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Observing long-range non-fullerene backbone ordering in real-space to improve the charge transport properties of organic solar cells EI SCIE
期刊论文 | 2021 , 9 (31) , 16733-16742 | JOURNAL OF MATERIALS CHEMISTRY A
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Abstract :

To understand the dominance of 2,2'-((2Z,2'Z)-((12,13-bis(2-ethylhexyl)-3,9-diundecyl-12,13-dihydro-[1,2,5] thiadiazolo[3,4-e]thieno[2 '',3 '' :4',5']thieno[2',3' :4,5]pyrrolo[3,2-g]thieno[2',3' :4,5]thieno[3,2-b]indole-2,10-diyl) bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile (Y6) and its derivatives leading to the rapid efficiency rise of organic solar cells (OSCs), solid film structures are of significant importance. Here, we employ cryo-transmission electron microscopy (Cryo-TEM) to resolve the landscape of Y6 packing in neat films (unlike single crystals) in relation to device performance, and reveal how processing with carbon disulfide and [6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM) influences its molecular packing, prominently the backbone ordering. We show that Y6 prefers a face-on dominant packing structure with an in-plane long-range conjugated backbone packing in films. The long-range backbone ordering is beneficial for reducing disorders on the energy distribution of the electron transport level, thereby improving the carrier lifetime in heterojunctions. We confirm that long-range energy transfer assists poly[(2,6-(4,8-bis(5-(2-ethylhexyl)-4-fluorothiophen-2-yl)-benzo[1,2-b:4,5-b']dithiophene))-alt-(5,5-(1',3'-di2-thienyl-50,70 -bis(2-ethylhexyl)benzo[1',2'-c:4',5'-c']dithiophene-4,8-dione))] (PM6) excitons to reach the preferred Y6/PM6 interfaces without being quenched by PC71BM clusters, yielding no signs of bimolecular recombination and a high power conversion efficiency of 16.8%. Our results suggest an effective molecular packing structure in solid films, and the prominent role of backbone ordering in photoelectric conversion processes, which will outline the future development of OSCs.

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GB/T 7714 Bi, Zhaozhao , Chen, Kai , Gou, Lu et al. Observing long-range non-fullerene backbone ordering in real-space to improve the charge transport properties of organic solar cells [J]. | JOURNAL OF MATERIALS CHEMISTRY A , 2021 , 9 (31) : 16733-16742 .
MLA Bi, Zhaozhao et al. "Observing long-range non-fullerene backbone ordering in real-space to improve the charge transport properties of organic solar cells" . | JOURNAL OF MATERIALS CHEMISTRY A 9 . 31 (2021) : 16733-16742 .
APA Bi, Zhaozhao , Chen, Kai , Gou, Lu , Guo, Yuan , Zhou, Xiaobo , Naveed, Hafiz Bilal et al. Observing long-range non-fullerene backbone ordering in real-space to improve the charge transport properties of organic solar cells . | JOURNAL OF MATERIALS CHEMISTRY A , 2021 , 9 (31) , 16733-16742 .
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Fully deterministic analysis on photonic whispering-gallery modes of irregular polygonal microcavities with testing in hexagons EI SCIE
期刊论文 | 2021 , 103 (3) | PHYSICAL REVIEW A
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Polygonal microcavities supporting whispering-gallery modes (WGMs) are widely investigated for optoelectronic applications. Recently, polygonal microcavities with reduced symmetry of various types have been realized in a large number of materials, while the corresponding theoretical analysis of WGMs was either absent or done only for individual cavity shapes. We perform a systematic analysis of irregular polygonal microcavities in general, allowing us to obtain deterministic conclusions on WGMs for all possible parameters of all types of shape irregularities from a set of analytical equations and inequalities. We test the theory with several typical irregular hexagonal microcavities that were experimentally reported, and we discuss the loss mechanism verified by wave optics simulations. The results provide a powerful analyzing tool for experimentalists working on irregular polygonal microcavities, and they constitute a significant extension to the scope of WGM theory.

