检索结果-南通市图书馆

Random Terpolymer Based on Simple Siloxane-functionalized Thiophene Unit Enabling High-performance Non-fullerene Organic Solar Cells

引用

Chinese Journal of Polymer Science 2024年第3期42卷 311-321,I0006页

作者： Fuliang Cheng Shiting Lai Yihan Zhang Ling Xue Xinxin Xia Peipei Zhu xinhui lu Xunfan Liao Yiwang Chen National Engineering Research Center for Carbohydrate Synthesis/Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education College of Chemistry and Chemical EngineeringJiangxi Normal UniversityNanchang 330022China Department of Physics Chinese University of Hong Kong New TerritoriesHong Kong 999077China Institute of Polymers and Energy Chemistry(IPEC)/Jiangxi Provincial Key Laboratory of New Energy Chemistry Nanchang UniversityNanchang 330031China

Incorporation of siloxane-functionalized units into polymers backbone has proven to be an efficient strategy to improve photovoltaic performance. In this work, a low-cost siloxane-containing unit was developed to construct a series of terpolymers, and the effects of siloxane on the polymer performance were systematically studied. Different contents of thiophene containing siloxane-functionalized side chain were introduced into PM6 to obtain a series of polymers(PM6, PM6-SiO-10, PM6-SiO-20 and PM6-SiO-30). The siloxane-functionalized side chains in polymers have only a slight effect on the absorption behavior and frontier molecular orbitals. However, when the siloxane content increased, the terpolymers' aggregation property decreased and the temperature-dependency increased, leading to improved donor-acceptor compatibility. The power conversion efficiency(PCE) based on PM6:Y6, PM6-SiO-20:Y6 and PM6-SiO-30:Y6 devices was 15.64%, 16.03% and 15.82%, respectively. In comparison, the active layer based on PM6-SiO-10:Y6 exhibits the most appropriate phase separation morphology, resulting in effective exciton dissociation, more balanced hole-electron transport and less recombination. Consequently, the highest PCE of 16.69% with an outstanding shortcircuit current density of 26.96 mA·cm^(-2) was obtained, which are one of the highest values for siloxane-functionalized polymer-based devices.This work demonstrates that finely controlling the content of siloxane-functionalized thiophene is beneficial for obtaining high-performance terpolymer donors and provides a novel and low-cost method to improve photovoltaic performance.

关键词： Organic solar cells Terpolymers Siloxane-functionalized unit Low-cost Morphology

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effects of Thieno[3,2-b]thiophene Number on Narrow-Bandgap Fused-Ring Electron Acceptors

引用

Chinese Journal of Polymer Science 2022年第8期40卷 914-920,I0008页

作者： Tengfei Li Guilong Cai Yuze Lin xinhui lu Xiaowei Zhan Key Laboratory of Polymer Chemistry and Physics of Ministry of Education School of Materials Science and EngineeringPeking UniversityBeijing100871China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China Department of Physics The Chinese University of Hong KongHong Kong999077China

We synthesize and compare four near-infrared absorbing fused-ring electron acceptors named as nTTIC(n=2,3,4,and 5),based on different number of thieno[3,2-b]thiophene(TT)unit as the electron-donating core.With increasing the TT unit,absorption spectrum of the TTIC series red shifts,and the highest occupied molecular orbital(HOMO)upshifts notably.It is worth noting that 4TTIC and 5TTIC exhibit absorption edges approaching 1100 nm,which is the photoresponse limit of solar cells based on crystal silicon.When the TTIC series acceptors are blended with polymer donor PM6,the binary-blend organic solar cells based on 3TTIC show the best power conversion efficiency(PCE)of 13.1%.In contrast,2TTIC-based devices exhibit relatively lower PCE of 8.32%,mainly caused by the larger energy loss and blue-shifted absorption.Due to insufficient driving force of charge separation caused by very high HOMO,4TTIC and 5TTIC show poor PCEs lower than 3%.

