SciTech Connect

Title: Pressure-induced Phase Transition in Thiol-capped CdTe Nanoparticles

Pressure-induced Phase Transition in Thiol-capped CdTe Nanoparticles Phase transitions for CdTe nanoparticles (NPs) under high pressure up to 37.0 GPa have been studied using fluorescence measurements. The phase transition from cinnarbar to rocksalt phase has been observed in CdTe NPs solution at 5.8 GPa, which is much higher than the phase transition pressure of bulk CdTe (3.8 GPa) and that of CdTe NPs in solid form (0.8 GPa). CdTe NPs solution therefore shows elevated phase transition pressure and enhanced stability against pressure compared with bulk CdTe and CdTe NPs in solid forms. The enhanced stability of CdTe NPs solution has been attributed to possible shape change in the phase transition and/or inhomogeneous strains in nanoparticle solutions.
Authors: ; ; ;
Publication Date:
OSTI Identifier:OSTI ID: 950636
Report Number(s):UCRL-JRNL-226495
TRN: US200910%%281
DOE Contract Number:W-7405-ENG-48
Resource Type:Journal Article
Resource Relation:Journal Name: Journal of Nanosciences and Nanotechnology, vol. 8, no. 12, December 1, 2008, pp. 6528-6532; Journal Volume: 8; Journal Issue: 12
Research Org:Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Sponsoring Org:USDOE
Country of Publication:United States
Language:English
Subject: 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; FLUORESCENCE; SHAPE; STABILITY; STRAINS