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Efficient wide-bandgap perovskite solar cells with open-circuit voltage deficit below 0.4 V via hole-selective interface engineering

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Science China Chemistry 2024年第6期67卷 2102-2110页

作者： Xiaoyu Ji Shuo Zhang Furong Yu Huidong Zhang Liqing Zhan Yue Hu wei-hong zhu Yongzhen Wu Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Shanghai Key Laboratory of Functional Materials ChemistryFrontiers Science Center for Materiobiology and Dynamic ChemistryInstitute of Fine ChemicalsSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237China School of Chemistry University of EdinburghKing’s BuildingsEdinburghEH93FJUK

Wide-bandgap mixed-halide perovskite solar cells(WBG-PSCs)are promising top cells for efficient tandem photovoltaics to achieve high power conversion efficiency(PCE)at low ***,the open-circuit voltage(V_(OC))of WBG-PSCs is still unsatisfactory as the V_(OC)-deficit is generally larger than 0.45 ***,we report a buried interface engineering strategy that substantially improves the V_(OC)of WBG-PSCs by inserting amphiphilic molecular hole-selective materials featuring with a cyanovinyl phosphonic acid(CPA)anchoring group between the perovskite and *** assembly and redistribution of CPA-based amphiphilic molecules at the perovskite-substrate buried interface not only promotes the growth of a low-defect crystalline perovskite thin film,but also suppresses the photo-induced halide phase *** energy level alignment between wide-bandgap perovskite and the hole-selective layer is further improved by modulating the substituents on the triphenylamine donor moiety(methoxyls for MPA-CPA,methyls for Me PA-CPA,and bare TPA-CPA).Using a 1.68 e V bandgap perovskite,the Me PA-CPA-based devices achieved an unprecedentedly high V_(OC)of 1.29 V and PCE of 22.3%under standard AM 1.5 *** V_(OC)-deficit(<0.40 V)is the lowest value reported for *** work not only provides an effective approach to decreasing the V_(OC)-deficit of WBG-PSCs,but also confirms the importance of energy level alignment at the charge-selective layers in PSCs.

关键词： cyanovinyl phosphonic acid energy level alignment hole-selective material open-circuit voltage wide-bandgap perovskite

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Organic functional dyes

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Green Chemical Engineering 2023年第4期4卷 377-378页

作者： Zhi-Qian Guo wei-hong zhu Jiangli Fan Jong Seung Kim Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237China State Key Laboratory of Fine Chemicals Frontiers Science Center for Smart Materials Oriented Chemical EngineeringDalian University of TechnologyDalian116024China Research Institute of Dalian University of Technology in Shenzhen Shenzhen518057China Department of Chemistry Korea UniversitySeoul02841South Korea

Functional dyes go beyond traditional color applications and offer distinctive properties and functionalities,making them suitable for a wide range of industrial applications such as healthcare,agriculture,textiles,and *** dyes can serve as fluorescent probes in medical research,photosensitizers in cancer therapy,pesticide markers in agriculture,antimicrobial agents on textiles,and charge transport materials in *** ongoing research into new functional dyes reflects the interest of industries in identifying novel applications for these materials.

关键词： materials. functional dyes

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D-A-π-A organic dyes with fluorenyl-substituted bulky donor for efficient dye-sensitized solar cells

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Green Chemical Engineering 2023年第4期4卷 393-398页

作者： weiwei Zhang Huiyun Jiang Miaojie Yu Jie Wang Dong Shi wei-hong zhu Yongzhen Wu Key Laboratory for Advanced Materials and Institute of Fine Chemicals Joint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CenterFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237China School of Optoelectronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu610054China

