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Wang L, Liu G, Wang M, Song Y, Jing Q, Zhao H. Vacuum-Boosting Precise Synthetic Control of Highly Bright Solid-State Carbon Quantum Dots Enables Efficient Light Emitting Diodes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401812. [PMID: 38816772 DOI: 10.1002/smll.202401812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 05/16/2024] [Indexed: 06/01/2024]
Abstract
Carbon quantum dots (C-dots) have emerged as efficient fluorescent materials for solid-state lighting devices. However, it is still a challenge to obtain highly bright solid-state C-dots because of the aggregation caused quenching. Compared to the encapsulation of as-prepared C-dots in matrices, one-step preparation of C-dots/matrix complex is a good method to obtain highly bright solid-state C-dots, which is still quite limited. Here, an efficient and controllable vacuum-boosting gradient heating approach is demonstrated for in situ synthesis of a stable and efficient C-dots/matrix complex. The addition of boric acid strongly bonded with urea, promoting the selectivity of the reaction between citric acid and urea. Benefiting from the high reaction selectivity and spatial-confinement growth of C-dots in porous matrices, in situ synthesize C-dots bonded can synthesized dominantly with a crosslinked octa-cyclic compound, biuret and cyanuric acid (triuret). The obtained C-dots/matrix complex exhibited bright green emission with a quantum yield as high as 90% and excellent thermal and photo stability. As a proof-of-concept, the as-prepared C-dots are used for the fabrication of white light-emitting diodes (LEDs) with a color rendering index of 84 and luminous efficiency of 88.14 lm W-1, showing great potential for applications in LEDs.
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Affiliation(s)
- Lihua Wang
- College of Physics, University Industry Joint Center for Ocean Observation and Broadband Communication, College of Textiles and Clothes, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, No. 308 Ningxia Road, Qingdao, 266071, P. R. China
| | - Guiju Liu
- College of Physics, Yantai University, Yantai, 264005, P. R. China
| | - Maorong Wang
- College of Physics, University Industry Joint Center for Ocean Observation and Broadband Communication, College of Textiles and Clothes, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, No. 308 Ningxia Road, Qingdao, 266071, P. R. China
| | - Yang Song
- College of Physics, University Industry Joint Center for Ocean Observation and Broadband Communication, College of Textiles and Clothes, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, No. 308 Ningxia Road, Qingdao, 266071, P. R. China
| | - Qiang Jing
- College of Physics, University Industry Joint Center for Ocean Observation and Broadband Communication, College of Textiles and Clothes, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, No. 308 Ningxia Road, Qingdao, 266071, P. R. China
| | - Haiguang Zhao
- College of Physics, University Industry Joint Center for Ocean Observation and Broadband Communication, College of Textiles and Clothes, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, No. 308 Ningxia Road, Qingdao, 266071, P. R. China
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Ferreira RAS, Correia SFH, Georgieva P, Fu L, Antunes M, André PS. A comprehensive dataset of photonic features on spectral converters for energy harvesting. Sci Data 2024; 11:50. [PMID: 38191564 PMCID: PMC10774306 DOI: 10.1038/s41597-023-02827-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 12/06/2023] [Indexed: 01/10/2024] Open
Abstract
Building integrated photovoltaics is a promising strategy for solar technology, in which luminescent solar concentrators (LSCs) stand out. Challenges include the development of materials for sunlight harvesting and conversion, which is an iterative optimization process with several steps: synthesis, processing, and structural and optical characterizations before considering the energy generation figures of merit that requires a prototype fabrication. Thus, simulation models provide a valuable, cost-effective, and time-efficient alternative to experimental implementations, enabling researchers to gain valuable insights for informed decisions. We conducted a literature review on LSCs over the past 47 years from the Web of ScienceTM Core Collection, including published research conducted by our research group, to gather the optical features and identify the material classes that contribute to the performance. The dataset can be further expanded systematically offering a valuable resource for decision-making tools for device design without extensive experimental measurements.
