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Nanomaterials
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Nanostructured Materials for Perovskite Solar Cells and Light-Emitting Diodes
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Nanostructured Materials for Perovskite Solar Cells and Light-Emitting Diodes

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Solar Energy and Solar Cells".

Deadline for manuscript submissions: 21 March 2025 | Viewed by 9048

Special Issue Editors

Dr. William Yu

E-Mail Website
Guest Editor
Chemistry and Physics Department, Louisiana State University in Shreveport, 1 University Place, Shreveport, LA 71115, USA
Interests: nanostructures; quantum dots; solar cells; LEDs
Special Issues, Collections and Topics in MDPI journals
Dr. Qinglong Jiang

E-Mail Website
Guest Editor
Chemistry and Physics Department, University of Arkansas, Fellow of the Engineered Science Society (FESS), Pine Bluff, AR 71601, USA
Interests: optical electronic materials/devices; nanomaterial/nanotechnology; organic/inorganic hybrid halide perovskites; sensors; solar cell/light emitting; crystal and film light emitting; dye sensitive solar cell; electrochromism; polymer electrolytes; crystals and simulation
Dr. Liang Wang

E-Mail Website
Guest Editor
School of Microelectronics, Shandong University, Jinan 250100, China
Interests: thin-film optoelectronic devices; light-emitting diodes; solar cells and detectors

Special Issue Information

Dear Colleagues,

Halide perovskites have been studied intensively and have performed excellently in various optoelectronic applications, including in solar cells and light-emitting diodes (LEDs). The solution processability of halide semiconductors means that these materials are particularly attractive when aiming to ensure the low-cost and scalable fabrication of superior optoelectronic devices. This Special Issue is a platform through which to discuss various perovskite semiconductors, including lead-based perovskites, low-dimensional halide semiconductors, and non-toxic heavy-metal-free perovskite semiconductors, in order to explore the fundamental nature of these perovskite nanomaterials in the application of optoelectronic devices, including theoretical calculation, crystal/defect chemistry, carrier dynamics, and ion migration.

Dr. William Yu
Dr. Qinglong Jiang
Dr. Liang Wang
Guest Editors

Manuscript Submission Information

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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

  • nanomaterials
  • nanostructures
  • solar cells
  • LED
  • perovskite

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Published Papers (4 papers)