Improving light-harvesting efficiency and suppressing interfacial charge recombination are of paramount importance to the development of Cu(Ⅱ/Ⅰ)redox shuttle-based dye-sensitized solar cells(DSSCs).Here,we present a rational molecular engineering on D-A-π-A organic sensitizers featuring with fluorenyl-substituted bulky donor(HY57,HY60,and HY61)for Cu(Ⅱ/Ⅰ)mediated *** gradually enhancing conjugation and rigidity of theπ-spacer and auxiliary acceptor moieties,the light-harvesting and electron-injection efficiencies can be simultaneously *** large size of fluorenyl-substituted arylamine donor together with abundant alkyl chains decorated on the molecular structures assist dense assembly of dye monolayer at surface of nanocrystalline TiO2,which largely suppress interfacial charge recombination *** applied in Cu(Ⅱ/Ⅰ)mediated DSSCs,the combination of an auxiliary acceptor of phenanthrene-fused-quinoxaline(PFQ)and aπ-spacer of cyclopentadithiophene(CPDT)in dye HY61 results in a simultaneous enhancement in short-circuit current(JSC)and open-circuit voltage(VOC),thus improving the power conversion efficiency(PCE)from 7.3%for reference dye HY59 to 10.3%for *** study demonstrates that rigid and fused building block is promising towards constructing highly efficient organic sensitizers.

关键词： Dye-sensitized solar cells Fluorenyl-substituted bulky donor Phenanthrene-fused-quinoxaline Electron injection Power conversion efficiency

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Highly efficient singlet oxygen generation of AIE luminogens enable mitochondria-targeted photodynamic therapy

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Green Chemical Engineering 2023年第4期4卷 448-453页

作者： Feng Gao Cheng-Yun Wang Yun Chen Fang-Zhou Xu Jian-wei Zou Zhi-Qian Guo wei-hong zhu Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry and Molecular Engineering East China University of Science and Technology Ningbo Tech University

The development of aggregation-induced emission luminogens(AIEgens) with high brightness and efficient photodynamic therapy(PDT) is of great value for the precise diagnosis and treatment of cancers. In this contribution, two novel AIEgens, TBBCyP and TBTCyP with D-A-π-A structure, were designed and prepared based on molecular rational design of electron-donating receptors. Experimental and theoretical results indicated that both TBBCyP and TBTCyP own bright AIE feature, satisfy photos ability, and generate efficient singlet oxygen(1O2).Notably, TBBCyP exhibited brighter emission and higher1O2yield in compared with TBTCyP, which could be ascribed to its weaker twisted intramolecular charge transfer(TICT) effect and narrower singlet-triplet energy gap(ΔEST). Moreover, it was proved that TBBCyP and TBTCyP showed a great mitochondrial specificity and desired intracellular ROS productivity for realizing the effective mitochondria-targeted PDT of cancer cells.

关键词： Photodynamic therapy Photosensitizer Aggregation-induced emission Mitochondrial imaging

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Type I photosensitizer based on AIE chromophore tricyano-methylene-pyridine for photodynamic therapy

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Green Chemical Engineering 2023年第3期4卷 324-330页

作者： Chao Pan weijun Zhao Xiaolei Zhao Zhenxing Liu Xiangyu Li Yanting Lyu Xupeng Wu Zhirong zhu wei-hong zhu Qi Wang Shanghai Key Laboratory of Functional Materials Chemistry Key Laboratory for Advanced Materials and Institute of Fine ChemicalsJoint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CenterFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237China

Image guided photodynamic therapy(PDT)combines fluorescence tracing and phototherapy,which can achieve a more accurate and effective treatment ***,traditional photosensitizers are limited by the aggregation-caused fluorescence quenching(ACQ)effect and low reactive oxygen species(ROS)generation in a hypoxic environment,resulting in poor imaging and treatment ***,we report a tricyano-methylene-pyridine(TCM)-based Type I aggregation-induced emission(AIE)photosensitizer(TCM-MBP),the strong elec-tron acceptance(D-A)effect extends the wavelength to near-infrared(NIR)region to reduce the autofluorescence interference,and oxygen atoms provide lone pair electrons to enhance the inter system crossing(ISC)rate,thereby promoting the generation of more triplet states to produce *** AIE photosensitizer TCM-MBP exhibited low oxygen dependence,NIR emission,and higher ROS production compared to commercially avail-able Ce_(6) and *** encapsulation with DSPE-PEG 2000,TCM-MBP nanoparticles(TCM-MBP NPs)could penetrate to visualize cells and efficiently kill cancer cells upon light *** study provides an oxygen-independent AIE photosensitizer,which has great potential to replace the commercial ACQ photosensitizers.