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Affiliation(s)
- Rute A S Ferreira
- Department of Physics and CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193, Aveiro, Portugal.
| | - Sandra F H Correia
- Instituto de Telecomunicações, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Petia Georgieva
- Instituto de Telecomunicações, University of Aveiro, 3810-193, Aveiro, Portugal
- Departament of Electronics, Telecommunications and Informatics, Institute of Electronics and Informatics Engineering of Aveiro (IEETA), University of Aveiro, 3810-193, Aveiro, Portugal
| | - Lianshe Fu
- Department of Physics and CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Mário Antunes
- Instituto de Telecomunicações, University of Aveiro, 3810-193, Aveiro, Portugal
- Departament of Electronics, Telecommunications and Informatics, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Paulo S André
- Department of Electrical and Computer Engineering and Instituto de Telecomunicações, Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisbon, Portugal.
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3
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Hu H, Wu Y, Gong X. Organosilicon-Based Carbon Dots and Their Versatile Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2305933. [PMID: 37661362 DOI: 10.1002/smll.202305933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/09/2023] [Indexed: 09/05/2023]
Abstract
Carbon dots (CDs) are a newly discovered type of fluorescent material that has gained significant attention due to their exceptional optical properties, biocompatibility, and other remarkable characteristics. However, single CDs have some drawbacks such as self-quenching, low quantum yield (QY), and poor stability. To address these issues, researchers have turned to organosilicon, which is known for its green, economical, and abundant properties. Organosilicon is widely used in various fields including optics, electronics, and biology. By utilizing organosilicon as a synthetic precursor, the biocompatibility, QY, and resistance to self-quenching of CDs can be improved. Meanwhile, the combination of organosilicon with CDs enables the functionalization of CDs, which significantly expands their original application scenarios. This paper comprehensively analyzes organosilicon in two main categories: precursors for CD synthesis and matrix materials for compounding with CDs. The role of organosilicon in these categories is thoroughly reviewed. In addition, the paper presents various applications of organosilicon compounded CDs, including detection and sensing, anti-counterfeiting, optoelectronic applications, and biological applications. Finally, the paper briefly discusses current development challenges and future directions in the field.
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Affiliation(s)
- Huajiang Hu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Yongzhong Wu
- School of Mechanical Engineering, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China
| | - Xiao Gong
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, P. R. China
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4
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Wu M, Li J, Wu Y, Gong X, Wu M. Design of a Synthetic Strategy to Achieve Enhanced Fluorescent Carbon Dots with Sulfur and Nitrogen Codoping and Its Multifunctional Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302764. [PMID: 37330653 DOI: 10.1002/smll.202302764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 06/07/2023] [Indexed: 06/19/2023]
Abstract
Here, a rational strategy to achieve multifunctional N, S codoped carbon dots (N, S-CDs) is reported, aiming to improve the photoluminescence quantum yields (PLQYs) of the CDs. The synthesized N, S-CDs have excellent stability and emission properties independent of excitation wavelength. Through the introduction of S element doping, the fluorescence emission of CDs is red-shifted from 430 to 545 nm, and the corresponding PLQYs can be greatly enhanced from 11.2% to 65.1%. It is found that the doping of S elements causes an increase in the size of CDs and an elevated graphite N content, which may be the key factors to cause the redshift of fluorescence emission. Furthermore, the introduction of S element also serves to suppress the nonradiative transitions, which may be responsible for the elevated PLQYs. Besides, the synthesized N, S-CDs have certain solvent effect and can be applied to detect water content in organic solvents, and have strong sensitivity to alkaline environment. More importantly, the N, S-CDs can be used to achieve an "on-off-on" dual detection mode between Zr4+ and NO2 - . In addition, N, S-CDs combinedwith polyvinylpyrrolidone (PVP) can also be utilized as fluorescent inks for anti-counterfeiting applications.