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Research

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14 pages, 3227 KiB  
Article
A Colloidal-Quantum-Dot Integrated U-Shape Micro-Light-Emitting-Diode and Its Photonic Characteristics
by Yu-Ming Jao, Bo-Ming Huang, Ching Chang, Fang-Zhong Lin, Guan-Ying Lee, Chung-Ping Huang, Hao-Chung Kuo, Min-Hsiung Shih and Chien-Chung Lin
Nanomaterials 2024, 14(11), 938; https://doi.org/10.3390/nano14110938 - 27 May 2024
Viewed by 1072
Abstract
A special micro LED whose light emitting area is laid out in a U-like shape is fabricated and integrated with colloidal quantum dots (CQDs). An inkjet-type machine directly dispenses the CQD layer to the central courtyard-like area of this U-shape micro LED. The [...] Read more.
A special micro LED whose light emitting area is laid out in a U-like shape is fabricated and integrated with colloidal quantum dots (CQDs). An inkjet-type machine directly dispenses the CQD layer to the central courtyard-like area of this U-shape micro LED. The blue photons emitted by the U-shape mesa with InGaN/GaN quantum wells can excite the CQDs at the central courtyard area and be converted into green or red ones. The U-shape micro LEDs are coated with Al2O3 by an atomic layer deposition system and exhibit moderate external quantum efficiency (6.51% max.) and high surface recombination because of their long peripheries. Low-temperature measurement also confirms the recovery of the external quantum efficiency due to lower non-radiative recombination from the exposed surfaces. The color conversion efficiency brought by the CQD layer can be as high as 33.90%. A further continuous CQD aging test, which was evaluated by the strength of the CQD emission, under current densities of 100 A/cm2 and 200 A/cm2 injected into the micro LED, showed a lifetime extension of the unprotected CQD emission up to 1321 min in the U-shape device compared to a 39 min lifetime in the traditional case, where the same CQD layer was placed on the top surface of a squared LED. Full article
(This article belongs to the Special Issue Nanostructured Materials for Perovskite Solar Cells and Light-Emitting Diodes)
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13 pages, 8908 KiB  
Article
Series-Biased Micro-LED Array for Lighting, Detection, and Optical Communication
by Qian Fang, Xiaoxiao Feng, Huiping Yin, Zheng Shi, Feifei Qin, Yongjin Wang and Xin Li
Nanomaterials 2024, 14(3), 307; https://doi.org/10.3390/nano14030307 - 3 Feb 2024
Cited by 1 | Viewed by 1902
Abstract
Micro-LED arrays exhibit high brightness, a long lifespan, low power consumption, and a fast response speed. In this paper, we have proposed a series-biased micro-LED array by using a nitride layer with multi-quantum wells epitaxial on sapphire substrate. The III-nitride multiple quantum wells [...] Read more.
Micro-LED arrays exhibit high brightness, a long lifespan, low power consumption, and a fast response speed. In this paper, we have proposed a series-biased micro-LED array by using a nitride layer with multi-quantum wells epitaxial on sapphire substrate. The III-nitride multiple quantum wells serving as the micro-LED active material enable both luminescence and detection functionalities. The micro-LED array combines lighting, detection, and communication capabilities. We have conducted a thorough analysis of the micro-LED array’s optoelectronic features in both lighting and detection modes. We also explore visible light communication performance across different arrangements of single micro-LED devices within the series-biased array. Our research achieves 720p video transmission via visible light communication using the micro-LED array, supporting a communication rate of up to 10 Mbps. Our contributions encompass the successful integration of lighting and detection functions and a comprehensive assessment of optoelectronic and communication performance. This study highlights the multifunctional micro-LED array’s potential as a transceiver terminal in visible light communication systems, expanding its applications from smart lighting to visible light communication and photonic integrated chips. These innovations enhance our understanding of micro-LED technology and its versatile applications. Full article
(This article belongs to the Special Issue Nanostructured Materials for Perovskite Solar Cells and Light-Emitting Diodes)
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13 pages, 1985 KiB  
Article
Deep-Ultraviolet Transparent Electrode Design for High-Performance and Self-Powered Perovskite Photodetector
by Thi My Huyen Nguyen, Manh Hoang Tran and Chung Wung Bark
Nanomaterials 2023, 13(22), 2979; https://doi.org/10.3390/nano13222979 - 20 Nov 2023
Cited by 5 | Viewed by 1334
Abstract
In this study, a highly crystalline and transparent indium-tin-oxide (ITO) thin film was prepared on a quartz substrate via RF sputtering to fabricate an efficient bottom-to-top illuminated electrode for an ultraviolet C (UVC) photodetector. Accordingly, the 26.6 nm thick ITO thin film, which [...] Read more.
In this study, a highly crystalline and transparent indium-tin-oxide (ITO) thin film was prepared on a quartz substrate via RF sputtering to fabricate an efficient bottom-to-top illuminated electrode for an ultraviolet C (UVC) photodetector. Accordingly, the 26.6 nm thick ITO thin film, which was deposited using the sputtering method followed by post-annealing treatment, exhibited good transparency to deep-UV spectra (67% at a wavelength of 254 nm), along with high electrical conductivity (11.3 S/cm). Under 254 nm UVC illumination, the lead-halide-perovskite-based photodetector developed on the prepared ITO electrode in a vertical structure exhibited an excellent on/off ratio of 1.05 × 104, a superb responsivity of 250.98 mA/W, and a high specific detectivity of 4.71 × 1012 Jones without external energy consumption. This study indicates that post-annealed ITO ultrathin films can be used as electrodes that satisfy both the electrical conductivity and deep-UV transparency requirements for high-performance bottom-illuminated optoelectronic devices, particularly for use in UVC photodetectors. Full article
(This article belongs to the Special Issue Nanostructured Materials for Perovskite Solar Cells and Light-Emitting Diodes)
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Review

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42 pages, 11946 KiB  
Review
Progress and Application of Halide Perovskite Materials for Solar Cells and Light Emitting Devices
by Maoding Cheng, Jingtian Jiang, Chao Yan, Yuankun Lin, Mansour Mortazavi, Anupama B. Kaul and Qinglong Jiang
Nanomaterials 2024, 14(5), 391; https://doi.org/10.3390/nano14050391 - 20 Feb 2024
Cited by 8 | Viewed by 4141
Abstract
Halide perovskite materials have attracted worldwide attention in the photovoltaic area due to the rapid improvement in efficiency, from less than 4% in 2009 to 26.1% in 2023 with only a nanometer lever photo-active layer. Meanwhile, this nova star found applications in many [...] Read more.
Halide perovskite materials have attracted worldwide attention in the photovoltaic area due to the rapid improvement in efficiency, from less than 4% in 2009 to 26.1% in 2023 with only a nanometer lever photo-active layer. Meanwhile, this nova star found applications in many other areas, such as light emitting, sensor, etc. This review started with the fundamentals of physics and chemistry behind the excellent performance of halide perovskite materials for photovoltaic/light emitting and the methods for preparing them. Then, it described the basic principles for solar cells and light emitting devices. It summarized the strategies including nanotechnology to improve the performance and the application of halide perovskite materials in these two areas: from structure–property relation to how each component in the devices affects the overall performance. Moreover, this review listed the challenges for the future applications of halide perovskite materials. Full article
(This article belongs to the Special Issue Nanostructured Materials for Perovskite Solar Cells and Light-Emitting Diodes)
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