Said Abdallah Abdelhalim Gohnim|Publications:The photovoltaicperformanceofalloyedCdTexS1x quantum dotssensitizedsolarcells

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Prof. Said Abdallah Abdelhalim Gohnim :: Publications:

Title:	The photovoltaicperformanceofalloyedCdTexS1x quantum dotssensitizedsolarcells
Authors:	N. Al-Hosiny S.Abdallah , AliBadawi , K.Easawi H.Talaat
Year:	2014
Keywords:	Not Available
Journal:	Not Available
Volume:	Not Available
Issue:	Not Available
Pages:	Not Available
Publisher:	Not Available
Local/International:	International
Paper Link:	http://www.elsevier.com/locate/mssp
Full paper	Said Abdallah Abdelhalim Gohnim_1.pdf
Supplementary materials	Not Available

Abstract:

The photovoltaicperformanceofalloyedCdTexS1x quantumdots(QDs)sensitizedsolar cells(QDSSCs)asafunctionoftuningthebandgapofalloyedCdTexS1x QDs isstudied. The tuningofbandgapwascarriedoutthroughcontrollingthemolarratio(x) ofQDs. PresynthesizedalloyedCdTexS1x QDs ofdifferent x values(0,0.2,0.4,0.6,0.8,and1) were depositedbydirectadsorption(DA)techniqueontoalayerofTiO2 nanoparticles (NPs)toserveassensitizersforthesolarcells.Thecharacteristicparametersofthe assembledQDSSCsweremeasuredunderAM1.5sunillumination,andshowthat CdTexS1x QDs hasbetterphotovoltaicperformancethanpureCdTeQDsorCdSQDs. The maximumvaluesof Jsc (1.54mA/cm2) and η (0.31%)wereobtainedfor x¼0.6. However,Theopencircuitvoltages(Voc) approximatelyconstant(0.4670.02V)forall alloyedCdTexS1x QDSSCs. Itisonlydictatedbytheconductionband(CB)levelofTiO2 nanoparticles(NPs)andthevalanceband(VB)oftheelectrolyte.

Prof. Said Abdallah Abdelhalim Gohnim :: Publications: