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An Unprecedented Efficiency with Approaching 21%Enabled by Additive‑Assisted Layer‑by‑Layer Processing in Organic Solar Cells

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Nano-Micro Letters 2025年第2期17卷 372-375页

作者： Shuai Xu youdi zhang Yanna Sun Pei Cheng Zhaoyang Yao Ning Li Long Ye Lijian Zuo Ke Gao Key Laboratory of Advanced Green Functional Materials College of ChemistryChangchun Normal UniversityChangchun 130032People’s Republic of China Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion School of Chemistry and Chemical EngineeringShandong UniversityQingdao 266237People’s Republic of China College of Polymer Science and Engineering Sichuan UniversityChengdu 610065People’s Republic of China State Key Laboratory and Institute of Elemento‑Organic Chemistry Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsRenewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071People’s Republic of China Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640People’s Republic of China Tianjin Key Laboratory of Molecular Optoelectronic Sciences School of Materials Science and EngineeringTianjin UniversityTianjin 300350People’s Republic of China State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China

Recently published in Joule,Feng Liu and colleagues from Shanghai Jiaotong University reported a record-breaking 20.8%power conversion efficiency in organic solar cells(OSCs)with an interpenetrating fibril network active layer morphology,featuring a bulk p-in structure and proper vertical segregation achieved through additive-assisted layer-by-layer *** optimized hierarchical gradient fibrillar morphology and optical management synergistically facilitates exciton diffusion,reduces recombination losses,and enhances light capture *** approach not only offers a solution to achieving high-efficiency devices but also demonstrates the potential for commercial applications of OSCs.

关键词： Organic solar cells Additive-assisted layer-by-layer processing Three-dimensional fibril morphology Bulk p-i-n structure Optical management

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PRINCIPLES FOR OPTIMUM DESIGN OF OPEN PIT MINES

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中国有色金属学会会刊：英文版 1997年第1期7卷 2-5页

作者： Shi, Zhongmin Feng, Zhongren Xu, Changyou zhang, youdi Wuhan Univ of Technology Wuhan China

ＰＲＩＮＣＩＰＬＥＳＦＯＲＯＰＴＩＭＵＭＤＥＳＩＧＮＯＦＯＰＥＮＰＩＴＭＩＮＥＳＳｈｉＺｈｏｎｇｍｉｎ，ＦｅｎｇＺｈｏｎｇｒｅｎ，ＸｕＣｈａｎｇｙｏｕＤｅｐａｒｔｍｅｎｔｏｆＭｉｎｅｒａｌＲｅｓｏｕｒｃｅａｎｄＥｎｖ... 详细信息

ＰＲＩＮＣＩＰＬＥＳＦＯＲＯＰＴＩＭＵＭＤＥＳＩＧＮＯＦＯＰＥＮＰＩＴＭＩＮＥＳＳｈｉＺｈｏｎｇｍｉｎ，ＦｅｎｇＺｈｏｎｇｒｅｎ，ＸｕＣｈａｎｇｙｏｕＤｅｐａｒｔｍｅｎｔｏｆＭｉｎｅｒａｌＲｅｓｏｕｒｃｅａｎｄＥｎｖｉｒｏｎｍｅｎｔＥｎｇｉｎｅｅｒｉ...

关键词： open pit limit optimum design numerical method design criterion basic principle

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A record-breaking high efficiency facilitated by hierarchical morphology in all polymer solar cells

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Journal of Energy Chemistry 2023年第12期87卷 460-461,I0012页

作者： Yingyue zhang Wentao Zou youdi zhang Pei Cheng Long Ye Ke Gao College of Chemistry Key Laboratory of Advanced Green Functional MaterialsChangchun Normal UniversityChangchun 130032JilinChina Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion Science Center for Material Creation and Energy ConversionInstitute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237ShandongChina College of Polymer Science and Engineering Sichuan UniversityChengdu 610065SichuanChina School of Materials Science and Engineering Tianjin Key Laboratory of Molecular Optoelectronic SciencesTianjin UniversityTianjin 300350China

Organic solar cells(OSCs) especially non-fullerene OSCs(NF-OSCs) are promising to become the next-generation of commercial applications and have received great attention from many researchers due to their typical adva... 详细信息