关键词： Aggregation-induced emission Near-infrared emission Photodynamic therapy Type I ROS

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Autogenous iliotibial band enhancement combined with tendon lengthening plasty to treat patella baja:A case report

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World Journal of Clinical Cases 2022年第4期10卷 1255-1262页

作者： De-Zhou Tang Qian Liu Jian-Kang Pan Yue-Ming Chen wei-hong zhu Department of Orthopaedics The Second Xiangya HospitalCentral South UniversityChangsha 410000Hunan ProvinceChina

BACKGROUND Patella baja is a severe complication after knee injury or surgery,resulting in pain and impaired *** disorder is also a substantial challenge for orthopaedic ***,no consensus exists regarding the gold standard management of patella *** not appropriately treated,significant dysfunction of the knee joint will *** SUMMARY A 46-year-old man with a left patellar fracture was treated with tension band fixation at a local *** had undergone a second operation at the same hospital because of limited knee flexion 6 mo after ***,the patellar tendon was *** patellar tendon was subsequently repaired using an ipsilateral semitendinosus *** years later,the patient presented to our department with knee pain and loss of range of *** iliotibial band(ITB)enhancement combined with sagittal tendon lengthening plasty was used to improve the symptoms of the knee *** patient was followed up for 2 *** knee joint function of the patient returned to the normal *** We successfully treated patella baja using autogenous ITB enhancement combined with sagittal tendon lengthening plasty.

关键词： Patella baja Tendon lengthening Iliotibial band Patellar fracture Case report

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A new strategy enabling intramolecular motion to obtain advanced photothermal materials

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Science China Chemistry 2019年第6期62卷 659-661页

作者： wei-hong zhu Shanghai Key Laboratory of Functional Materials Chemistry Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry and Molecular Engineering East China University of Science and Technology

Recently, considerable research interest has been focused on biomedical application of the photothermal materials, such as photoacoustic imaging (PAI) and photothermal therapy (PTT). PAI technique that roots in near-infrared (NIR) light excitation and ultrasonic detection has been extensively investigated in recent years since it surpasses the imaging depth limit of traditional optical imaging techniques, thereby providing deeper tissue penetration and higher spatial solution [1]. So far, several kinds of NIR-absorbing photothermal materials including gold nanorods/nanoshells, carbon nanotubes, 2D materials, semiconducting polymers and small-molecule organic dyes have been well studied for PAI and PTT.

关键词： Recently PAI PTT

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Neglected acidity pitfall: boric acid-anchoring hole-selective contact for perovskite solar cells

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National Science Review 2023年第5期10卷 221-231页

作者： Huanxin Guo Cong Liu honglong Hu Shuo Zhang Xiaoyu Ji Xiao-Ming Cao Zhijun Ning wei-hong zhu He Tian Yongzhen Wu Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterInstitute of Fine ChemicalsFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and Technology School of Physical Science and Technology Shanghai Tech University

