简介:Wereviewrecentadvancesinthefieldofquantumdotlasersonsilicon.Asummaryofdeviceperformance,reliability,andcomparisonwithsimilarquantumwelllasersgrownonsiliconwillbepresented.Weconsiderthepossibilityofscalable,lowsize,weight,andpowernanolasersgrownonsiliconenabledbyquantumdotactiveregionsforfutureshort-reachsiliconphotonicsinterconnects.
简介:CdSequantumdotsensitizedsolarcells(QDSCs)modifiedwithgraphenequantumdots(GQDs)havebeensuccessfullyachievedinthisworkforthefirsttime.Satisfactorily,theoptimizedphotovoltage(Voc)ofthemodifiedQDSCswasapproximately0.04VhigherthanthatofplainCdSeQDSCs,consequentlyimprovingthephotovoltaicperformanceoftheresultingQDSCs.ServedasanovelcoatingontheCdSeQDsensitizedphotoanode,GQDsplayedavitalroleinimprovingVocduetothesuppressedchargerecombinationwhichhasbeenconfirmedbyelectronimpedancespectroscopyaswellastransientphotovoltagedecaymeasurements.Moreover,differentadsorptionsequences,concentrationanddepositiontimeofGQDshavealsobeensystematicallyinvestigatedtoboostthepowerconversionefficiency(PCE)ofCdSeQDSCs.AfterthecoatingofCdSewithGQDs,theresultingchampionCdSeQDSCsexhibitedanimprovedPCEof6.59%underAM1.5Gfullonesunillumination.