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GB/T 7714 Luo, Xiaoxuan , Cai, Yin , Wang, Yongsheng et al. Fully deterministic analysis on photonic whispering-gallery modes of irregular polygonal microcavities with testing in hexagons [J]. | PHYSICAL REVIEW A , 2021 , 103 (3) .
MLA Luo, Xiaoxuan et al. "Fully deterministic analysis on photonic whispering-gallery modes of irregular polygonal microcavities with testing in hexagons" . | PHYSICAL REVIEW A 103 . 3 (2021) .
APA Luo, Xiaoxuan , Cai, Yin , Wang, Yongsheng , Chen, Zaoyu , Liu, Fu , Zhang, Lei et al. Fully deterministic analysis on photonic whispering-gallery modes of irregular polygonal microcavities with testing in hexagons . | PHYSICAL REVIEW A , 2021 , 103 (3) .
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近红外可调辐射方向的非线性光学天线
期刊论文 | 2021 , 50 (7) , 1356-1361 | 人工晶体学报
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目前研究人员提出了各种光学天线以线性方式控制辐射图,而较大的非线性效应可以引起天线的折射率的变化,从而改变辐射方向图.通过修正电子的有效质量进而完善Drude模型,可得到氧化铟锡(ITO)的非线性折射率与频率和强度的函数关系,进而可知由ITO制成的纳米天线会表现出极大的光学Kerr效应.本文研究了ITO天线的线性和非线性响应.利用ITO的Kerr效应控制天线的辐射方向图.基于该模型,设计了一种非线性光学天线,实现了覆盖近红外波段(1000~1650 nm)的可调谐辐射方向图.进一步,基于ITO和介电材料硅(Si)设计了一种杂化的非线性光学天线.该杂化天线可以更好地利用ITO的强Kerr效应,可以较大程度上对光场辐射进行调控.该工作突破了新型非线性材料的强Kerr效应仅局限于特定共振频率点或者零折射率点这一特点.本研究提供一种用于超快动态控制超材料的新颖方法,可应用于光束转向和光学调制等.

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GB/T 7714 程林 , 张磊 . 近红外可调辐射方向的非线性光学天线 [J]. | 人工晶体学报 , 2021 , 50 (7) : 1356-1361 .
MLA 程林 et al. "近红外可调辐射方向的非线性光学天线" . | 人工晶体学报 50 . 7 (2021) : 1356-1361 .
APA 程林 , 张磊 . 近红外可调辐射方向的非线性光学天线 . | 人工晶体学报 , 2021 , 50 (7) , 1356-1361 .
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Ligand recognition and allosteric regulation of DRD1-Gs signaling complexes SCIE PubMed
期刊论文 | 2021 , 184 (4) , 943-+ | CELL
WoS CC Cited Count: 6
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Abstract :

Dopamine receptors, includingD1- and D2-like receptors, are important therapeutic targets in a variety of neurological syndromes, as well as cardiovascular and kidney diseases. Here, we present five cryoelectron microscopy (cryo-EM) structures of the dopamine D1 receptor (DRD1) coupled to Gs heterotrimer in complex with three catechol-based agonists, a non-catechol agonist, and a positive allosteric modulator for endogenous dopamine. These structures revealed that a polar interaction network is essential for catecholamine-like agonist recognition, whereas specific motifs in the extended binding pocket were responsible for discriminating D1-from D2-like receptors. Moreover, allosteric binding at a distinct inner surface pocket improved the activity of DRD1 by stabilizing endogenous dopamine interaction at the orthosteric site. DRD1-Gs interface revealed key features that serve as determinants for G protein coupling. Together, our study provides a structural understanding of the ligand recognition, allosteric regulation, and G protein coupling mechanisms of DRD1.