The spontaneous formation of self-assembly monolayer(SAM) on various substrates represents an effective strategy for interfacial engineering of optoele ctronic ***-selective SAM is becoming popular among high-performance inverted perovskite solar cells(PSCs),but the presence of strong acidic anchors(such as-PO3H2) in state-of-the-art SAM is detrimental to device ***,we report for the first time that acidity-weakened boric acid can function as an alternative anchor to construct efficient SAM-based hole-sele ctive contact(HSC) for *** calculations reve al that boric acid spontaneously chemisorbs onto indium tin oxide(ITO) surface with oxygen vacancies facilitating the adsorption *** and electrical measurements indicate that boric acid anchor significantly mitigates ITO *** excess boric acid containing molecules improves perovskite deposition and results in a coherent and well-passivated bottom interface,which boosts the fill factor(FF) performance for a variety of perovskite *** optimal boric acid-anchoring HSC(MTPA-BA) can achieve power conversion efficiency close to 23% with a high FF of 85.2%.More importantly,the devices show improved stability:90% of their initial efficiency is retained after 2400 h of storage(ISOS-D-1) or 400 h of operation(ISOS-L-1),which are 5-fold higher than those of phosphonic acid SAM-based ***-weakened boric acid SAMs,which are friendly to ITO,exhibits well the great potential to improve the stability of the interface as well as the device.

关键词： perovskite solar cells hole-selective contact boric acid anchor acid-induced degradation long-term stability

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Infrared microspectroscopy beamline BL06B at SSRF

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Nuclear Science and Techniques 2024年第1期35卷 10-17页

作者： Te Ji Hua-Chun zhu wei-wei Peng Jie Wang hong-wei Zhao Ai-Guo Li Min Chen Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China

The infrared microspectroscopy beamline(BL06B) is a phase Ⅱ beamline project at the Shanghai Synchrotron Radiation Facility(SSRF). The construction and optical alignment of BL06B were completed by the end of 2020. By 2021, it became accessible to users. The synchrotron radiation infrared(SRIR) source included edge radiation(ER) and bending magnet radiation(BMR). The extracted angles in the horizontal and vertical directions were 40 and 20 mrad, respectively. The photon flux, spectral resolution, and focused spot size were measured at the BL06B endstation, and the experimental results were consistent with theoretical calculations. SRIR light has a small divergence angle, high brightness, and a wide wavelength range. As a source of IR microscopy, it can easily focus on a diffraction-limited spatial resolution with a high signal-to-noise ratio(SNR). The BL06B endstation can be applied in a wide range of research fields, including materials, chemistry, biology, geophysics, and pharmacology.

关键词： Synchrotron radiation Infrared beamline Infrared microspectroscopy

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Quality assessment of friction-stir-welded aluminum alloy welds via three-dimensional force signals

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Advances in Manufacturing 2024年第1期12卷 61-75页

作者： Ji-hong Dong Yi-Ming Huang Jia-Lei zhu wei Guan Xu-Kai Ren Huan-wei Yu Lei Cui Beijing Institute of Petrochemical Technology Beijing102617People’s Republic of China Beijing Academy of Safety Engineering and Technology Beijing102617People’s Republic of China AVIC Manufacturing Technology Institute Beijing100024People’s Republic of China Tianjin Key Laboratory of Advanced Joining Technology School of Materials Science and EngineeringTianjin UniversityTianjin300350People’s Republic of China Shaoxing Special Equipment Testing Institute Shaoxing Key Laboratory of Special Equipment Intelligent Testing and EvaluationShaoxing312071ZhejiangPeople’s Republic of China

An online detection technology must be developed for realizing the real-time control of friction stir *** this study,the three-dimensional force exerted on a material during friction stir welding was collected synchronously and the relationship between the forces and welding quality was *** results indicated that the fluctuation period of the traverse force was equal to that of the lateral force during the stable welding *** phase difference between two horizontal forces wasπ/*** values of the horizontal forces increased with welding speed,whereas their amplitudes remained the *** proposed force model showed that the traverse and lateral forces conformed to an elliptical curve,and this result was consistent with the behavior of the measured *** variational mode decomposition was used to process the plunge *** intrinsic mode function that represented the real fluctuation in the plunge force varied at the same frequency as the spindle rotational *** tunnel defects occurred,the fluctuation period features were consistent with those obtained during normal welding,whereas the ratio parameter defined in this study increased significantly.

关键词： Friction stir welding(FSW) Three-dimensional force model Variational mode decomposition Tunnel defect

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