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Organic photodetectors with non-fullerene acceptors

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Journal of Semiconductors 2022年第11期43卷 1-4页

作者： Songxue Bai Lixiu Zhang qianqian lin Liming Ding Key Lab of Artificial Micro-and Nano-Structures(MoE) School of Physics and TechnologyWuhan UniversityWuhan 430072China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China Hubei Luojia Laboratory Wuhan 430072China Suzhou Institute of Wuhan University Suzhou 255123China

During last decade,organic photovoltaics experienced an exciting renaissance[1-5],mainly benefiting from the development of non-fullerene acceptors(NFAs),which boosted the power conversion efficiency to-20%[6,7].Along with the unprecedented success of organic solar cells,non-fullerene acceptors also find other optoelectronic *** particular,high-performance organic photodetectors(OPDs)[8,9]based on non-fullerene acceptors have been reported.

关键词： fullerene acceptors boost

Lead-free perovskite Cs_(2)AgBiBr_(6)/Cs_(3)Bi_(2)Br_(9)single-crystalline heterojunction X-ray detector with enhanced sensitivity and ultra-low detection limit

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Science China Materials 2025年第2期68卷 561-570页

作者： Hongjie Liu Xue Sun Jiaxin Liu Xiang Li Yunqiu Hua Zhongjie Yue Jian Song Xilong Wang Yujie Yang qianqian lin Zhongjun Zhai Xutang Tao Guodong Zhang State Key Laboratory of Crystal Materials Institute of Crystal MaterialsShandong UniversityJinan 250100China Key Lab of Artificial Micro-and Nano-Structures of Ministry of Education of China School of Physics and TechnologyWuhan UniversityWuhan 430072China

Lead-halide perovskite single crystal(SC)heterojunctions have attracted significant attention for X-raydetection owing to their unique combination of high sensitivity,resolution,stability and low detection ***,the toxicity of lead in those perovskite heterojunctions limitstheir practical ***,we report the constructionof the first all-inorganic lead-free Cs_(2)AgBiBr_(6)/Cs_(3)Bi_(2)Br_(9)SCheterojunctions with an area of 20×20 mm^(2)via a facile liquidphase epitaxial method through temperature-lowering *** epitaxial crystallization of the three-dimensional(3D)Cs_(2)AgBiBr_(6)SC film on a 2D Cs_(3)Bi_(2)Br_(9)SCsubstrate requires a large driving force for transitioning fromthe Volmer–Weber mode to the layer-by-layer growth modeunder a rapid cooling *** Cs_(2)AgBiBr_(6)/Cs_(3)Bi_(2)Br_(9)SCheterojunction detector achieves a high sensitivity of1390μC Gy_(air)^(−1)cm^(−2)for 100 keV hard X-ray detection atroom temperature,which is enhanced to 2075μC Gy_(air)^(−1)cm^(−2)at 75℃,demonstrating impressive high-temperature ***,the detector achieves a detection limit of37.48 nG_(yair)s^(−1)and excellent stability for 90 days without *** work demonstrates the feasibility of usingthe epitaxial mechanism of perovskite formation on a highsurface-energy substrate for the controllable construction of a3D/2D heterojunction that significantly enhances X-ray detection performance.

关键词： lead-free halide perovskite single-crystal heterojunctions epitaxial crystallization X-ray detection low detection limit

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Dendrochronology-based stand growth estimation of Larix olgensis forest in relation with climate on the eastern slope of Changbai Mountain, NE China

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Frontiers of Earth Science 2013年第4期7卷 429-438页

作者： Bo lin qianqian XU Wenhui LIU Guochun ZHANG Qiongyao XU Qijing LIU Key Laboratory of Forest Cultivation Department of Forest Sciences Beijing Forestry University Beijing 100083 China

The eastern slope of Changbai Mountain is characterized by pure larch forest （Larix olgensis） with little human disturbance. Response of tree growth to climate in this area remains unknown. Meanwhile, little is known about how climate variations affect the biomass increase which could be recognized as a three-dimensional tree growth index. The objective of this study is to investigate the climate effects on the radial and biomass growth of larch on eastem slope of Changbai Mountain. Tree-ring width chronologies and mean annual biomass increment were established using tree-ring data. We used correlation analysis and multiple regression analysis to explore the relationship between larch growth and climatic factors from 1957 to 2009. Results show that tree-ring growth and mean annual biomass increment were primarily and significantly affected by previous year climatic variables with slight difference among months. Temperatures were more consistently and strongly corre- lated to the chronologies and mean annual biomass increment than was precipitation. Temperature is the main factor limiting larch growth on Changbai Mountain and the ongoing climate warming may accelerate the growth of the species. The current stand biomass of the area was ***-1 and the annual stand biomass increment in 2009 was 2.91 ***-1. In conclusion, the old-growth forest in the study area is still accumulating carbon efficiently.