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GB/T 7714 Xiao, Peng , Yan, Wei , Gou, Lu et al. Ligand recognition and allosteric regulation of DRD1-Gs signaling complexes [J]. | CELL , 2021 , 184 (4) : 943-+ .
MLA Xiao, Peng et al. "Ligand recognition and allosteric regulation of DRD1-Gs signaling complexes" . | CELL 184 . 4 (2021) : 943-+ .
APA Xiao, Peng , Yan, Wei , Gou, Lu , Zhong, Ya-Ni , Kong, Liangliang , Wu, Chao et al. Ligand recognition and allosteric regulation of DRD1-Gs signaling complexes . | CELL , 2021 , 184 (4) , 943-+ .
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Catalytic Reduction of Organic Dyes by Multilayered Graphene Platelets and Silver Nanoparticles in Polyacrylic Acid Hydrogel EI SCIE PubMed
期刊论文 | 2021 , 14 (9) | MATERIALS
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Graphene oxide has been widely used in the oxidative degradation of environmental pollutants. However, its catalytic role can be questioned as graphene oxide with oxygen-containing functional groups may also act as reactant in oxidative reactions. Herein, hydrogel composites loaded with multilayered graphene platelets showed excellent catalytic performance for the reduction of a wastewater organic pollutant (methylene blue) under NaBH4, which proved the catalytic role of multilayered graphene platelets. The liquid-based direct exfoliation method was used to prepare two-dimensional materials, which is compatible with other liquid phase methods to prepare nanomaterials. Hydrogel composites composed of multilayered graphene platelets, silver nanoparticles, and polyacrylic acid hydrogels were synthesized in water solution under irradiation with ultraviolet light, demonstrating the advantages of synthesizing nanocomposites using the liquid-based direct exfoliation method.

Keyword :

methylene blue silver nanoparticles catalysis hydrogel composites multilayered graphene platelets

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GB/T 7714 Ding, Hanyuan , Nie, Dexi , Cui, Naiyuan et al. Catalytic Reduction of Organic Dyes by Multilayered Graphene Platelets and Silver Nanoparticles in Polyacrylic Acid Hydrogel [J]. | MATERIALS , 2021 , 14 (9) .
MLA Ding, Hanyuan et al. "Catalytic Reduction of Organic Dyes by Multilayered Graphene Platelets and Silver Nanoparticles in Polyacrylic Acid Hydrogel" . | MATERIALS 14 . 9 (2021) .
APA Ding, Hanyuan , Nie, Dexi , Cui, Naiyuan , Li, Kaili , Zhang, Xiaojing , Zhang, Lei . Catalytic Reduction of Organic Dyes by Multilayered Graphene Platelets and Silver Nanoparticles in Polyacrylic Acid Hydrogel . | MATERIALS , 2021 , 14 (9) .
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Cold Atmospheric-Pressure Plasma Caused Protein Damage in Methicillin-Resistant Staphylococcus aureus Cells in Biofilms SCIE PubMed
期刊论文 | 2021 , 9 (5) | MICROORGANISMS
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Biofilms formed by multidrug-resistant bacteria are a major cause of hospital-acquired infections. Cold atmospheric-pressure plasma (CAP) is attractive for sterilization, especially to disrupt biofilms formed by multidrug-resistant bacteria. However, the underlying molecular mechanism is not clear. In this study, CAP effectively reduced the living cells in the biofilms formed by methicillin-resistant Staphylococcus aureus, and 6 min treatment with CAP reduced the S. aureus cells in biofilms by 3.5 log(10). The treatment with CAP caused the polymerization of SaFtsZ and SaClpP proteins in the S. aureus cells of the biofilms. In vitro analysis demonstrated that recombinant SaFtsZ lost its self-assembly capability, and recombinant SaClpP lost its peptidase activity after 2 min of treatment with CAP. Mass spectrometry showed oxidative modifications of a cluster of peaks differing by 16 Da, 31 Da, 32 Da, 47 Da, 48 Da, 62 Da, and 78 Da, induced by reactive species of CAP. It is speculated that the oxidative damage to proteins in S. aureus cells was induced by CAP, which contributed to the reduction of biofilms. This study elucidates the biological effect of CAP on the proteins in bacterial cells of biofilms and provides a basis for the application of CAP in the disinfection of biofilms.