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Affiliation(s)
- Mengyi Wu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Jiurong Li
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Yongzhong Wu
- School of Mechanical Engineering, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China
| | - Xiao Gong
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Min Wu
- Department of Radiology and Huaxi MR Research Center (HMRRC), Functional and Molecular lmaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
- Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, P. R. China
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5
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Correia SFH, Fu L, Dias LMS, Pereira RFP, de Zea Bermudez V, André PS, Ferreira RAS. An autonomous power temperature sensor based on window-integrated transparent PV using sustainable luminescent carbon dots. NANOSCALE ADVANCES 2023; 5:3428-3438. [PMID: 37383075 PMCID: PMC10295119 DOI: 10.1039/d3na00136a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 04/06/2023] [Indexed: 06/30/2023]
Abstract
The energy efficiency of buildings can be significantly improved through the use of renewable energy sources. Luminescent solar concentrators (LSCs) appear to be a solution for integrating photovoltaic (PV) devices into the structure of buildings (windows, for instance) to enable low-voltage devices to be powered. Here, we present transparent planar and cylindrical LSCs based on carbon dots in an aqueous solution and dispersed in organic-inorganic hybrid matrices, which present photoluminescent quantum yield values up to 82%, facilitating an effective solar photon conversion. These LSCs showed the potencial for being incorporated as building windows due to an average light transmittance of up to ∼91% and color rendering index of up to 97, with optical and power conversion efficiency values of 5.4 ± 0.1% and 0.18 ± 0.01%, respectively. In addition, the fabricated devices showed temperature sensing ability enabling the fabrication of an autonomous power mobile temperature sensor. Two independent thermometric parameters were established based on the emission and the electrical power generated by the LSC-PV system, which could both be accessed by a mobile phone, enabling mobile optical sensing through multiparametric thermal reading with relative sensitivity values up to 1.0% °C-1, making real-time mobile temperature sensing accessible to all users.
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Affiliation(s)
- Sandra F H Correia
- Instituto de Telecomunicações and University of Aveiro, Campus Universitário de Santiago 3810-193 Aveiro Portugal
| | - Lianshe Fu
- Department of Physics and CICECO - Aveiro Institute of Materials, University of Aveiro 3810-193 Aveiro Portugal
| | - Lília M S Dias
- Department of Physics and CICECO - Aveiro Institute of Materials, University of Aveiro 3810-193 Aveiro Portugal
- Department of Electrical and Computer Engineering and Instituto de Telecomunicações, Instituto Superior Técnico, University of Lisbon 1049-001 Lisbon Portugal
| | - Rui F P Pereira
- Chemistry Center and Chemistry Department, University of Minho 4710-057 Braga Portugal
| | - V de Zea Bermudez
- Chemistry Department and CQ-VR, University of Trás-os-Montes e Alto Douro 5000-801 Vila Real Portugal
| | - Paulo S André
- Department of Electrical and Computer Engineering and Instituto de Telecomunicações, Instituto Superior Técnico, University of Lisbon 1049-001 Lisbon Portugal
| | - Rute A S Ferreira
- Department of Physics and CICECO - Aveiro Institute of Materials, University of Aveiro 3810-193 Aveiro Portugal
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Cao M, Zhao X, Gong X. Achieving High-Efficiency Large-Area Luminescent Solar Concentrators. JACS AU 2023; 3:25-35. [PMID: 36711087 PMCID: PMC9875231 DOI: 10.1021/jacsau.2c00504] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 11/27/2022] [Accepted: 11/29/2022] [Indexed: 05/27/2023]
Abstract
Luminescent solar concentrators (LSCs) are semitransparent windows that are able to generate electricity from sunlight absorption. LSCs have shown huge promise for realizing building-integrated photovoltaics (BIPV). Unfortunately, to date, the power conversion efficiency (PCE) of LSCs is still very low which dramatically hampers their practical applications. In this Perspective, We summarize and review the latest developments of LSCs by looking at different structures. Among others, we focus more on the next developments in the field of LSCs, i.e., the possibility of high PCE, large area, mass production, and durability needed for future industrial development. We hope to promote the application of uniform testing standards and to draw attention to industrial development, toxicity, and durability. Then, we will provide a critical assessment of the field of LSCs. Finally, the challenge and solution will be discussed.
