工学部_研究紹介_2020_英語版
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Research of Compound SemiconductorThin-film Solar Cells and EnvironmentallyFriendly MaterialsIamnowexploringanalternativematerialwithlowpollutionthatcanbeappliedtothethin-filmsolarcells.Andalsofocusingontheresearchofnewenergydeviceandfabricationprocess.Tocontributetotheglobalsocietybymeansofinnovatingrenewableenergydevices(RED)andenvironment-friendlymaterials(EFM).TopromotetheapplicationsofREDandEFMinvariousindustrialfieldsinordertoreducetheenvironmentalpollution.ToestablishgreenelectronicproductionprocessbasedonlowpollutiontechnologiesGraduatestudentswillgetchangestobecomeactivescientistsorengineersofthefuturebyexperiencingadvancedresearchesinthefieldofenvironmental-friendlyelectronicatourLab.ProfessorPhD (Engineering) Univ. of TokyoSpecial Research Fellow of the Japan Society for the Promotion of ScienceHead of the Research Center of Carbon ScienceResearch fields:・material research for photovoltaicapplications・applications of oxide thin film・semiconductor hetero junction・applications of carbon materialsFundamentalstructureofathin-filmsolarcell.Thetotalthicknessofthecellisjustafewmicrometer.Right photo: Wearedevelopingasolarcellbyutilizingenvironmentallyharmonicmaterialsandprocesses.Bottom electrodeTransparent conductive layerAbsorberBuffer layerTop electrodeSubstrateMicroscopic image of thin-film solar cell developed by our lab members. Yoshio HashimotoIn the FutureAfter GraduationElectrical& Computer EngineeringRadiowavesarenotvisible,butveryusefulforcellphonesandwirelesscommunications.Ourresearchsubjectintroducedhereis“visiblelightcommunications”.TheinformationcanbecarriedbythevisiblelightemittedfromanLEDbyturningiton/offbasedontheinformationdata.Becauseyouseethelight,youknowwheretheinformationisfrom,andifyouhavetroublereceivingtheinformation,youknowwherethesourceofthetroubleis.Andtheinformationdoesnotreachinthedirectionwhereyoublockthelight(confidentiality).Inaddition,youcancommunicatewitheachotherunderwater,throughtheglass,andeveninplacesprohibitedtouseradiowavessuchashospitals,aslongasthelightreaches..Energy-savingLEDlampsareinstalledeverywhere.SoifsuchLEDlampsareequippedwiththevisiblelightcommunicationfunction,theycansendoutthesignalsofterrestrialdigitalbroadcastingandpositioningsignalslikeGPSinsteadofradiosignals.Andyouwillbeabletogetthedetailedmapofthesurroundingareaunderthestreetlamps.Visiblelightcommunicationisarelativelynewtechnology,soitsfuturedependsontheideasofyoungpeople.Professorsince 2005,after KobeUniversity andNagano National College of Technology. His current research interest is the development of visible light communications.Experiment of visible light communications: Since we need neither wireless-workers license nor radio station license , communication experiment can be done freely in the laboratory.Visible Light Communications(Information transmission by LED light)Experiment of visible light communication over long distance: The world record is 42.19km that is attained by co-working company. We am challenging to satellite communications.Thestudentsgraduatedfromourlabare“workinghardandplayinghard”,whichisourmotto.Theyareactiveintheareasofelectronicsandcommunications,workingatradioequipmentmanufacturersandmobileservice,railroad,electricpowercompanies.ShiroHandaIn the FutureAfter GraduationElectrical& Computer Engineering33

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