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Suryawanshi R, Kurrey R, Sahu S, Ghosh KK. Facile and scalable synthesis of un-doped, doped and co-doped graphene quantum dots: a comparative study on their impact for environmental applications. RSC Adv 2022; 13:701-719. [PMID: 36605643 PMCID: PMC9782860 DOI: 10.1039/d2ra05275j] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 10/20/2022] [Indexed: 12/24/2022] Open
Abstract
In recent years, graphene quantum dots (GQDs) received huge attention due to their unique properties and potential applicability in different area. Here, we report simple and facile method for the synthesis of GQDs and their functionalization by doping and co-doping using different heteroatom under the optimized conditions. The doping and co-doping of GQDs using boron and nitrogen have been confirmed by FTIR and TEM. The UV-visible and fluorescence techniques have been used to study the optical properties and stability of functionalized GQDs. Further, the screening for enhancement of quantum yields of all GQDs were performed with fluorescence and UV-visible spectra under the optimized conditions. The average QY was obtained as 16.0%, 83.6%, 18.2% and 29.6% for GQDs, B-GQDs, N-GQDs and B,N-GQDs, respectively. The sensor was used to determine paraoxon in water samples. The LOD was observed to be 1.0 × 10-4 M with linearity range of 0.001 to 0.1 M. The RSD was calculated for the developed B,N-GQDs based sensor and observed to be 2.99% with the regression coefficient as 0.997. All the doped, co-doped and un-doped GQDs possess remarkable properties as a fluorescent probe.
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Affiliation(s)
- Reena Suryawanshi
- School of Studies in Chemistry, Pt. Ravishankar Shukla UniversityRaipur-492010ChhattisgarhIndia
| | - Ramsingh Kurrey
- School of Studies in Chemistry, Pt. Ravishankar Shukla UniversityRaipur-492010ChhattisgarhIndia
| | - Sushama Sahu
- School of Studies in Chemistry, Pt. Ravishankar Shukla UniversityRaipur-492010ChhattisgarhIndia
| | - Kallol K. Ghosh
- School of Studies in Chemistry, Pt. Ravishankar Shukla UniversityRaipur-492010ChhattisgarhIndia
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Ramasamy MS, Ryu KY, Lim JW, Bibi A, Kwon H, Lee JE, Kim DH, Kim K. Solution-Processed PEDOT:PSS/MoS 2 Nanocomposites as Efficient Hole-Transporting Layers for Organic Solar Cells. NANOMATERIALS 2019; 9:nano9091328. [PMID: 31527441 PMCID: PMC6781061 DOI: 10.3390/nano9091328] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 09/07/2019] [Accepted: 09/11/2019] [Indexed: 11/16/2022]
Abstract
An efficient hole-transporting layer (HTL) based on functionalized two-dimensional (2D) MoS2-poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) composites has been developed for use in organic solar cells (OSCs). Few-layer, oleylamine-functionalized MoS2 (FMoS2) nanosheets were prepared via a simple and cost-effective solution-phase exfoliation method; then, they were blended into PEDOT:PSS, a conducting conjugated polymer, and the resulting hybrid film (PEDOT:PSS/FMoS2) was tested as an HTL for poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) OSCs. The devices using this hybrid film HTL showed power conversion efficiencies up to 3.74%, which is 15.08% higher than that of the reference ones having PEDOT:PSS as HTL. Atomic force microscopy and contact angle measurements confirmed the compatibility of the PEDOT:PSS/FMoS2 surface for active layer deposition on it. The electrical impedance spectroscopy analysis revealed that their use minimized the charge-transfer resistance of the OSCs, consequently improving their performance compared with the reference cells. Thus, the proposed fabrication of such HTLs incorporating 2D nanomaterials could be further expanded as a universal protocol for various high-performance optoelectronic devices.
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Affiliation(s)
| | - Ka Yeon Ryu
- Deprtment of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
| | - Ju Won Lim
- Deprtment of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
| | - Asia Bibi
- Deprtment of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
| | - Hannah Kwon
- Deprtment of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
| | - Ji-Eun Lee
- Deprtment of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
| | - Dong Ha Kim
- Deprtment of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea.
| | - Kyungkon Kim
- Deprtment of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea.
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Juillard S, Planes E, Matheron M, Perrin L, Berson S, Flandin L. Mechanical Reliability of Flexible Encapsulated Organic Solar Cells: Characterization and Improvement. ACS APPLIED MATERIALS & INTERFACES 2018; 10:29805-29813. [PMID: 30094989 DOI: 10.1021/acsami.8b06684] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The encapsulation of organic photovoltaic (OPV) devices can help mitigate the degradation induced by environmental factors like water and oxygen and thus potential to increase OPV lifetime. Because flexibility is an important parameter for targeted OPV applications, this paper proposes a fundamental study on the impact of the roll-to-roll flexible encapsulation process. Both performance and mechanical reliability of encapsulated devices have been scouted. Furthermore, it has been demonstrated that a relatively simple peeling technique allows understanding the role of the interfaces inside a multilayered OPV device supported by a flexible poly(ethylene terephthalate) substrate. For this purpose, the peeling strengths between each layer were measured using a series of partial devices. This provided a quantitative analysis of the mechanical strength or quality of each interface. Two interfaces revealed pronounced weaknesses: active layer with hole transporting layer and transparent conducting electrode with electron transporting layer. Among various surface treatments applied to improve these interfaces, an optimized UV-ozone (UVO3) treatment proved to modify substantially the surface properties of used zinc oxide (ZnO) and thus improved its adhesion to the neighboring layers. The physicochemical and structural changes of ZnO have been confirmed by IR spectroscopy and contact angle measurements. It has also been shown that better interfaces within the device improve the overall performance of the devices and their resilience to roll-to-roll encapsulation.