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Affiliation(s)
- Mengyan Cao
- State
Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Xiujian Zhao
- State
Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Xiao Gong
- State
Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, P. R. China
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7
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Li J, Zhao H, Zhao X, Gong X. Boosting efficiency of luminescent solar concentrators using ultra-bright carbon dots with large Stokes shift. NANOSCALE HORIZONS 2022; 8:83-94. [PMID: 36321503 DOI: 10.1039/d2nh00360k] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Luminescent solar concentrators (LSCs) are able to collect sunlight from a large-area to generate electric power with a low cost, showing great potential in building-integrated photovoltaics. However, the low efficiency of large-area LSCs caused by the reabsorption losses is a critical issue that hampers their practical applications. In this work, we synthesized novel yellow emissive carbon dots (CDs) with a large Stokes shift of 193 nm, which exhibit nearly zero reabsorption. The quantum yield (QY) of the yellow emitting CDs is up to 61%. The yellow emitting CDs can be employed to fabricate high-performance large-area LSCs due to successful suppression of the reabsorption losses. The as-prepared LSCs are able to absorb 14% of the sunlight as the absorption of the CDs matches well with the sun's spectrum. The large-area LSC (10 × 10 cm2) with a laminated structure based on the yellow emitting CDs achieves an optical conversion efficiency (ηopt) of 4.56% and power conversion efficiency (ηPCE) of 4.1% under natural sunlight (45 mW cm-2), which are significantly higher than other previously reported works with similar sizes. Furthermore, the prepared high-performance LSCs show good stability. This method of synthesizing novel CDs for high-efficiency LSCs provides a useful platform for future study and practical application of LSCs.
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Affiliation(s)
- Jiurong Li
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, P. R. China.
| | - Haiguang Zhao
- State Key Laboratory of Bio-Fibers and Eco-Textiles & College of Textiles & Clothing, Qingdao University, No. 308 Ningxia Road, Qingdao, 266071, P. R. China.
| | - Xiujian Zhao
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, P. R. China.
| | - Xiao Gong
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, P. R. China.
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8
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Han S, Wen J, Cheng Z, Chen G, Jin S, Shou C, Kuo HC, Tu CC. Luminescence-guided and visibly transparent solar concentrators based on silicon quantum dots. OPTICS EXPRESS 2022; 30:26896-26911. [PMID: 36236873 DOI: 10.1364/oe.463353] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 06/23/2022] [Indexed: 06/16/2023]
Abstract
In this work, we demonstrate a new tapered prism-shaped luminescent solar concentrator (LSC), which guides most of the luminescence toward one edge instead of four, for the solar window application. Only one Si photovoltaic (PV) strip attached to the light-emitting sidewall is needed to collect the luminescence, which further reduces PV material cost and avoids electrical mismatch. To achieve high visible transmission and mitigate reabsorption, colloidal silicon quantum dots (SiQDs) with ultraviolet-selective absorption and large Stokes shift are used as the fluorophores. With the SiQD concentration equal to 8 mg mL-1, the SiQD-LSC as a solar window can attain a power conversion efficiency (PCE) equal to 0.27%, while ensuring high average visible transmission (AVT = 86%) and high color rendering index (CRI = 94 with AM1.5G as the incident spectrum). When adjusted to front-facing, the Si PV strip can harvest not only the direct sunlight but also the concentrated SiQD fluorescence guided from the LSC. As a result, the overall solar window PCE can be increased to 1.18%, and the PCE of the front-facing Si PV strip alone can be increased by 7% due to the luminescence guided from the SiQD-LSC.