关键词： Thieno[3,2-b]thiophene Near-infrared absorption Fused-ring electron acceptor Nonfullerene Organic solar cell

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

π-Extended End Groups Enable High-Performance All-Polymer Solar Cells with Near-Infrared Absorption

引用

Chinese Journal of Chemistry 2023年第23期41卷 3261-3267页

作者： Linfeng Yu Haiqin Xiao Yu Shi Xia Guo Xinxin Xia xinhui lu Maojie Zhang Laboratory of Advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and Devices College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu215123 China National Engineering Research Center for Colloidal Materials School of Chemistry & Chemical EngineeringShandong UniversityJinanShandong250100 China Department of Physics Chinese University of Hong KongNew TerritoriesHong Kong999077 China

Narrow-bandgap n-type polymers are essential for advancing the development of all-polymer solar cells(all-PSCs).Herein,we developed a novel polymer acceptor PNT withπ-extended 2-(3-oxo-2,3-dihydro-1H-cyclopenta[b]naphthalen-1-ylidene)malononitrile(CPNM)end groups.Compared to commonly used 2-(3-oxo-2,3-dihydro-1H-cyclopenta[b]naphthalen-1ylidene)malononitrile(IC)units,CPNM units have a further extended fused ring,providing the PNT polymer with extended absorption into the near-IR region(903 nm)and exhibiting a narrow optical bandgap(1.37 eV).Furthermore,PNT exhibits a high electron mobility(6.79×10^(−4) cm^(2)·V^(−1)·S^(−1))and a relatively high-lying lowest unoccupied molecular orbital(luMO)energy level of−3.80 eV.When blended with PBDB-T,all-PSC achieves a power conversion efficiency(PCE)of 13.7%and a high short-circuit current density(JSC)of 24.4 mA·cm^(−2),mainly attributed to broad absorption(600—900 nm)and efficient charge separation and collection.Our study provides a promising polymer acceptor for all-PSCs and demonstrates thatπ-extended CPNM units are important to achieve high-performance for all-PSCs.

关键词： Polymer acceptors π-Extended end groups High short-circuit current density Narrow-bandgap All-polymer solar cells

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Alkyl side chain engineering enables high performance as-cast organic solar cells of over 17%efficiency

引用

Fundamental Research 2023年第4期3卷 611-617页

作者： Xiang Xu Yazhou Qi Xiaoyan luo Xinxin Xia xinhui lu Jun Yuan Yonghua Zhou Yingping Zou State Key Laboratory of Powder Metallurgy College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China Department of Physics The Chinese University of Hong KongNew TerritoriesHong Kong 999077China

Achieving high-performance as-cast OSCs is crucial for industrialization in the future,owing to the advantages of better stability,environmental-friendly,and decreasing production cost.In this regard,we synthesized an ADA′D-A type acceptor,Y6-eC6-BO,by shortening the straight alkyl side-chains on the thiophene position from C_(11) to C_(6) as well as lengthening the branched alkyl side-chains on the pyrrole position of Y6 to achieve a stronger crystallization and better miscibility than Y6.As a result,the corresponding chloroform-processed as-cast PM6:Y6-eC6-BO OSC showed a high PCE of 17.33%,which was one of the highest efficiencies of as-cast OSCs.And the as-cast PM6:Y6-eC6-BO OSCs processed from o-xylene displayed a PCE of 16.38%,as far as we know,this is among the highest efficiencies of non-halogenated-solvent processed as-cast OSCs.These results demonstrated tailoring the alkyl side-chain of NFAs is a feasible and simple approach to achieve high performance as-cast OSCs and provides guideline in molecular design in the future.