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Affiliation(s)
- Sacha Juillard
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI , 38000 Grenoble , France
- Univ. Grenoble Alpes, CEA, LITEN, INES , F-73375 Le Bourget du lac , France
| | - Emilie Planes
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI , 38000 Grenoble , France
| | - Muriel Matheron
- Univ. Grenoble Alpes, CEA, LITEN, INES , F-73375 Le Bourget du lac , France
| | - Lara Perrin
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI , 38000 Grenoble , France
| | - Solenn Berson
- Univ. Grenoble Alpes, CEA, LITEN, INES , F-73375 Le Bourget du lac , France
| | - Lionel Flandin
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI , 38000 Grenoble , France
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Xie Z, Ge H, Du J, Duan T, Yang G, He Y. Compartmentalizing Incompatible Tandem Reactions in Pickering Emulsions To Enable Visual Colorimetric Detection of Nitramine Explosives Using a Smartphone. Anal Chem 2018; 90:11665-11670. [DOI: 10.1021/acs.analchem.8b03331] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Zhenyang Xie
- State Key Laboratory of Environment-friendly Energy Materials, Sichuan Co-Innovation Center for New Energetic Materials, School of National Defense Science & Technology, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Huilin Ge
- State Key Laboratory of Environment-friendly Energy Materials, Sichuan Co-Innovation Center for New Energetic Materials, School of National Defense Science & Technology, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Jiayan Du
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Tao Duan
- State Key Laboratory of Environment-friendly Energy Materials, Sichuan Co-Innovation Center for New Energetic Materials, School of National Defense Science & Technology, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Guangcheng Yang
- Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, China
| | - Yi He
- State Key Laboratory of Environment-friendly Energy Materials, Sichuan Co-Innovation Center for New Energetic Materials, School of National Defense Science & Technology, Southwest University of Science and Technology, Mianyang 621010, P. R. China
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Zhang C, Li M, Lu HY, Chen CF. Synthesis, chiroptical properties, and self-assembled nanoparticles of chiral conjugated polymers based on optically stable helical aromatic esters. RSC Adv 2018; 8:1014-1021. [PMID: 35538983 PMCID: PMC9076947 DOI: 10.1039/c7ra12652b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 12/12/2017] [Indexed: 01/21/2023] Open
Abstract
By Suzuki coupling reaction, three pairs of chiral conjugated polymers with optically stable helical aromatic ester subunits as the main-chain were designed and synthesized. Polymers (+)-P-P1 and (-)-M-P1, (+)-P-P2 and (-)-M-P2 showed strong fluorescence emission, strong mirror image CD and circularly polarized luminescence (CPL) signals in THF. For polymers (+)-P-P3 and (-)-M-P3, containing the tetraphenylethene (TPE) moiety, they not only showed obvious aggregation induced enhancement emission (AIEE), but also exhibited mirror image CD signals and aggregation-induced enhancement CPL signals in THF-water mixtures. Moreover, (+)-P-P3 and (-)-M-P3 could also form chiral nanoparticles by solvent evaporation induced self-assembly. Interestingly, it was further found that the size of the nanoparticles could be controlled by the changing of THF/water ratio, and their CPL properties were also shown.
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Affiliation(s)
- Chao Zhang
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Meng Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences Beijing 100090 China +86-10-62554449
| | - Hai-Yan Lu
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Chuan-Feng Chen
- University of Chinese Academy of Sciences Beijing 100049 China
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences Beijing 100090 China +86-10-62554449
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Kim HJ, Lee MY, Kim JS, Kim JH, Yu H, Yun H, Liao K, Kim TS, Oh JH, Kim BJ. Solution-Assembled Blends of Regioregularity-Controlled Polythiophenes for Coexistence of Mechanical Resilience and Electronic Performance. ACS APPLIED MATERIALS & INTERFACES 2017; 9:14120-14128. [PMID: 28363015 DOI: 10.1021/acsami.6b16703] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Considering all the potential applications of organic electronics in portable, wearable, and implantable devices, it is of great importance to develop electroactive materials that possess mechanical reliability along with excellent electronic performance. The coexistence of these two attributes, however, is very difficult to achieve because there is an inverse relationship between the electrical properties and the mechanical flexibility, both of which are associated with the conjugation length and intermolecular ordering of the polymers. Herein, we demonstrate a simple and robust approach based on solution assembly of two different poly(3-hexylthiophene)s (P3HTs) with regioregularity (RR) contents of 97% and 66% to impart both electrical and mechanical properties to films for organic electronic applications. The 97% RR P3HT exhibits high electronic performance but poor mechanical resilience, and vice versa for the 66% RR P3HT. Selective crystallization of high RR P3HT induced by solution assembly allows the use of a one-step process to construct percolated networks of high RR P3HT nanowires (NWs) in a low RR P3HT matrix. Only 5 wt % of high RR P3HT NWs in a 95 wt % low RR P3HT matrix was required to produce hole mobilities comparable to that of pure high RR P3HT, and this blend film exhibited improvements by factors of 20 and 60 in elongation at break and toughness, respectively. Selective self-assembly of RR-controlled polymers allowed us to overcome the fragile nature of highly crystalline conjugated polymer films without sacrificing their electronic properties.
