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Highly Conductive Zinc-Tin-Oxide Buffer Layer for Inverted Polymer Solar Cells

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功能材料信息 2016年第2期13卷 64-64页

作者： Leiming Yu Deying Luo Hai Wang Taoyu Zou Li Luo Zhenfang Qiao Yiji Yang Jianhong Zhao Taoling He Zhu Liu Zheng-Hong Lu Key Laboratory of Yunnan Provincial Higher Education Institutions for Organic Optoelectronic Materials and Devices Kunming University Department of Physics Yunnan University

Thin-films of Zinc Tin Oxide(ZTO)with an extremely high charge carrier mobility and superior optical transmittance are synthesized using a simple solution method.These ZTO films have been systematically studied for th... 详细信息

关键词：英语阅读理解纳米材料与技术

Nonfused-Core-Small-Molecule-Acceptor-Based Polymer Acceptors for All-Polymer Solar Cells

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Chinese Journal of Polymer Science 2022年第8期40卷 960-967,I0010页

作者： Xian-Ming Zhu Su-Nan Bao Hang Yang Hong-Yu Fan Chen-Ling Fan Xiao-Xiao Li Ke-Wei Hu Hao-Yu Cao Chao-Hua Cui Yong-Fang Li laboratory of Advanced optoelectronic materials Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and DevicesCollege of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhou215123China Beijing National laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China

Polymerizing the narrow bandgap small-molecule architecture with a conjugated linking unit(or called the polymerized small molecule acceptors(PSMAs))is a promising strategy to design polymer acceptors for efficient all polymer solar cells(all-PSCs).Currently,the fused-ring-based small molecule acceptors(SMAs)are preferred monomers to design efficient PSMAs,leaving the challenge of reducing the materials cost.In this work,we firstly employ nonfused-core SMA with simple synthetic procedures to design PSMAs(namely PBTI-H,PBTI-F and PBTI-Cl)to address this issue.Relative to the fused-ring based counterparts,these three PSMAs exhibit much higher figure-of-merit value.Additionally,a power-conversion efficiency of 8.80%is achieved in the PBTI-Cl-based all-PSC.The results offer an attractive approach to design low-cost PSMAs for efficient all-PSCs.

关键词： Polymer solar cells Polymer acceptor Low cost Power-conversion efficiency

Tandem organic solar cells with 20.6% efficiency enabled by reduced voltage losses

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National Science Review 2023年第6期10卷 215-225页

作者： Jianqiu Wang Zhong Zheng Pengqing Bi Zhihao Chen Yafei Wang Xiaoyu Liu Shaoqing Zhang Xiaotao Hao Maojie Zhang Yongfang Li Jianhui Hou State key laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences laboratory of Advanced optoelectronic materials Suzhou Key Laboratory of Novel Semiconductoroptoelectronics Materials and Devices College of Chemistry Chemical Engineering and Materials Science Soochow University School of Chemistry and Biology Engineering University of Science and Technology Beijing School of Physics State Key Laboratory of Crystal Materials Shandong University University of Chinese Academy of Sciences CAS key laboratory of organic Solids Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences

Large voltage losses are the main obstacle for achieving high efficiency in organic solar cells(OSCs).Here we construct ternary OSCs by introducing an asymmetric small molecule acceptor AITC into PBDB-TCl:BTP-eC9 system and demonstrate the effectiveness in simultaneously decreasing energy disorder and non-radiative voltage losses.It is found that the introduction of AITC can modify domain size and increase the degree of crystallinity,which enhances open-circuit voltage and power conversion efficiency(19.1%,certified as 18.9%).Inspiringly,an output efficiency of 20.6% of the constructed tandem OSCs based on PBDB-TCl:AITC:BTP-eC9 ternary active layer output a recorded efficiency of 20.6%(certified as 20.3%),which is the highest value in OSCs field to date.This work demonstrates that decreasing the voltage losses by ternary strategy and constructing of tandem architecture are effective approaches towards improving photovoltaic performance.

关键词： organic solar cells power conversion efficiency voltage losses tandem cells ternary strategy

Review of roll-to-roll fabrication techniques for colloidal quantum dot solar cells

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Journal of Electronic Science and Technology 2023年第1期21卷 1-25页

作者： Yin-Fen Ma You-Mei Wang Jia Wen Ao Li Xiao-Liang Li Mei Leng Yong-Biao Zhao Zheng-Hong Lu key laboratory of yunnan provincial higher education institutions for optoelectronics Device Engineering Department of PhysicsSchool of Physics and AstronomyYunnan UniversityKunming650091China International Joint Research Center for optoelectronic and Engineering Research Yunnan UniversityKunming650091China Department of materials Science and Engineering University of TorontoTorontoM5S 3E4Canada