关键词： Organic solar cells Alkyl side chains As-cast Green solvent Stability

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Synergetic Alkoxy Side-Chain and Chlorine-Contained End Group Strategy toward High Performance Ultra-Narrow Bandgap Small Molecule Acceptors

引用

Chinese Journal of Chemistry 2023年第20期41卷 2664-2670页

作者： Qingya Wei Songting Liang Beibei Qiu Wei Liu Xiang Xu xinhui lu Yuang Fu Jun Yuan Yingping Zou State Key Laboratory of Powder Metallurgy College of Chemistry and Chemical EngineeringCentral South UniversityChangsha Hunan 410083China Key Laboratory of Solid State Optoelectronic Devicesof Zhejiang Province College of Physics and Electronic Information EngineeringZhejiang Normal UniversityJinhuaZhejiang 321004China Departmentof Physics The Chinese University of Hong KongNew TerritoriesHong Kong 999077China School of Materials Science and Engineering Zhengzhou UniversityZhengzhouHenan 450001China

Ultra-narrow bandgap(ultra-NBG)small molecule acceptors(SMAs)show great potential in organic solar cells(OSCs)due to the extended near-infrared(NIR)absorption.In this work,a synergetic alkoxy side-chain and chlorine-contained end group strategy is employed to achieve A-DA'D-A type ultra-NBG SMAs by introducing alkoxy chains with oxygen atom at the second position into the thiopheneβposition as well as replacing the F atoms with Cl atoms in the end group.As a result,the heptacyclic BZO-4F shows a redshifted absorption onset(960 nm)compared with Y11(932 nm)without oxygen atoms in the side chains.Then,the fluorinated end groups are substituted with the chlorinated ones to synthesize BZO-4Cl.The absorption onset of BZO-4Cl is further redshifted to 990 nm,corresponding to an optical ultra-NBG of 1.25 eV.When blending with the polymer donor PBDB-T,the binary devices based on PBDB-T:BZO-4F and PBDB-T:BZO-4Cl deliver power conversion efficiencies(PCEs)over 12%.Furthermore,ternary devices with the addition of BZ4F-O-1 into PBDB-T:BZO-4Cl system achieve the optimal PCE of 15.51%.This work proposes a synergetic alkoxy side-chain and chlorine-contained end group strategy to achieve A-DA'D-A type ultra-NBG SMAs,which is important for future molecular design.

关键词： Organic solar cells A-DA'D-A type small molecule acceptors Ultra-narrow bandgap Alkoxy side chains Ternary strategy π-πstacking

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Solid Additive-Assisted Layer-by-Layer Processing for 19%Efficiency Binary Organic Solar Cells

引用

Nano-Micro Letters 2023年第7期15卷 16-29页

作者： Guanyu Ding Tianyi Chen Mengting Wang Xinxin Xia Chengliang He Xiangjun Zheng Yaokai Li Di Zhou xinhui lu Lijian Zuo Zhikang Xu Hongzheng Chen State Key Laboratory of Silicon Materials Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Department of Physics The Chinese University of Hong KongNew TerritoriesHong Kong 999077People’s Republic of China Zhejiang University-Hangzhou Global Scientific and Technological Innovation Center Hangzhou 310014People’s Republic of China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province Zhejiang UniversityHangzhou 310027People’s Republic of China

Morphology is of great significance to the performance of organic solar cells(OSCs),since appropriate morphology could not only promote the exciton dissociation,but also reduce the charge recombination.In this work,we have developed a solid additive-assisted layer-by-layer(SAA-LBL)processing to fabricate high-efficiency OSCs.By adding the solid additive of fatty acid(FA)into polymer donor PM6 solution,controllable pre-phase separation forms between PM6 and FA.This intermixed morphology facilitates the diffusion of acceptor Y6 into the donor PM6 during the LBL processing,due to the good miscibility and fast-solvation of the FA with chloroform solution dripping.Interestingly,this results in the desired morphology with refined phase-separated domain and vertical phase-separation structure to better balance the charge transport/collection and exciton dissociation.Consequently,the binary single junction OSCs based on PM6:Y6 blend reach champion power conversion efficiency(PCE)of 18.16%with SAA-LBL processing,which can be generally applicable to diverse systems,e.g.,the PM6:L8-BO-based devices and thick-film devices.The efficacy of SAA-LBL is confirmed in binary OSCs based on PM6:L8-BO,where record PCEs of 19.02%and 16.44%are realized for devices with 100 and 250 nm active layers,respectively.The work provides a simple but effective way to control the morphology for high-efficiency OSCs and demonstrates the SAA-LBL processing a promising methodology for boosting the industrial manufacturing of OSCs.