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Affiliation(s)
| | - Moo Yeol Lee
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH) , Pohang, Gyeongbuk 37673, Korea
| | | | | | - Hojeong Yu
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH) , Pohang, Gyeongbuk 37673, Korea
| | | | - Kin Liao
- Department of Mechanical Engineering, Khalifa University of Science and Technology , Abu Dhabi 127788, United Arab Emirates
| | | | - Joon Hak Oh
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH) , Pohang, Gyeongbuk 37673, Korea
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Yin Z, Wei J, Zheng Q. Interfacial Materials for Organic Solar Cells: Recent Advances and Perspectives. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2016; 3:1500362. [PMID: 27812480 PMCID: PMC5067618 DOI: 10.1002/advs.201500362] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Indexed: 05/22/2023]
Abstract
Organic solar cells (OSCs) have shown great promise as low-cost photovoltaic devices for solar energy conversion over the past decade. Interfacial engineering provides a powerful strategy to enhance efficiency and stability of OSCs. With the rapid advances of interface layer materials and active layer materials, power conversion efficiencies (PCEs) of both single-junction and tandem OSCs have exceeded a landmark value of 10%. This review summarizes the latest advances in interfacial layers for single-junction and tandem OSCs. Electron or hole transporting materials, including metal oxides, polymers/small-molecules, metals and metal salts/complexes, carbon-based materials, organic-inorganic hybrids/composites, and other emerging materials, are systemically presented as cathode and anode interface layers for high performance OSCs. Meanwhile, incorporating these electron-transporting and hole-transporting layer materials as building blocks, a variety of interconnecting layers for conventional or inverted tandem OSCs are comprehensively discussed, along with their functions to bridge the difference between adjacent subcells. By analyzing the structure-property relationships of various interfacial materials, the important design rules for such materials towards high efficiency and stable OSCs are highlighted. Finally, we present a brief summary as well as some perspectives to help researchers understand the current challenges and opportunities in this emerging area of research.
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Affiliation(s)
- Zhigang Yin
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China; University of Chinese Academy of Sciences 19 Yuquan Road Beijing 100049 P. R. China
| | - Jiajun Wei
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China; University of Chinese Academy of Sciences 19 Yuquan Road Beijing 100049 P. R. China
| | - Qingdong Zheng
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
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Abstract
This review highlights the factors limiting the stability of organic solar cells and recent developments in strategies to increase the stability of organic solar cells.
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Affiliation(s)
- Pei Cheng
- Beijing National Laboratory for Molecular Sciences and CAS Key Laboratory of Organic Solids
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Xiaowei Zhan
- Department of Materials Science and Engineering
- College of Engineering
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Peking University
- Beijing 100871
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Tang Q, Chen M, Yang C, Wang W, Bao H, Wang G. Enhancing the energy density of asymmetric stretchable supercapacitor based on wrinkled CNT@MnO2 cathode and CNT@polypyrrole anode. ACS APPLIED MATERIALS & INTERFACES 2015; 7:15303-15313. [PMID: 26121375 DOI: 10.1021/acsami.5b03148] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
With the advantages of high stickiness and stretchability of the hydrogel electrolyte as well as the resilient properties of film electrodes, the facile "prestrain-stick-release" strategy can be utilized for the assembly of a stretchable supercapacitor. Two major issues of concern are the relatively low mechanical strength of the hydrogel electrolyte and the low energy density of the assembled device. Herein, vinyl group grafted silica (CH2═CH-SiO2) nanoparticles were used as a nanoparticle cross-linker for polyacrylamide (PAAM), enhancing the tensile strength of 844 kPa at the strain of 3400% for the KCl-CH2═CH-SiO2/PAAM hydrogel electrolyte. Besides, carbon nanotube supported polypyrrole (CNT@PPy) and manganese dioxide (CNT@MnO2) film electrodes are prepared to assemble the stretchable asymmetric CNT@MnO2//KCl-CH2═CH-SiO2/PAAM//CNT@PPy supercapacitor, significantly enhancing the potential window to 0-2.0 V and achieving a high energy density of 40 Wh kg(-1) at the power density of 519 kW kg(-1) with the strain of 100%, which is the best known for the reported stretchable supercapacitors.
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Affiliation(s)
- Qianqiu Tang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Mingming Chen
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Chongyang Yang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Wenqiang Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Hua Bao
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Gengchao Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
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