Colloidal quantum dots(CQDs)are of great interest to photovoltaic(PV)technologies as they possess the benefits of solution-processability,size-tunability,and roll-to-roll manufacturability,as well as unique capabilities to harvest near-infrared(NIR)radiation.During the last decade,lab-scale CQD solar cells have achieved rapid improvement in the power conversion efficiency(PCE)from~1%to 18%,which will potentially exceed 20%in the next few years and approach the performance of other PV technologies,such as perovskite solar cells and organic solar cells.In the meanwhile,CQD solar cells exhibit long lifetimes either under shelf storage or continuous operation,making them highly attractive to industry.However,in order to meet the industrial requirements,mass production techniques are necessary to scale up the fabrication of those lab devices into large-area PV modules,such as roll-to-toll coating.This paper reviews the recent developments of large-area CQD solar cells with a focus on various fabrication methods and their principles.It covers the progress of typical large-area coating techniques,including spray coating,blade coating,dip coating,and slot-die coating.It also discusses next steps and new strategies to accomplish the ultimate goal of the low-cost large-area fabrication of CQD solar cells and emphasizes how artificial intelligence or machine learning could facilitate the developments of CQD solar cell research.

关键词： Colloidal quantum dots(CQDs) Large-area fabrication Roll-to-roll Solar cells

Effects of Heteroatom Substitution on the Photovoltaic Performance of Donor materials in organic Solar Cells

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Accounts of materials Research 2021年第11期2卷 986-997页

作者： Hang Yang Chaohua Cui Yongfang Li laboratory of Advanced optoelectronic materials Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and DevicesCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Beijing National laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

CONSPECTUS:Over the past few years,the innovation of narrow bandgap acceptor combined with wide bandgap donor materials significantly promotes the power conversion efficiencies(PCEs)of organic solar cells(OSCs)to exceed 18%.To build a state-of-the-art OSC,absorption spectra,frontier molecular orbital energy levels,molecular packing and crystallinity,and charge carrier mobilities of the photovoltaic materials should be considered in their molecular design.The donor and acceptor materials are the key components determining the photovoltaic performance of the OSCs.The side chain engineering on the conjugated backbone is a critical strategy to optimize the photovoltaic properties of the donor materials.In this Account,we focus on the topic of heteroatom substitution on the molecular backbone of the donor materials for improving their photovoltaic performance,aiming to provide in-depth understanding of the molecular structure optimization for the design of stateof-the-art photovoltaic materials.

关键词： materials donor backbone

Synergistic effect of solvent and solid additives on morphology optimization for high-performance organic solar cells

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Science China Chemistry 2021年第11期64卷 2017-2024页

作者： Chenling Fan Hang Yang Qing Zhang Sunan Bao Hongyu Fan Xianming Zhu Chaohua Cui Yongfang Li laboratory of Advanced optoelectronic materials Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and DevicesCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou215123China Beijing National laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China Vacuum Interconnected Nanotech Workstation Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou215123China

Controlling the photoactive layer morphology towards nanoscale bi-continuous donor/acceptor interpenetrating networks is a key issue to build high-performance organic solar cells(OSCs).Due to the distinct properties between donor and acceptor materials,casting an active layer from a single solvent solution usually results in either insufficient or excessive phase separation that reduces the device performance.In comparison to the fullerene acceptors with closed-cage structures,the currently dominant non-fullerene acceptors possess the similar anisotropicπ-πinteractions with p-type organic semiconductor donors,giving rise to the complexity of the morphology regulation.Herein,we employ 4,4′-dimethoxyoctafluorobiphenyl(OFP)with strong crystallinity as a volatile solid additive to optimize the active layer morphology of OSCs.The synergistic effect of 1-chloronaphthalene(CN)and OFP as dual additives shows supreme capability on optimizing the morphology over the conventional additive of CN,which is in favor of improving charge transport and suppressing charge recombination for higher fill factors in various systems.In particular,the PTQ10:m-BTP-C6 Ph-based device processed by the additive showed a remarkable powerconversion efficiency(PCE)of 17.74%,whereas the control device processed by CN additive yielded a relatively lower PCE of16.45%.

关键词： organic solar cells bulk-heterojunction morphology power conversion efficiency solid additive

Highly luminescent zero-dimensional lead-free manganese halides forβ-ray scintillation

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Nano Research 2022年第9期15卷 8486-8492页

作者： Linyuan Lian Wei Qi Huaiyi Ding Hao Tian Qi Ye Yong-Biao Zhao Long Zhao Jianbo Gao Daoli Zhang Jianbing Zhang School of Optical and Electronic Information Huazhong University of Science and Technology1037 Luoyu RoadWuhan 430074China Hubei key laboratory of Bioinorganic Chemistry&Materia Medica School of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China key laboratory of yunnan provincial higher education institutions for optoelectronics Device Engineering School of Physics and AstronomyYunnan UniversityKunming 650504China State key laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China Department of Physics and Astronomy Ultrafast Photophysics of Quantum Devices LaboratoryClemson UniversityClemsonSC 29634USA Wuhan National laboratory for optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Shenzhen Huazhong University of Science and Technology Research Institute Shenzhen 518057China