关键词： Larix olgensis tree ring climatic factors,biomass China

On the unipolarity of charge transport in methanofullerene diodes

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npj Flexible Electronics 2017年第1期1卷 100-105页

作者： Ardalan Armin Safa Shoaee qianqian lin Paul L Burn Paul Meredith Centre for Organic Photonics&Electronics The University of QueenslandSt Lucia CampusBrisbaneQLD 4072Australia Centre for Engineered Quantum Systems School of Mathematics and PhysicsThe University of QueenslandSt Lucia CampusBrisbaneQLD 4072Australia Institute of Physics and Astronomy University of PotsdamKarl-Liebknecht-Straße 24-25Potsdam-Golm D-14476Germany Clarendon Laboratory Department of PhysicsThe University of OxfordParks Road OxfordOxfordOX13PUUK Department of Physics Swansea UniversitySingleton ParkSwanseaWales SA28PPUK

Fullerenes are electron transporting organic semiconductors with a wide range of *** particular,methanofullerenes have been the preferred choice for solution-processed solar cells and *** wide applicability of fullerenes as both‘ntype’transport materials and electron acceptors is ***,what is still a matter of debate is whether the fullerenes can also support efficient transport of holes,particularly in diode *** this letter,we utilize a number of recently developed experimental methods for selective electron and hole mobility *** show for the two most widely used solution processable fullerenes,PC70-and-PC60BM,that whilst both exhibit electron mobilities as high as 10^(−3)cm^(2)/Vs,their hole mobilities are<10^(−9)cm^(2)/*** charge transport in these fullerenes can be considered predominantly unipolar in diode configurations.

关键词： charge utilize polarity

Flexible all-organic photodetectors via universal water-assisted transfer printing

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The Innovation 2023年第4期4卷 39-46页

作者： Yang Tang Ruiming Li Rui Sun Jie Min qianqian lin Chuluo Yang Guohua Xie Sauvage Center for Molecular Sciences Hubei Key Lab on Organic and Polymeric Optoelectronic MaterialsDepartment of ChemistryWuhan UniversityWuhan 430072China College of Materials Science and Engineering Shenzhen UniversityShenzhen 518060China The Institute of Flexible Electronics(Future Technologies) Xiamen UniversityXiamen 361005China Key Lab of Artificial Micro-and Nano-Structures of Ministry of Education of China School of Physics and TechnologyWuhan UniversityWuhan 430072China The Institute for Advanced Studies Wuhan UniversityWuhan 430072China

Transfer printing of small-molecular organic semiconductors often faces challenges due to surface adhesion ***,we developed a sacrificing-layer-assisted transfer printing technique for the deposition of smallmolecular thin ***-boiling-point ethylene glycol(EG)was doped in aqueous solution poly(3,4-ethylenedioxythiophene)polystyrene sulfonate(PEDOT:PSS)as the sacrificing layer to manipulate residual water in film,which allowed chlorobenzene solution to spontaneously spread and form uniform film.

关键词： film transfer allowed

Novel germline mutations in MLH1 and PMS2 in familial Lynch syndrome

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Gynecology and Obstetrics Clinical Medicine 2022年第2期2卷 100-103页

作者： Yuhan Cai Xiaohan Chang Congrong Liu qianqian lin Hua Li Department of Obstetrics and Gynecology Peking University Third HospitalChina Department of Pathology Peking University Third HospitalChina Department of Obstetrics and Gynecology Beijing Chao-Yang HospitalCapital Medical UniversityChina

Lynch syndrome(LS),an autosomal dominant inherited syndrome causing tumor predisposition,is often associated with colorectal cancer(CRC)and,second most commonly,endometrial cancer(EC).1–3 It is caused by a heterozygous(one allele affected)inactivating germline mutation in one of the mismatch repair(MMR)genes;germline deletion of the epithelial cell adhesion molecule(EPCAM)gene may also result in LS.4–6 Here,we report a Chinese family with LS,identifying two novel mutations in MMR(mismatch repair)genes that are related to LS development and may facilitate its diagnosis.