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Lin H, Zhang Z, Zhang H, Lin KT, Wen X, Liang Y, Fu Y, Lau AKT, Ma T, Qiu CW, Jia B. Engineering van der Waals Materials for Advanced Metaphotonics. Chem Rev 2022; 122:15204-15355. [PMID: 35749269 DOI: 10.1021/acs.chemrev.2c00048] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The outstanding chemical and physical properties of 2D materials, together with their atomically thin nature, make them ideal candidates for metaphotonic device integration and construction, which requires deep subwavelength light-matter interaction to achieve optical functionalities beyond conventional optical phenomena observed in naturally available materials. In addition to their intrinsic properties, the possibility to further manipulate the properties of 2D materials via chemical or physical engineering dramatically enhances their capability, evoking new science on light-matter interaction, leading to leaped performance of existing functional devices and giving birth to new metaphotonic devices that were unattainable previously. Comprehensive understanding of the intrinsic properties of 2D materials, approaches and capabilities for chemical and physical engineering methods, the resulting property modifications and novel functionalities, and applications of metaphotonic devices are provided in this review. Through reviewing the detailed progress in each aspect and the state-of-the-art achievement, insightful analyses of the outstanding challenges and future directions are elucidated in this cross-disciplinary comprehensive review with the aim to provide an overall development picture in the field of 2D material metaphotonics and promote rapid progress in this fast emerging and prosperous field.
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Affiliation(s)
- Han Lin
- School of Science, RMIT University, Melbourne, Victoria 3000, Australia.,The Australian Research Council (ARC) Industrial Transformation Training, Centre in Surface Engineering for Advanced Materials (SEAM), Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Zhenfang Zhang
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an 710048, China
| | - Huihui Zhang
- Centre for Translational Atomaterials, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Keng-Te Lin
- School of Science, RMIT University, Melbourne, Victoria 3000, Australia
| | - Xiaoming Wen
- Centre for Translational Atomaterials, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Yao Liang
- Centre for Translational Atomaterials, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Yang Fu
- Centre for Translational Atomaterials, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Alan Kin Tak Lau
- Centre for Translational Atomaterials, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Tianyi Ma
- School of Science, RMIT University, Melbourne, Victoria 3000, Australia.,Centre for Translational Atomaterials, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
| | - Cheng-Wei Qiu
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Baohua Jia
- School of Science, RMIT University, Melbourne, Victoria 3000, Australia.,The Australian Research Council (ARC) Industrial Transformation Training, Centre in Surface Engineering for Advanced Materials (SEAM), Swinburne University of Technology, Hawthorn, Victoria 3122, Australia.,Centre for Translational Atomaterials, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia
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Cao W, Wu Y, Li X, Jiang X, Zhang Y, Zhan Y, Sun Z. One-pot synthesis of double silane-functionalized carbon dots with tunable emission and excellent coating properties for WLEDs application. NANOTECHNOLOGY 2021; 33:115703. [PMID: 34874317 DOI: 10.1088/1361-6528/ac4067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 12/06/2021] [Indexed: 05/24/2023]
Abstract
Silane-functionalized carbon dots (SiCDs) can be exploited as effective color converting materials for the solid-state light-emitting devices. However, most of SiCDs reported thus far have shown photoluminescence emissions in the blue and green spectral range, which limit them to construct an efficient white light-emitting diodes (WLEDs) due to the lack of long-wavelength emission. Herein, a series of double silane-functionalized carbon dots (DSiCDs) were prepared via a one-step solvothermal method. The results show that the organic functional group of the silane has great influence on the optical properties of DSiCDs and the number of alkoxy group in the silane has great influence on coating properties of DSiCDs. In addition, the DSiCDs prepared by (3-aminopropyl)triethoxysilane and N-[3-(trimethoxysilyl)propyl]ethylenediamine with molar ratio of 7:3 show excellent optical properties with the maximum emission at 608 nm under 570 nm excitation. Furthermore, they can be completely cured within 1 h at room temperature to form fluorescent coating with high stability and strong adhesion to the substrate. Together with their excellent optical and coating properties, they can be directly coated on LED chips to prepare WLEDs, with a CIE coordinate of (0.33,0.31), color rendering index of 81.6, and color temperature of 5774 K.
