and actively promotes the commercial application of electrochemical water splitting. Full article

(This article belongs to the Special Issue Organic/Inorganic Hybrid Optoelectronic Materials, Devices and Physics)

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12 pages, 3646 KiB

Open AccessArticle

Nonvolatile Ternary Memristor Based on Fluorene-Benzimidazole Copolymer/Au NP Composites

by Meng Gao, Yanting Du, Haifeng Yu, Zhaohua He, Shuhong Wang and Cheng Wang

Nanomaterials 2022, 12(23), 4117; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12234117 - 22 Nov 2022

Viewed by 1005

Abstract

A donor–acceptor type polymer of poly [2,7-(9,9-dioctyl)-fluorene-alt-7H-benzimidazo-[2,1-a]benzo[de]isoquinolin-7-one] (PF-BBO) based on benzimidazole groups was synthesized. This material was incorporated into data storage devices that exhibited good data storage characteristics. In order to improve the storage properties of the device, Au NPs were compounded in this material. We observed an increase in the ratio of switching current for the device with the PF-BBO/Au NP composite as the active layer. The device comprising 8 wt% Au NPs demonstrated optimal storage performance with a switching current ratio of 1:3.4 × 10²:1.0 × 10⁵ and a threshold voltage of −0.40 V/−0.85 V, respectively. The number of cycle times of this device was over 3000, which indicates excellent stability. Thus, the devices containing PF-BBO/Au NP composite as active materials offer a new dimension for future application prospects of high-density data storage. Full article

(This article belongs to the Special Issue Organic/Inorganic Hybrid Optoelectronic Materials, Devices and Physics)

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14 pages, 3930 KiB

Open AccessArticle

Efficient Quasi-2D Perovskite Light-Emitting Diodes Enabled by Regulating Phase Distribution with a Fluorinated Organic Cation

by Ziqing Ye, Junmin Xia, Dengliang Zhang, Xingxing Duan, Zhaohui Xing, Guangrong Jin, Yongqing Cai, Guichuan Xing, Jiangshan Chen and Dongge Ma

Nanomaterials 2022, 12(19), 3495; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12193495 - 06 Oct 2022

Cited by 5 | Viewed by 2422

Abstract

Metal halide perovskites have become a research highlight in the optoelectronic field due to their excellent properties. The perovskite light-emitting diodes (PeLEDs) have achieved great improvement in performance in recent years, and the construction of quasi-2D perovskites by incorporating large-size organic cations is an effective strategy for fabricating efficient PeLEDs. Here, we incorporate the fluorine meta-substituted phenethylammonium bromide (m-FPEABr) into CsPbBr₃ to prepare quasi-2D perovskite films for efficient PeLEDs, and study the effect of fluorine substitution on regulating the crystallization kinetics and phase distribution of the quasi-2D perovskites. It is found that m-FPEABr allows the transformation of low-n phases to high-n phases during the annealing process, leading to the suppression of n = 1 phase and increasing higher-n phases with improved crystallinity. The rational phase distribution results in the formation of multiple quantum wells (MQWs) in the m-FPEABr based films. The carrier dynamics study reveals that the resultant MQWs enable rapid energy funneling from low-n phases to emission centers. As a result, the green PeLEDs achieve a peak external quantum efficiency of 16.66% at the luminance of 1279 cd m⁻². Our study demonstrates that the fluorinated organic cations would provide a facile and effective approach to developing high-performance PeLEDs. Full article

(This article belongs to the Special Issue Organic/Inorganic Hybrid Optoelectronic Materials, Devices and Physics)

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12 pages, 2903 KiB

Open AccessArticle

CsPb(Br/Cl)₃ Perovskite Nanocrystals with Bright Blue Emission Synergistically Modified by Calcium Halide and Ammonium Ion

by Weizhuo Zhang, Xin Li, Chencheng Peng, Fei Yang, Linyuan Lian, Runda Guo, Jianbing Zhang and Lei Wang

Nanomaterials 2022, 12(12), 2026; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12122026 - 13 Jun 2022

Cited by 5 | Viewed by 1895

Abstract

Colloidal cesium lead halide (CsPbX₃, X = Cl, Br, and I) perovskite nanocrystals (NCs) demonstrate supreme optical properties in the spectra region of infrared, red, and green. High-performance blue-emitting counterparts are still eagerly required for next-generation full-color displays. However, it is challenging to obtain efficient blue perovskite NCs, especially in a deep blue region with an emission wavelength of around 460 nm or shorter. Herein, calcium halide and ammonium ions are applied simultaneously to modify the CsPb(Br/Cl)₃ NCs in situ to reduce surface defects, finally remarkably enhancing the photoluminescence quantum yield (PLQY) from 13% to 93% with an emission peak at 455 nm and the Commission Internationale de l’Eclairage (CIE) coordinates at (0.147, 0.030), which is close to the requirement of the Rec.2020 standard and also meets the requirement of blue emission in DCI-P3. Bright white emission and a wide color gamut are also achieved by combining the commercial red-emitting and green-emitting phosphors. The combination of time-resolved PL spectra and femtosecond transient absorption results discloses the reason for PLQY improvement as suppressing the nonradiative recombination. Full article

(This article belongs to the Special Issue Organic/Inorganic Hybrid Optoelectronic Materials, Devices and Physics)

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Review

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30 pages, 3745 KiB

Open AccessReview

Research Progress of Bifunctional Oxygen Reactive Electrocatalysts for Zinc–Air Batteries

by Haiyang Chang, Shanshan Cong, Lei Wang and Cheng Wang

Nanomaterials 2022, 12(21), 3834; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12213834 - 30 Oct 2022

Cited by 4 | Viewed by 2782

Abstract

Zinc–air batteries (ZABs) have several advantages, including high energy density, cheap price and stable performances with good application prospects in the field of power batteries. The charging and discharging reactions for the air cathode of ZABs are the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), respectively, which play an important role in the whole performance of ZAB. Due to the cost and limited reserves of highly active precious metal catalysts, it is crucial to design alternative efficient and stable dual-functional non-precious metal catalysts. In the present review, we present a systematic summary of the recent progress in the use of transition metal-based electrocatalysts as alternatives to precious metals for the positive poles of ZAB air. Combined with state-of-the-art in situ characterization technologies, a deep understanding of the catalytic mechanism of OER/ORR provided unique insights into the precise design of excellent synthetic non-precious metal catalysts from the perspective of atomic structure. This review further shows that the hybrid electric battery is a new strategy to improve the efficiency of the hybrid electric battery, which could be available to alleviate the problem of resource shortage. Finally, the challenges and research trends for the future development of ZABs were clearly proposed. Full article

(This article belongs to the Special Issue Organic/Inorganic Hybrid Optoelectronic Materials, Devices and Physics)

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