关键词： breaking polymer weight

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Additive-free non-fullerene organic solar cells with random copolymers as donors over 9% power conversion efficiency

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Chinese Chemical Letters 2019年第6期30卷 1161-1167页

作者： Meimei Wu Laitao Shi Yu Hu Lie Chen Ting Hu youdi zhang Zhongyi Yuan Yiwang Chen College of Chemistry Nanchang University Nanchang 330031 China Institute of Polymers and Energy Chemistry (IPEC) Nanchang University Nanchang 330031 China

In this study, a series of random conjugated polymers (PBDB-TBTn) as donors were designed and synthesized. In these polymers, benzodithiophene unit with thiophene conjugated side chains (BDT) are donor part, and two different content of benzo[1,2-c:4,5-c']dithiophene-4,8-dione (BDD) and difluorobenzothiadizole (BT) linked alkylthiophene are acceptor unit. Polymer solar cells (PSCs) were fabricated with ITIC as an acceptor, and over the power conversion efficiency (PCE) of 9%was obtained, with open circuit voltage (Voc) of 0.86 V, short-circuit current density (Jsc) of 16.84 mA/cm^2, and fill factor (FF) of 62.5%. These random conjugated polymers based solar cells are insensitive to solvent additives and thermal annealing. The performance of the device decreases gradually with the increasing of the proportion of fluorinated acceptor unit. The declining efficiency is due to the excessive fluorinated acceptor unit, which leads to over aggregated topography, destroys the effective charge transport pathways, and affects phase separation domain size between the donor and the acceptor. The phenomena are explained by the charge carrier recombination, atomic force microscope (AFM), and transmission electron microscope (TEM). These results indicate that proper addition of fluorinated acceptor units to build random copolymers can enhance the efficiency of organic photovoltaics toward additive-free and thermal annealing-free PSCs.

关键词： Random conjugated polymer Polymer solar cells Ternary conjugate polymers Non-fullerene organic photovoltaics

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Wide Band-gap Two-dimension Conjugated Polymer Donors with Different Amounts of Chlorine Substitution on Alkoxyphenyl Conjugated Side Chains for Non-fullerene Polymer Solar Cells

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Chinese Journal of Polymer Science 2020年第8期38卷 797-805,I0005页

作者： youdi zhang Yong Wang Ruijie Ma Zhenghui Luo Tao Liu So-Huei Kang He Yan Zhongyi Yuan Changduk Yang Yiwang Chen College of Chemistry Nanchang UniversityNanchang 330031China Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration&Reconstruction Hong Kong University of Science and Technology(HKUST)Clear Water BayKowloonHong KongChina Institute of Polymers and Energy Chemistry(IPEC) Nanchang UniversityNanchang 330037China Ulsan National Institute of Science and Technology(UNIST) UlsanRepublic of Korea Institute of Advanced Scientific Research(iASR) Jiangxi Normal UniversityNanchang 330022China

In this study,wide bandgap(WBG)two-dimensional(2D)copolymer donors(DZ1,DZ2,and DZ3)based on benzodithiophene(BDT)on alkoxyphenyl conjugated side chains without and with different amounts of chlorine atoms and difluorobenzotriazole(FBTZ)are designed and synthesized successfully for efficient non-fullerene polymer solar cells(PSCs).Three polymer donors DZ1,DZ2,and DZ3 display similar absorption spectra at 300-700 nm range with optional band-gap(Egopt)of 1.84,1.92,and 1.97 eV,*** with reported DZ1 without chlorine substitution,it is found that introducing chlorine atoms into the meta-position of the alkoxyphenyl group affords polymer possessing a deeper the highest occupied molecular orbital(HOMO)energy level,which can increase open circuit voltage(Voc)of PSCs,as well as improve hole ***-fullerene bulk heterojunction PSCs based on DZ2:MelC demonstrate a relatively high power conversion efficiency(PCE)of 10.22%with a Voc of 0.88 V,a short-circuit current density(Jsc)of 17.62 mA/cm^2,and a fill factor(FF)of 68%,compared with PSCs based on DZ1:MelC(a PCE of 8.26%)and DZ3:MelC(a PCE of 6.28%).The results imply that adjusting chlorine atom amount on alkoxyphenyl side chains based on BDT polymer donors is a promising approach of synthesizing electron-rich building block for high performance of PSCs.