关键词： Organic solar cells Fatty acid Solid additive Layer-by-layer Vertical phase separation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Air-Processed Efficient Organic Solar Cells from Aromatic Hydrocarbon Solvent without Solvent Additive or Post-Treatment:Insights into Solvent Effect on Morphology

引用

Energy & Environmental Materials 2022年第3期5卷 977-985页

作者： Ruijie Ma Tao Yang Yiqun Xiao Tao Liu Guangye Zhang Zhenghui luo Gang Li xinhui lu He Yan Bo Tang College of Chemistry Chemical Engineering and Materials ScienceKey Laboratory of Molecular and Nano ProbesMinistry of EducationCollaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of ShandongInstitute of Materials and Clean EnergyShandong Provincial Key Laboratory of Clean Production of Fine ChemicalsShandong Normal UniversityJinan 250014China College of New Materials and New Energies Shenzhen Technology UniversityShenzhen 518118 China Department of Chemistry Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional MaterialsEnergy Institute and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration&ReconstructionHong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina Department of Physics Chinese University of Hong KongNew Territories Hong KongChina Hong Kong University of Science and Technology-Shenzhen Research Institute No.9 Yuexing first RDHi-tech ParkNanshanShenzhen 518057China Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology(SCUT)Guangzhou 510640China

Most of the recent organic solar cells(OSCs)with top-of-the-line efficiencies are processed from organic solvents with a high vapor pressure such as CF in nitrogen-filled glovebox,which is not feasible for large-area manufacturing.Herein,we cast active layers with both aromatic hydrocarbon solvents and halogenated solvents without any solvent additive or post-treatment,as well as interlayers with water and methanol in air(35%relative humidity)for efficient OSCs,except cathode electrode's evaporation is in vacuum.Compared to the PM6:Y6 system that is processed from CF,the PM6:BTP-ClBr2 system demonstrates good efficiency of 16.28%processed from CB and the device based on PM6:BTP-4Cl achieves 16.33%using TMB as its solvent for the active layer.These are among the highest efficiencies for CB-and TMB-processed binary OSCs to date.The molecular packing and phase separation length scales of each combination depend strongly on the solvent,and the overall morphology is the result of the interplay between solvent evaporation(kinetics)and materials miscibility(thermodynamics).Different solvents are required to realize the optimal morphology due to the different miscibility between the donor and acceptor.Finally,17.36%efficiency was achieved by incorporating PC71BM for TMB-processed devices.Our result provides insights into the effect of processing solvent and shows the potential of realizing high-performance OSCs in conditions relevant for industrial fabrication.

关键词： air-processing aromatic hydrocarbon solvent efficiency morphology organic solar cells

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Enhancing Photovoltaic Performance of Asymmetric Fused-Ring Electron Acceptor by Expanding Pyrrole to Pyrrolo[3,2-b]pyrrole

引用

Chinese Journal of Chemistry 2022年第24期40卷 2861-2866页

作者： Zemin Wang Guilong Cai Peiyao Xue Zesheng Liu Boyu Jia Nan Li Jiayu Wang xinhui lu Yuze Lin Guojie Wang Xiaowei Zhan School of Materials Science and Engineering University of Science and Technology BeijingBeijing100083 China Key Laboratory of Polymer Chemistry and Physics of Ministry of Education School of Materials Science and EngineeringPeking UniversityBeijing100871 China Department of Physics The Chinese University of Hong KongNew Territories999077 Hong KongChina Chinese Academy of Sciences Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Organic SolidsInstitute of ChemistryBeijing100190 China