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Affiliation(s)
- Wenbing Cao
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, People's Republic of China
| | - Yuhan Wu
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, People's Republic of China
| | - Xin Li
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, People's Republic of China
| | - Xuanfeng Jiang
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, People's Republic of China
| | - Yuhong Zhang
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, People's Republic of China
| | - Yuan Zhan
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, People's Republic of China
| | - Zhengguang Sun
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, People's Republic of China
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11
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Kim A, Hosseinmardi A, Annamalai PK, Kumar P, Patel R. Review on Colloidal Quantum Dots Luminescent Solar Concentrators. ChemistrySelect 2021. [DOI: 10.1002/slct.202100674] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Andrew Kim
- Department of Chemical Engineering, The Cooper Union for the Advancement of Science and Art New York City, NY 10003 USA
| | - Alireza Hosseinmardi
- Australian Institute for Bioengineering and Nanotechnology (AIBN) The University of Queensland St Lucia QLD 4072 Australia
| | - Pratheep K. Annamalai
- Australian Institute for Bioengineering and Nanotechnology (AIBN) The University of Queensland St Lucia QLD 4072 Australia
| | - Pawan Kumar
- Institut National de la Recherche Scientifique, Centre Énergie Materiaux Télecommunications (INRS-EMT) Varennes QC Canada
- Department of Chemistry and Biochemistry University of Oklahoma 101 Stephenson Parkway Norman OK 73019 USA
| | - Rajkumar Patel
- Energy & Environmental Science and Engineering (EESE) Integrated Science and Engineering Division (ISED) Underwood International College Yonsei University 85 Songdogwahak-ro, Yeonsugu Incheon 21938 South Korea
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12
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Xu S, Tan L, Liu F, Cui Y, Wang C, Zhang R. Investigation of optical properties for N- and F-doped triangular shaped carbon molecules. J Mol Model 2021; 27:154. [PMID: 33954863 DOI: 10.1007/s00894-021-04758-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 04/18/2021] [Indexed: 10/21/2022]
Abstract
Optical properties of N- and F-doping triangular-shaped carbon molecules have been investigated in theory and experiment. The theoretical results showed that carbon molecules with impurity F and Cl have the same characters with pure carbon. Doping N into pure carbon molecule would change the optical rotation at 589 nm. For doping N replacing hydrogen atom structures (N-doping 1 and N-doping 2 molecules), the absorption spectra of them are similar to pure carbon molecule. However, for molecules with impurity N atom in benzene ring (N-doping 3 and N-doping 4 molecules), the peaks of wavelength of absorption spectra shift to long wavelength compared to that of pure carbon molecule. Moreover, the delocalization of molecular orbital (MO) is different from pure carbon molecule, which is caused by the impurity N changing the electrons distribution of benzene ring. We have calculated 3 without H and 4 without H molecules which are removing hydrogen atom in nitrogen atom from N-doping 3 and 4. 3 without H and 4 without H molecules have similar optical properties with pure carbon molecule. The results testified that the impurity N and F would not change the optical properties of carbon molecule if impurity did not change the delocalization of all benzene rings. Optical properties of nitrogen- and fluorine-doping carbon molecules investigating in theory and experiment.
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Affiliation(s)
- Shuhong Xu
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, Jiangsu, China
| | - Linfeng Tan
- Chien-Shiung Wu College, Southeast University, Nanjing, 210096, Jiangsu, China
| | - Fan Liu
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, Jiangsu, China
| | - Yiping Cui
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, Jiangsu, China
| | - Chunlei Wang
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, Jiangsu, China.
| | - Rong Zhang
- Department of Obstetrics and Gynecology, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing, China.