关键词： MLH1 cancer colorectal

Unraveling the influence of interface defects on antimony trisulfide solar cells

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Journal of Energy Chemistry 2023年第3期78卷 262-267,I0008页

作者： Hongyi Chen Cheng Wang Shaoying Wang Ruiming Li Yan Zeng Zhe Li Zhengwei Ou qianqian lin Jianmin Li Ti Wang Hongxing Xu School of Physics and Technology and Key Laboratory of Artiﬁcial Micro-and Nano-structures of Ministry of EducationWuhan UniversityWuhan 430072HubeiChina Wuhan Institute of Quantum Technology Wuhan 430206HubeiChina School of Microelectronics Wuhan UniversityWuhan 430072HubeiChina

Antimony trisulfide(Sb_(2)S_(3)) solar cells suffer from large open circuit voltage deficits due to their intrinsic defects which limit the power conversion ***,it is important to elucidate these defects’ origin and defects at the ***,we discover that sulfide radical defects have a significant impact on the performance of Sb_(2)S_(3)solar ***,it has been illustrated that these defects at the CdS/Sb_(2)S_(3)interface can be reduced by optimizing the deposition process.A trap distribution model is used to quantify the defect density at the CdS/Sb_(2)S_(3)*** shows that the interface defects can be reduced by24% by improving the deposition *** work reveals the importance of interface defects and guides the future optimization of Sb_(2)S_(3)solar cells.

关键词： Antimony trisulﬁde Interface defect Transient absorption spectroscopy

Organic molecules with dual triplet-harvesting channels enable efficient X-ray scintillation and imaging

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Aggregate

Aggregate 2024年第3期5卷 232-238页

作者： Lisi Zhan Yalun Xu Tianhao Chen Yang Tang Cheng Zhong qianqian lin Chuluo Yang Shaolong Gong Department of Chemistry Hubei Key Laboratory on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhanChina Key Lab of Artificial Micro-and Nano-Structures of Ministry of Education of China School of Physics and TechnologyWuhan UniversityWuhanChina Shenzhen Key Laboratory of New Display and Storage Materials College of Materials Science and EngineeringShenzhen UniversityShenzhenChina

Organic scintillators have recently gained considerable attentions in X-ray detection for their potential applications in biomedical radiograph and security ***,the weak X-ray absorption and/or inefficient exciton utilization have limited the development and commercialization of organic ***,high-performance X-ray organic scintillators are scarce and organic scintillators with dual triplet-harvesting channels have not been explored ***,we develop several proof-of-concept sulfone-based organic molecules,C1–C7,using different alkoxy chains to manipulate molecular packing *** materials exhibit dual triplet-harvesting channels of thermally activated delayedfluorescence(TADF)and room-temperature phosphorescence(RTP)in aggregated ***,these molecules display distinct radioluminescence under the X-ray *** them,C6 behaves the highest light yield of 16,558 photons ***,clear X-ray images are demonstrated in both aggregated state and single-molecule *** spatial resolutions of 15.0 and 10.6 line pairs per millimeter(lp mm-1)are achieved for rigid andflexible scintillator screens,exceeding most reported organic and conventional inorganic *** results highlight the great potential of organic molecules with TADF and RTP nature for efficient X-ray scintillation and imaging.

关键词： alkoxy chain engineering organic scintillators radioluminescence room-temperature phosphorescence thermally activated delayedfluorescence X-ray imaging

Surface repair of wide-bandgap perovskites for high-performance all-perovskite tandem solar cells

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Journal of Energy Chemistry 2024年第6期93卷 64-70,I0003页

作者： Xiaojing Lv Weisheng Li Jin Zhang Yujie Yang Xuefei Jia Yitong Ji qianqian lin Wenchao Huang Tongle Bu Zhiwei Ren Canglang Yao Fuzhi Huang Yi-Bing Cheng Jinhui Tong State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina Key Lab of Artificial Micro-and Nano-Structures of Ministry of Education of China School of Physics and TechnologyWuhan UniversityWuhan 430072HubeiChina Department of Electrical and Electronic Engineering Photonics Research Institute(PRI)Research Institute for Intelligent Wearable Systems(iWEAR)The Hong Kong Polytechnic University999077Hong KongChina Laboratory of Advanced Materials Fudan UniversityShanghai 200438China Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan 528200GuangdongChina

Wide-bandgap(WBG)perovskite solar cells(PSCs)play a fundamental role in perovskite-based tandem solar ***,the efficiency of WBG PSCs is limited by significant open-circuit voltage losses,which are primarily caused by surface *** this study,we present a novel method for modifying surfaces using the multifunctional S-ethylisothiourea hydrobromide(SEBr),which can passivate both Pb^(-1)and FA^(-1)terminated surfaces,Moreover,the SEBr upshifted the Fermi level at the perovskite interface,thereby promoting carrier *** proposed method was effective for both 1.67 and 1.77 eV WBG PSCs,achieving power conversion efficiencies(PCEs)of 22.47%and 19.90%,respectively,with V_(OC)values of 1.28 and 1.33 V,along with improved film and device *** this advancement,we were able to fabricate monolithic all-perovskite tandem solar cells with a champion PCE of 27.10%,This research offers valuable insights for passivating the surface trap states of WBG perovskite through rational multifunctional molecular engineering.

关键词： Wide-bandgap perovskite Surface defect Multifunctional molecule All-perovskite tandem solar cells