Keyword :

reactive species methicillin-resistant Staphylococcus aureus oxidative damage biofilm cold atmospheric-pressure plasma

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GB/T 7714 Guo, Li , Yang, Lu , Qi, Yu et al. Cold Atmospheric-Pressure Plasma Caused Protein Damage in Methicillin-Resistant Staphylococcus aureus Cells in Biofilms [J]. | MICROORGANISMS , 2021 , 9 (5) .
MLA Guo, Li et al. "Cold Atmospheric-Pressure Plasma Caused Protein Damage in Methicillin-Resistant Staphylococcus aureus Cells in Biofilms" . | MICROORGANISMS 9 . 5 (2021) .
APA Guo, Li , Yang, Lu , Qi, Yu , Niyazi, Gulimire , Huang, Lingling , Gou, Lu et al. Cold Atmospheric-Pressure Plasma Caused Protein Damage in Methicillin-Resistant Staphylococcus aureus Cells in Biofilms . | MICROORGANISMS , 2021 , 9 (5) .
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Robust Conformal Perfect Absorber Involving Lossy Ultrathin Film SCIE
期刊论文 | 2020 , 7 (3) | PHOTONICS
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Abstract :

Perfect absorbers have been extensively investigated due to their significant value in solar cell, photodetection, and stealth technologies. Various subwavelength structures have been proposed to improve the absorption performances, such as high absorptance, broad band, and wide absorption angle. However, excellent performances usually put forward higher requirements on structural designs, such as varying the geometry sizes or shapes to fit different center wavelengths, which inevitably increases the fabrication burden. Here, a planar sandwich structure involving a layer of highly lossy material is proposed to achieve a robust perfect absorption with 95% absorptance ranging from the visible to near infrared range. Such an excellent absorption performance is also polarization-independent and applicable to a wide incident angle. Furthermore, the proposed design can also be applied to conformal surfaces with a 90% fluctuation over a steep surface. We believe that the proposed perfect absorber with distinguished performances can find wide application.

Keyword :

conformal surface perfect absorber lossy epsilon-near-zero material

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GB/T 7714 Zhang, Lei , Wang, Kun , Chen, Hui et al. Robust Conformal Perfect Absorber Involving Lossy Ultrathin Film [J]. | PHOTONICS , 2020 , 7 (3) .
MLA Zhang, Lei et al. "Robust Conformal Perfect Absorber Involving Lossy Ultrathin Film" . | PHOTONICS 7 . 3 (2020) .
APA Zhang, Lei , Wang, Kun , Chen, Hui , Zhang, Yanpeng . Robust Conformal Perfect Absorber Involving Lossy Ultrathin Film . | PHOTONICS , 2020 , 7 (3) .
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Robust conformal perfect absorber involving lossy ultrathin film Scopus
期刊论文 | 2020 , 7 (3) | Photonics
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Perfect absorbers have been extensively investigated due to their significant value in solar cell, photodetection, and stealth technologies. Various subwavelength structures have been proposed to improve the absorption performances, such as high absorptance, broad band, and wide absorption angle. However, excellent performances usually put forward higher requirements on structural designs, such as varying the geometry sizes or shapes to fit different center wavelengths, which inevitably increases the fabrication burden. Here, a planar sandwich structure involving a layer of highly lossy material is proposed to achieve a robust perfect absorption with 95% absorptance ranging from the visible to near infrared range. Such an excellent absorption performance is also polarization-independent and applicable to a wide incident angle. Furthermore, the proposed design can also be applied to conformal surfaces with a 90% fluctuation over a steep surface. We believe that the proposed perfect absorber with distinguished performances can find wide application. © 2020 by the authors.