Because of their moderate penetration power,β-rays(high-energy electrons)are a useful signal for evaluating the surface contamination of nuclear radiation.However,the development ofβ-ray scintillators,which convert the absorbed high-energy electrons into visible photons,is hindered by the limitations of materials selection.Herein,we report two highly luminescent zerodimensional(0D)organic-inorganic lead-free metal halide hybrids,(C_(13)H_(30)N)_(2)MnBr_(4)and(C_(19)H_(34)N)_(2)MnBr_(4),as scintillators exhibiting efficientβ-ray scintillation.These hybrid scintillators combine the superior properties of organic and inorganic components.For example,organic components that contain light elements C,H,and N enhance the capturing efficiency ofβparticles;isolated inorganic[MnBr_(4)]2−tetrahedrons serve as highly localized emitting centers to emit intense radioluminescence(RL)underβ-ray excitation.Both hybrids show a narrow-band green emission peaked at 518 nm with photoluminescence quantum efficiencies(PLQEs)of 81.3%for(C_(13)H_(30)N)_(2)MnBr_(4)and 86.4%for(C_(19)H_(34)N)_(2)MnBr_(4),respectively.To enable the solution processing of this promising metal halide hybrid,we successfully synthesized(C_(13)H_(30)N)_(2)MnBr_(4)colloidal nanocrystals for the first time.Being excited byβ-rays,(C_(13)H_(30)N)_(2)MnBr_(4)scintillators show a linear response toβ-ray dose rate over a broad range from 400 to 2,800 Gy·s^(−1),and also display robust radiation resistance that 80%of the initial RL intensity can be maintained after an ultrahigh accumulated radiation dose of 240 kGy.This work will open up a new route for the development ofβ-ray scintillators.

关键词： zero-dimensional metal halide hybrids radiation sterilization β-ray scintillation nanocrystals

Modulating Crystallinity and Miscibility via Side-chain Variation Enable High Performance All-Small-Molecule organic Solar Cells

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Chinese Journal of Chemistry 2021年第8期39卷 2147-2153页

作者： Yang Wang Qunping Fan Yulong Wang Jin Fang Qi Liu Lei Zhu Jinjing Qiu Xia Guo Feng Liu Wenyan Su Maojie Zhang laboratory of Advanced optoelectronic materials College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu 215123China Department of Chemistry City University of Hong KongKowloon 999077Hong KongChina Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China Guangdong provincial key laboratory of Optical Fiber Sensing and Communications Siyuan LaboratoryDepartment of PhysicsJinan UniversityGuangzhouGuangdong 510632China

Side-chain engineering as one of the most important molecular design strategies has been widely used to improve photovoltaic effi-ciency of active layer materials.Herein,a series of acceptor-n-donor-n-acceptor typed small molecule(SM)-donors(SL1,SL2,SL3,and SL4),on the basis of high-performance SM-donor BTTzR(SL1)with thiazolo[5,4-d]thiazole as the n-bridging units and 3-butylrho-danine as the terminal electron-withdrawing groups,were designed and synthesized to study the effect of the side-chain substitu-tions of BDT-T on the photovoltaic performanee.

关键词： organic solar cells Small molecule donor Substituent effects Aggregation Solvent effects

Achieving 16.68% efficiency ternary as-cast organic solar cells

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Science China Chemistry 2021年第4期64卷 581-589页

作者： Ruijie Ma Yang Tao Yuzhong Chen Tao Liu Zhenghui Luo Yuan Guo Yiqun Xiao Jin Fang Guangye Zhang Xiaojun Li Xia Guo Yuanping Yi Maojie Zhang Xinhui Lu Yongfang Li He Yan Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration&Reconstruction Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina College of New materials and New Energies Shenzhen Technology UniversityShenzhen 518118China School of Light Industry and Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China Department of Physics Chinese University of Hong KongNew TerritoriesHong KongChina laboratory of Advanced optoelectronic materials College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Institute of Polymer optoelectronic materials and devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640China Beijing National laboratory for Molecular Science Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Hong Kong University of Science and Technology-Shenzhen Research Institute Shenzhen 518057China eFlexPV Limited Flat/RM B12/FHang Seng Causeway Bay BLDGCauseway BayHong KongChina Centre for Mechanical Technology and Automation Department of Mechanical EngineeringUniversity of AveiroAveiroPortugal

State-of-the-art organic solar cells(OSCs)often require the use of high-boiling point additive or post-treatment such as temperature annealing and solvent vapor annealing to achieve the best efficiency.However,additives are not desirable in largescale industrial printing process,while post-treatment also increases the production cost.In this article,we report highly efficient ternary OSCs based on PM6:BTP-Cl Br1:BTP-2O-4Cl-C12(weight ratio=1:1:0.2),with 16.68%power conversion efficiency(PCE)for as-cast device,relatively close to its annealed counterpart(17.19%).Apart from obvious energy tuning effect and complementary absorption spectra,the improved PCE of ternary device is mainly attributed to improved morphological properties including the more favorable materials miscibility,crystallinity,domain size and vertical phase separation,which endorse suppressed recombination.The result of this work provides understanding and guidance for high-performance as-cast OSCs through the ternary strategy.

关键词： organic solar cells as-cast ternary morphology high-performance