关键词： Wide-bandgap copolymer Organic solar cells Polymer donors Chlorine substitution Nonfullerene polymer solar cells

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Reducing Energy Loss and Morphology Optimization Manipulated by Molecular Geometry Engineering for Hetero-junction Organic Solar Cells

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Chinese Journal of Chemistry 2020年第12期38卷 1553-1559页

作者： Guodong Xu Huan Rao Xunfan Liao youdi zhang Yuming Wang Zhi Xing Ting Hu Licheng Tan Lie Chen Yiwang Chen College of Chemistry/Institute of Polymers and Energy Chemistry(IPEC) Nanchang UniversityNonchongJiangxi 330031China Institute of Advanced Scientific Research(iASR) Jiangxi Normal University99 Ziyong AvenueNonchangJiangxi 330022China Department of Physics Chem istry and Biology(IFM) Linkoping UniversityLinkoping SE-58183Sweden

of main observation and conclusion Molecular geometry engineering is an efective strategy to control the micromorphology and molecularenergy level in organic photovoltaics(OPVs).Two novel copolymers based on alkysilyl-and chloride-functionalied benzodithiophene(BDT)were designed and synthesized for wide bandgap copolymer donor materials in *** was found that the two copolymers exhited distinctly different proper-ties in active layer when blended with fulerene-fre acceptor *** chloride-functionalited copolymer PBDTCI-TZ2 with deeper molecular energy leveland better coplanar structure induced more ordered aggregation in blend ***,the device based on PBDTC-TZ exhibits better energy alinmentwith IT-4F and smallr radiative ***,the non-radiative recombination of PBDTCI-TZ.T-4F based device is about 45 mV lowerthan the PBDTS-TZ/T-4F based device,contributing to a lower enery loss(Ein,and a higher open-cicut voltage(Vc).As a resut,the devices based onthe blend of ***-4F exhibit a high power conversion efficiency(PCE)of up to 12.2%with a high Vvoe of 0.837 Vv,higher than that of PBDTSi-TZ:IT-4F,of which the PCE is 11.2%with a Voc of 0.781V.

关键词： Molecular radiative furthermore

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Nonfullerene acceptors based on perylene monoimides

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Journal of Semiconductors 2022年第5期43卷 10-12页

作者： Yutong Ji Helong Bai Lixiu zhang youdi zhang Liming Ding College of Chemistry Changchun Normal UniversityChangchun 130032China Key Laboratory of Advanced Green Functional Materials Changchun Normal UniversityChangchun 130032China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China

Nonfullerene organic solar cells(NF-OSCs) have become a research hotspot, and the device efficiency has been constantly updated[1-14]. The efficiency of binary and ternary solar cells has exceeded 18%[15-17] and 19%[18], respectively. In the early study of OSCs, the development of organic acceptors lagged behind that of organic donors.

关键词： ternary fullerene acceptors

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A　Proposed　Program　for　Technological　Development　of　Opencast　Mining　in　China

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China Coal 1996年第1期 27-31页

作者： zhang youdi Cai Qingxiang et al.

ＡＰｒｏｐｏｓｅｄＰｒｏｇｒａｍｆｏｒＴｅｃｈｎｏｌｏｇｉｃａｌＤｅｖｅｌｏｐｍｅｎｔｏｆＯｐｅｎｃａｓｔＭｉｎｉｎｇｉｎＣｈｉｎａ￥ＺｈａｎｇＹｏｕｄｉ；ＣａｉＱｉｎｇｘｉａｎｇｅｔａｌ．１．Ｔｅｃｈｎｏｌｏｇｉｃ... 详细信息

ＡＰｒｏｐｏｓｅｄＰｒｏｇｒａｍｆｏｒＴｅｃｈｎｏｌｏｇｉｃａｌＤｅｖｅｌｏｐｍｅｎｔｏｆＯｐｅｎｃａｓｔＭｉｎｉｎｇｉｎＣｈｉｎａ￥ＺｈａｎｇＹｏｕｄｉ；ＣａｉＱｉｎｇｘｉａｎｇｅｔａｌ．１．Ｔｅｃｈｎｏｌｏｇｉｃａｌｒｅｓｅａｒｃｈｏｎｏｐｅｎｃ...

