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Improving the operational stability of perovskite solar cells with cesium-doped graphene oxide interlayer

Journal of Energy Chemistry 2024年第9期96卷 483-490页

作者： Masaud Almalki Katerina Anagnostou Konstantinos Rogdakis Felix t.Eickemeyer Mostafa Othman Minas M.Stylianakis Dimitris tsikritzis Anwar Q.Alanazi nikolaos.t.oganakis.lukas.pfeifer Rita therisod Xiaoliang Mo Christian M.Wolff Aïcha Hessler-Wyser Shaik M.Zakeeruddin Hong Zhang Emmanuel Kymakis Michael Grätzel Laboratory of Photonics and Interfaces École Polytechnique Fédérale de Lausanne(EPFL)Lausanne 1015Switzerland Department of Electrical and Computer Engineering Hellenic Mediterranean UniversityHeraklionCrete 71410Greece Institute of Electrical and Microengineering(IEM)Photovoltaics and thin-Film Electronics Laboratory(PV-Lab) École Polytechnique Fédérale de Lausanne(EPFL)Neuchâtel 2000Switzerland Department of Nursing Faculty of Health SciencesHellenic Mediterranean UniversityCrete 71410Greece Centre Interdisciplinaire de Microscopie Electronique École Polytechnique Fédérale de Lausanne(EPFL)Lausanne 1015Switzerland Future Energy technology Institute King Abdulaziz City for Science and Technology(KACST)P.O.Box 6086Riyadh 11442Saudi Arabia State Key Laboratory of Photovoltaic Science and technology Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and PerceptionInstitute of OptoelectronicsDepartment of Materials ScienceFudan UniversityShanghai 200433China

Perovskite solar cells(PSCs)have made great advances in terms of power conversion efficiency(PCE),yet their subpar stability continues to hinder their *** interface between the perovskite layer and the charge-carrier transporting layers plays a crucial role in undermining the stability of *** this work,we propose a strategy to stabilize high-performance PSCs with PCE over 23%by introducing a cesium-doped graphene oxide(GO-Cs)as an interlayer between the perovskite and hole-transporting *** GO-Cs treated PSCs exhibit excellent operational stability with a projected t80(the time where the device PCE reduces to 80%of its initial value)of 2143 h of operation at the maximum powering point under one sun illumination.

关键词： Perovskite solar cells Doped graphene oxide Graphene related material Long-term operational stability

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Mechanistic Insight into Supramolecular Polymerization in Water tunable by Molecular Geometry

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CCS Chemistry 2022年第7期4卷 2212-2220页

作者： Fan Xu Stefano Crespi lukas pfeifer Marc C.A.Stuart Ben L.Feringa Stratingh Institute for Chemistry University of GroningenGroningen 9747 AG Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterFrontiers Science Center for Materiobiology and Dynamic ChemistryInstitute of Fine ChemicalsSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237 Angstrom Laboratory Department of ChemistryUppsala UniversityUppsala 75120 Laboratory of Photonics and Interfaces Department of Chemistry and Chemical EngineeringÉcole Polytechnique Fédérale de LausanneLausanne CH-1015

Supramolecular self-assembly in water based on non-covalent bonding is attracting major attention due to the potential of hydrogels and aqueous polymers in biomedical *** supramolecular polymerization in organic solvents is well established,the key design features,the assembly mechanisms in water and achieving control over the aggregate structures remain ***,we present the assembly and disassembly of geometrical isomers of a stiff-stilbene bis-urea amphiphile(SA)in pure water.A remarkable feature of this system is that the(E)-isomer forms supramolecular polymers in both pure water and organic *** advantage of this unique property,the hydrophobic effect was studied by comparing the supramolecular assembly in both *** assembly process inwater follows an enthalpy-driven nucleation-elongation(cooperative)supramolecular polymerization mechanism with a standard Gibbs free energy(ΔG°=−53 kJ mol^(−1))double the value of the one found in *** attributed this distinctive feature to the hydrophobic effect in ***,we discovered an isomer-dependent assembly process,which can be used to control aggregation in aqueous *** to the substantial geometric difference between(E)-SA and(Z)-SA,we compared their assembly in water to study the influence of different driving forces involved in the *** supramolecular polymerization of(E)-SA was cooperatively influenced by hydrogen bonding,π-stacking,and hydrophobic effects,whereas the assembly of(Z)-SAwasmainly driven by hydrophobic *** a result,the fiber length of(E)-SA in water is much longer than that of(Z)-SA,presenting opportunities for geometrical control of aggregation in aqueousmedia.