We propose a strategy to improve performance of unidirectionally extended fused-ring electron acceptors by using pyrrolo[3,2-b]pyrrole to replace pyrrole ring, and design two asymmetric nonfullerene acceptors 1PIC and 2PIC. Replacing pyrrole in 1PIC with pyrrolo[3,2-b]pyrrole remarkably red-shifts absorption peak by 109 nm, elevates the HOMO and luMO energy levels, and improves electron mobility. The photovoltaic devices based on blend of PM6 donor and 2PIC acceptor exhibit power conversion efficiency as high as 12.6%, which is much higher than that of PM6:1PIC (3.53%), due to more efficient exciton generation and dissociation, faster and more balanced carrier transport and less charge recombination.

关键词： Energy conversion Fused-ring electron acceptor Pyrrolo[3,2-b]pyrrole Asymmetric synthesis Semiconductors

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Non-fused medium bandgap electron acceptors for efficient organic photovoltaics

引用

Journal of Energy Chemistry 2022年第7期31卷 576-582,I0014页

作者： Tian-Jiao Wen Jiale Xiang Nakul Jain Zhi-Xi Liu Zeng Chen Xinxin Xia xinhui lu Haiming Zhu Feng Gao Chang-Zhi Li State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027ZhejiangChina Department of Physics Chemistry and Biology(IFM) Link?ping UniversityLinköping SE-58183Sweden Department of Chemistry Zhejiang UniversityHangzhou 310027ZhejiangChina Department of Physics The Chinese University of Hong KongNew TerritoriesHong Kong 999077China

The cost-effective organic semiconductors are strongly needed in organic photovoltaics(OPVs). Herein,two medium bandgap(MBG) electron acceptors, TPT4F and TPT4Cl are developed via the new design of multi-noncovalent interaction assisted unfused core, flanked with two electron withdrawing end groups. These fullly non-fused MBG acceptors adapt the planar and rigid conformation in solid, therefore exhibiting the ordered face-on stacking and strong photoluminescence in films. As results, TPT4Cl^(-)based OPVs, upon blending with the PBDB-TF polymer donor, have achieved a power conversion efficiency of 10.16% with a low non-radiative loss of 0.27 e V, representing one of the best fullly non-fused medium bandgap acceptors with desirable cost-efficiency balance.

关键词： Organic photovoltaic Medium bandgap Electron withdrawing unit Non-covalent interaction

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Optimizing side chains on different nitrogen aromatic rings achieving 17% efficiency for organic photovoltaics

引用

Journal of Energy Chemistry 2022年第2期31卷 173-178页

作者： Zhe Li Can Zhu Jun Yuan Liuyang Zhou Wei Liu Xinxin Xia c Juan Hong Honggang Chen Qingya Wei xinhui lu Yongfang Li Yingping Zou College of Chemistry and Chemical Engineering Central South UniversityChangsha 410000HunanChina CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of SciencesBeijing 100000China Department of Physics The Chinese University of Hong KongHong Kong 999077China

Balancing charge generation and low energy loss(E_(loss)), especially in the wide spectral absorption region is critical to obtain high-performance organic photovoltaics(OPVs). Therefore, Y11-M and Y11-EB are designed and synthesized through modifying alkyl chains on different nitrogen aromatic rings of the reported non-fullerene acceptor Y11. Although all the molecules have almost similar low band-gap(around 1.30 e V), Y11-M and Y11-EB exhibit wider absorption in 410–870 nm region. Eventually, the conventional devices based on Y11-M and Y11-EB possess more efficient charge generation with low Eloss(around 0.44 e V). In addition, outstanding efficiencies of 16.64% and 17.15% with the fill factor of 76.15% and 74.73% are obtained in PM6:Y11-M and PM6:Y11-EB-based devices, both higher than Y11:PM6. The results highlight the importance of rational alkyl chains optimization, and a good structureproperty relationship is established as well.

关键词： Fused-ring benzotriazole Side chains modification Low band-gap acceptors High-efficiency organic photovoltaics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：