关键词： Program

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Highly crystalline acceptor materials based on benzodithiophene with different amount of fluorine substitution on alkoxyphenyl conjugated side chains for organic photovoltaics

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Materials Reports(Energy) 2021年第4期1卷 45-53页

作者： youdi zhang Ruijie Ma Yong Wang Ying Wang Tao Liu Yiqun Xiao Yongjoon Cho Zhenghui Luo Xinhui Lu Lun Zhao Zhongyi Yuan Changduk Yang He Yan Yiwang Chen College of Chemistry Changchun Normal UniversityChangchun130032JilinChina College of Chemistry Nanchang UniversityNanchang330031China Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration&Reconstruction Hong Kong University of Science and Technology(HKUST)Hong KongChina Institute of Polymers and Energy Chemistry(IPEC) Nanchang UniversityNanchang330031China Department of Physics Chinese University of Hong KongHong KongChina Department of Energy Engineering School of Energy and Chemical EngineeringPerovtronics Research CenterLow Dimensional Carbon Materials CenterUlsan National Institute of Science and Technology(UNIST)Ulsan44919Republic of Korea

Organic solar cells based on narrow bandgap small-molecule acceptors(SMAs)with highly crystalline characteristics have attracted great attentions for their superiority in obtaining high photovoltaic *** highly crystalline SMAs to enhance power conversion efficiencies(PCEs)by regulating and controlling morphology and compatibility of donor and acceptor materials has turned out to be an effective *** this study,we synthesized three different crystalline SMAs by using fluorine substitution on alkoxyphenyl conjugated side chains to modulate the relationship of crystallinity and morphologies,namely ZY1(zero F atoms),ZY2(two F atoms),and ZY3(four F atoms).The three SMAs show the broad absorption edges and similar frontier orbital energy levels,generating the analogical(over 0.9 V)open circuit voltage(VOC)of the polymer solar cells(PSCs).As a result,the PM6:ZY2-based PSCs yield a PCE of 10.81%with a VOC of 0.95 V,a short-circuit current density(JSC)of 16.154 mA cm^(-2),and a fill factor(FF)of 0.71,which is higher than that of 9.17%(PM6:ZY1)and 6.37%(PM6:ZY3).And the PCE(17.23%)of the PM6:Y6:ZY2 based ternary PSCs is also higher than that of 16.32%PM6:Y6 based binary ***,the results demonstrate that adding fluorine atoms on the conjugated side chains to construct high crystalline materials is a positive strategy to effectively increase the efficiencies of binary and ternary PSCs.

关键词： Organic solar cells Small molecular acceptors Fluorine substitution Highly crystalline acceptors Nonfullerene polymer solar cells

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Editorial for the special issue“Printable solar cells:From materials to devices”

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Materials Reports(Energy) 2021年第4期1卷 1-2页

作者： Kuan Sun youdi zhang Shirong Lu Jiangzhao Chen Shanshan Chen Chongqing University China Changchun Normal University China Chongqing Green Intelligent Technology Research Institute Chinese Academy of SciencesChina

Printable solar cells(including perovskite solar cells and organic photovoltaic cells,etc.)are manufactured based on soluble/dispersible semiconductor materials via printing *** have unique advantages of light weight,flexibility,adjustable color/transparency and low *** recent years,great breakthroughs have been made in the field of printable solar cells,and their energy conversion efficiency exceeds 25%,which is comparable to that of monocrystalline silicon solar *** present,this novel photovoltaic technology is expected to overcome the commercialization *** this context,Materials Reports:Energy(MRE)specially planned a themed issue on printable solar cells.A number of high-quality papers are collected,aiming to introduce the latest progress in this field and provide a wide overview of theoretical and experimental progress and research results from materials to devices.

关键词： breakthrough overcome printing

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