关键词： supramolecular polymerization stiff-stil-bene bis-urea hydrogen bonding π-stacking hydro-phobic effects

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Retrograde inspection vs standard forward view for the detection of colorectal adenomas during colonoscopy: A back-to-back randomized clinical trial

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World Journal of Gastroenterology 2020年第16期26卷 1962-1970页

作者： timo Rath lukas pfeifer Clemens Neufert Andreas Kremer Moritz Leppkes Arthur Hoffman Markus F Neurath Steffen Zopf Department of Internal Medicine 1 Division of GastroenterologyLudwig Demling Endoscopy Center of ExcellenceFriedrich-Alexander-UniversityErlangen NuernbergErlangen 91054Germany Department of Internal Medicine Division of GastroenterologyKlinikum AschaffenburgAschaffenburg 63739Germany Department of Internal Medicine Division of GastroenterologyKlinikum FürthFürth 90766Germany

BACKGROUND the adenoma detection rate(ADR)is inversely associated with the incidence of interval colorectal cancer and serves as a benchmark quality criterion during screening ***,adenoma miss rates reach up to 26%and studies have shown that a second inspection of the right colon in retroflected view(RFV)can increase *** to assess whether inspection of the whole colon in RFV compared to standard forward view(SFV)can increase *** Patients presenting for screening or surveillance colonoscopy were invited to participate in this randomized controlled trial and randomized into two *** RFV arm colonoscopy was initially performed with SFV,followed by a second inspection of the whole colon in *** the SFV arm first withdrawal was performed with SFV,followed by a second inspection of the whole colon again with ***,size and morphology of polyps found during first and second inspection in each colonic segment were recorded and all polyps were removed and sent for histopathology in separate *** two hundred and five patients were randomly assigned to the RFV(n=101)and SFV(n=104)*** the RFV arm,both polyp detection rate(PDR)and ADR were increased under second inspection in RFV(PDR 1st SFV:39.8%,PDR 2nd RFV:46.6%;ADR 1st SFV:35.2%,ADR 2nd RFV:42%).Likewise,in the SFV arm,PDR and ADR were increased under second inspection(PDR 1st SFV:37.5%,PDR 2nd SFV:46.6%;ADR 1st SFV:34.1%,ADR 2nd SFV:44.3%)with no significant differences in ADR and PDR between the SFV and RFV *** number of adenomas per patient(APP)was increased in the RFV and SFV(APP RFV arm:1st SFV:1.71;2nd RFV:2.38;APP SFV arm:1st SFV:1.83,2nd SFV:2.2).the majority of adenomas additionally found during second inspection in RFV or in SFV were located in the transverse and left-sided colon and were>5 mm in *** Second inspection of the whole colon leads to increased adenoma detection with no differences between SFV and ***,increased detection is mos

关键词： Colorectal cancer Adenoma Adenoma detection rate Colonoscopy

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宝马世界

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城市环境设计 2020年第4期126卷 134-149页

作者：沃尔夫·狄·普瑞克斯 Paul Kath tom Wiscombe Waltraut Hoheneder Mona Marbach Hans Aescht Beatrix Basting Guy Bebiè Chris Beccone Johannes Behrens Marcelo Bernardi Pawel Bodzak Verena Boyer Antja Bulthaup Claudia Buhmann timo Carl Jan Chaldil Ing tse Chen tadeusz Chimiak Andrea Christmann Patrick Erhardt Stephan Exsternbrink Wolfgang Fiel Benedikt Frass Helmut Fr?tscher Volker Gessendorfer Andrea Graser lukas Haller Markus Henning Armin Hess Jens Hoff tamas Horvath Robert Huebser Astrid Jagersberger Marin Jurycz Gregor Kassl Areta Keller Markus Klausecker tobias Klein Martin Konrad Quirin Krumbholz Caroline Kufferath Marion Lattenmayer Stefan Laub Wolfgang Leitgeb Andreas Mieling Karin Miesenberger Dennis Milam Elke Müller Henrike Münker Claudia Nehammer Martin Oberascher Alexander Ott Stefan Pfefferle Florian pfeifer Markus Pillhofer Ekkehard Rehfeld Goswin Rothenthal Wolfgang Ruthensteiner Jasmin Sauerbier Florian Schafschetzy Kristina Schinegger Karolin Schmidbaur Patrick Schneider Katharina Schneider Hubert Schoba Angus Schoenberger Andrea Sch?ning Anja Sorger Gernot Stangl Mark Steinmetz Sigrid Steinwender Martina tippelskirch Dionicio Valdez Pascal Vauclair Akvile Rimantaite Andreas Weissenbach Heribert Wolfmayer Irina Zahler 2007 Ari Marcopoulos Gerald Zugmann Hélène Binet Duccio Malagamba Marcus Buck Christian Richters Richard Walch

项目大事记/CHRONOLOGY竞赛（一等奖）/Competition（1st Prize）:2001规划设计起始时间/Start of Planning:11/2001施工起始时间/Start of Construction:08/2003投入使用/Opening:20/10/2007-21/10/2007项目参数/PROJECt DAtA用地面积/Site Area:约25 000m2/Approx. 25 000m2建筑毛面积/Gross Floor Area:约73 000m2（除坡道）=100%/Approx.73 000m2（excluding ramps）=100%地上建筑毛面积/Gross Floor Area above ground:约28 500m2=40%/Approx.28 500m2=40%地下建筑毛面积/Gross Floor Area underground:约44 500m2=60%/Approx.44 500m2=60%

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