| publication name | The photovoltaicperformanceofalloyedCdTexS1x quantum dotssensitizedsolarcells |
|---|---|
| Authors | N. Al-Hosiny S.Abdallah , AliBadawi , K.Easawi H.Talaat |
| year | 2014 |
| keywords | |
| journal | |
| volume | Not Available |
| issue | Not Available |
| pages | Not Available |
| publisher | Not Available |
| Local/International | International |
| Paper Link | www.elsevier.com/locate/mssp |
| Full paper | download |
| 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.