| publication name | Photoacousticstudyofopticalandthermalproperties of alloyedCdTexS1x nanocrystals |
|---|---|
| Authors | s ZahrahEl-Qahtani , AliBadawi , K.Easawi , N.Al-Hosiny , S.Abdallah |
| 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
Photoacoustic (PA )technique has been applied to studythe optical and thermal properties of the alloyed CdTexS1x (nanocrystals (NCs)withdifferent(Te/(SþTe) )molarratio(x¼0, 0.2,0.4,0.6,0.8and1).Increasing x value causesc learlyobservedredshiftofthe correspondingexcitonpeakinPAspectra.Thesamespectrawerecomparedtothose obtainedbyaregularUV–Vis. absorption.Theeffectivemassapproximation(EMA)model wasappliedtodeterminethesizeoftheNCs.ThecalculatedsizesofthealloyedNCsarein a goodagreementwiththedirectlymeasuredvaluesobtainedusinghighresolution transmission electronmicroscopy(HRTEM).Thevaluesofthermaldiffusivityandthermal conductivityobtainedusingPAtechniqueshowatleastanorderofmagnitudelargerthan that ofthebulkvalues