200 µm200 µmProfessorMoritookhiscurrentpositionin2018afterworkingatNokiaJapanandasanassistantprofessorandthenanassociateprofessorintheFacultyofTextileScienceatShinshuUniversity.Hisareasofresearchincludedye-sensitizedandorganicfilmsolarcellsandsemiconductorsurfaceelectrontransfer.Fig. 1. Scanning electron microscopy image of wrinkles with a stripe pattern.Fig. 2. Light microscope image of wrinkles with an interdigitated array pattern.A selection of pigment solution and dye-sensitized solar cells made from them. These solutions make it possible to design effective solar cells.It is possible to make solar cells without complex equipment.Studiessurfaceapplicationstopographiesareprogressingcontinuously.IamattemptingtoconstructForexample,regulararraysofcrystallineneedlesusingsurfacewrinklesonsiliconerubber.Consideringseveralinterestingdomains,Ibelievethatgraduatestudentswillfreely,choosetheirirrespectivedomain.ofofjobsresearchManyuniversitiesandcompaniesthroughouttheworldarepursuingresearchanddevelopmentprogramswiththegoalofincreasingtheefficiencyofsolarcellsthatcanbecreatedbycoatingsurfaceswithamixtureoftitaniumoxide(usedinsunblockcreams),iodine(usedasadisinfectant),andpigments(suchasfromblueberries).Iamworkingtodevelophighlyefficientsolarcellsandexplainthemechanismofelectrontransfer.Iamengagedindevelopingtechnologytocreateregularsurfacetopographyusingsimplemethods.Forexample,treatingthesurfaceofasiliconerubbersheetwithamixtureofconc.H2SO4andconc.HNO3createsregularwrinklesonit(Fig.1).Asanotherexample,thingoldfilmsspontaneouslywrinkletoformaninterdigitatedarraypatternusingsputteringmethodsofthinfilmformationonasiliconerubbersurface(Fig.2).TechnologyandandWatanabeisProfessorcurrentlyinterestedinsurfacepropertiesofpolymersandarrangementofsmallobjects,suchascrystallineneedles.Outlook for researchDye-sensitizedsolarcellsandorganic-filmsolarcellsareexpectedtoserveaslow-cost,next-generationsolarcell.Further,byexplainingthemechanismofelectrontransfer,Ibelieveitwillbepossibletodesignhigh-performancedevicesusinglow-costmaterials.Outlook for students after graduationGraduates are employed by material, device, and electrical manufacturers.Outlook for researchonOutlook for students after graduationtheavailabilitygraduateoftheirProfessorMORIShogoProfessorWATANABEMasashiDepartment ofChemistry and MaterialsDepartment ofChemistry and Materials31Mixing familiar materials to make coatingsfor high-efficiency solar cellsDevelopmentofsimplemethodsforcreatingregularsurfacetopography
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