Keyword :

Conformal surface; Epsilon-near-zero material; Lossy; Perfect absorber

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GB/T 7714 Zhang, L. , Wang, K. , Chen, H. et al. Robust conformal perfect absorber involving lossy ultrathin film [J]. | Photonics , 2020 , 7 (3) .
MLA Zhang, L. et al. "Robust conformal perfect absorber involving lossy ultrathin film" . | Photonics 7 . 3 (2020) .
APA Zhang, L. , Wang, K. , Chen, H. , Zhang, Y. . Robust conformal perfect absorber involving lossy ultrathin film . | Photonics , 2020 , 7 (3) .
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Superior third-order nonlinearity in inorganic fullerene-like WS2 nanoparticles SCIE Scopus CSCD
期刊论文 | 2020 , 8 (12) , 1881-1887 | PHOTONICS RESEARCH
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Two-dimensional (2D) transition metal dichalcogenides (TMDs) attain increasing attention due to their exceptional nonlinear optical efficiencies, which hold promising potential for on-chip photonics and advanced opto-electronic applications. Planar TMDs have been proven to support orders-higher third-order nonlinear coefficients in comparison with common nonlinear materials. Interestingly, stronger light-matter interaction could be motivated when curved features are introduced to 2D TMDs. Here, a type of inorganic fullerene-like WS2 nanoparticles is chemically synthesized using hard mesoporous silica. By using the spatial self-phase modulation (SSPM) method, the nonlinear refractive index n(2) and third-order susceptibility. chi((3)) are investigated in the visible range. It is found that n(2)similar to 10(-5) cm(2)/W and chi((3))similar to 10(-7) esu, two orders higher than the counterparts of planar WS2 structures. Our experimental findings provide a fresh thinking in designing nonlinear optical materials and endow TMDs with new potentials in photonic integration applications. (C) 2020 Chinese Laser Press

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GB/T 7714 Li, Tianlun , Hao, Rui , Zhang, Lingling et al. Superior third-order nonlinearity in inorganic fullerene-like WS2 nanoparticles [J]. | PHOTONICS RESEARCH , 2020 , 8 (12) : 1881-1887 .
MLA Li, Tianlun et al. "Superior third-order nonlinearity in inorganic fullerene-like WS2 nanoparticles" . | PHOTONICS RESEARCH 8 . 12 (2020) : 1881-1887 .
APA Li, Tianlun , Hao, Rui , Zhang, Lingling , Mao, Jianyong , Li, Feng , Zhang, Yanpeng et al. Superior third-order nonlinearity in inorganic fullerene-like WS2 nanoparticles . | PHOTONICS RESEARCH , 2020 , 8 (12) , 1881-1887 .
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Design and Implementation of Charging Pile in a Router-type DC Charging Station EI Scopus
会议论文 | 2020 , 1270-1275 | 15th IEEE Conference on Industrial Electronics and Applications, ICIEA 2020
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In order to solve the problem of low charging power and efficiency of the charging piles for electric vehicles, a novel design scheme is proposed in parallel router-type highpower DC charging stations. Compared with existing design approaches, the proposed design scheme is more efficient and flexible with the consideration of the different parameters and requirements of the battery to be charged. The experimental results show that the proposed design scheme helps improve the power and charging rate of the charging device. © 2020 IEEE.

Keyword :

Charging (batteries) Piles Industrial electronics

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GB/T 7714 Du, Yudong , Aimin, Zhang , Zhang, Hang et al. Design and Implementation of Charging Pile in a Router-type DC Charging Station [C] . 2020 : 1270-1275 .
MLA Du, Yudong et al. "Design and Implementation of Charging Pile in a Router-type DC Charging Station" . (2020) : 1270-1275 .
APA Du, Yudong , Aimin, Zhang , Zhang, Hang , Wei, Zhang , Huang, Jingjing , Zhou, Yunhong et al. Design and Implementation of Charging Pile in a Router-type DC Charging Station . (2020) : 1270-1275 .
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