Please use this identifier to cite or link to this item:
|Title:||High pressure photoluminescence and Raman studies of ZnxCd 1-xSe quantum dots|
|Source:||Ni, Z.H., Fan, H.M., Kasim, J., You, Y.M., Feng, Y.P., Han, M.Y., Shen, Z.X. (2008-08-13). High pressure photoluminescence and Raman studies of ZnxCd 1-xSe quantum dots. Journal of Physics Condensed Matter 20 (32) : -. ScholarBank@NUS Repository. https://doi.org/32/325214|
|Abstract:||Raman and photoluminescence (PL) studies of wurtzite alloy Zn xCd1-xSe (x = 0.2) quantum dots (QDs) with size ∼4.7 nm were carried out under hydrostatic pressure up to 130 kbar using the diamond anvil cell technique. The structural phase transition from wurtzite to rock-salt was observed at 71 kbar, indicated by the disappearance of both PL and Raman peaks. In addition, the abrupt change of PL pressure coefficient and Raman peak splitting were observed at about 25.8 kbar, which may indicate a new unidentified structural phase transition of the alloy QDs. This new unidentified phase transition was discussed and possible explanations were proposed. The results of alloyed ZnCdSe QDs differ greatly from that of bare CdSe or ZnSe QDs as well as the corresponding bulk materials, implying that the quantum size effect plays an important role in the structural stability of the alloy QDs. © IOP Publishing Ltd.|
|Source Title:||Journal of Physics Condensed Matter|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
WEB OF SCIENCETM
checked on Feb 14, 2018
checked on Feb 11, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.