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Wang H, Zhang Z, Yan Q, Zhang C, Xing Y, Xiong Y, Zhang F, Wang Z. Highly Luminescent Solid‐State Carbon Dots Embedded in a Boric Acid Matrix. ChemistrySelect 2020. [DOI: 10.1002/slct.202004009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Henggang Wang
- Key Laboratory of Chemical Biology of Hebei Province Key Laboratory of Medicinal Chemistry and Molecular Diagnosis Ministry of Education College of Chemistry & Environmental Science Hebei University Baoding 071002 China
| | - Zhen Zhang
- Key Laboratory of Chemical Biology of Hebei Province Key Laboratory of Medicinal Chemistry and Molecular Diagnosis Ministry of Education College of Chemistry & Environmental Science Hebei University Baoding 071002 China
| | - Qinqin Yan
- Key Laboratory of Chemical Biology of Hebei Province Key Laboratory of Medicinal Chemistry and Molecular Diagnosis Ministry of Education College of Chemistry & Environmental Science Hebei University Baoding 071002 China
| | - Chenyang Zhang
- Key Laboratory of Chemical Biology of Hebei Province Key Laboratory of Medicinal Chemistry and Molecular Diagnosis Ministry of Education College of Chemistry & Environmental Science Hebei University Baoding 071002 China
| | - Yifei Xing
- Key Laboratory of Chemical Biology of Hebei Province Key Laboratory of Medicinal Chemistry and Molecular Diagnosis Ministry of Education College of Chemistry & Environmental Science Hebei University Baoding 071002 China
| | - Yuan Xiong
- Center of Super-Diamond and Advanced Films (COSDAF) and Department of Chemistry City University of Hong Kong Hong Kong China
| | - Feng Zhang
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education Department of Chemistry Tsinghua University Beijing 100084 China
| | - Zhenguang Wang
- Key Laboratory of Chemical Biology of Hebei Province Key Laboratory of Medicinal Chemistry and Molecular Diagnosis Ministry of Education College of Chemistry & Environmental Science Hebei University Baoding 071002 China
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Han S, Chen G, Shou C, Peng H, Jin S, Tu CC. Visibly Transparent Solar Windows Based on Colloidal Silicon Quantum Dots and Front-Facing Silicon Photovoltaic Cells. ACS APPLIED MATERIALS & INTERFACES 2020; 12:43771-43777. [PMID: 32896124 DOI: 10.1021/acsami.0c12717] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We demonstrate luminescent solar concentrators (LSCs) based on colloidal silicon quantum dots (SiQDs) as UV-selective fluorophores and coupled with front-facing silicon photovoltaic cells for the solar window application. The visibly transparent LSC composed of a thin layer of liquid SiQD suspension sandwiched between two thin glass slabs constitutes the windowpane, while strips of silicon photovoltaic cells with their front surfaces adhering to the LSC rear surface form the window frame. Furthermore, the LSC perimeter is surrounded by reflecting mirrors for preventing the fluorescence from leaking out through the edges. The SiQDs dispersed in 1-octadecene selectively absorb UV light and re-emit red fluorescence with quantum efficiency about 40%. Owing to the negligible overlap between the absorbance and photoluminescence spectra, the reabsorption effect is insignificant. The front-facing silicon photovoltaic strips located at the window frame can produce electricity by harvesting not only solar radiation but also the SiQD-generated fluorescence propagating from the windowpane. For the SiQD-LSC with the total light absorbing area equal to 12 cm × 12 cm and the reflecting mirrors tilted 45°, an overall power conversion efficiency of 2.47% under simulated sunlight can be obtained of which about 6% is contributed by the SiQD fluorescence. Meanwhile, the SiQD-LSC retains high spectral quality with average visible transmission and color rendering index through the windowpane equal to 86% and 94, respectively.
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Affiliation(s)
- Shanshan Han
- University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Guo Chen
- University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Chunhui Shou
- Zhejiang Energy Group R&D Institute Co., Ltd. and Key Laboratory of Solar Energy Utilization & Energy Saving Technology of Zhejiang Province, Hangzhou, Zhejiang 311121, China
| | - Hao Peng
- Zhejiang Energy Group R&D Institute Co., Ltd. and Key Laboratory of Solar Energy Utilization & Energy Saving Technology of Zhejiang Province, Hangzhou, Zhejiang 311121, China
| | - Shengli Jin
- Zhejiang Energy Group R&D Institute Co., Ltd. and Key Laboratory of Solar Energy Utilization & Energy Saving Technology of Zhejiang Province, Hangzhou, Zhejiang 311121, China
| | - Chang-Ching Tu
- University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China
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