Temperature Dependence of Luminescence of CdS:Mn/ZnS Core-Shell Quantum Dots

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2014,（5）
• 页码范围: 169-173
• 页数: 5页
• 语种: 中文
• DOI: 10.1088/0256-307X/31/5/057801

摘要

Luminescence intensity of CdS:Mn/ZnS core-shell quantum dots (QDs) can be strongly enhanced in comparison with bulk CdS:Mn and nanoparticles,while the luminescence due to the surface state is greatly suppressed by a capping ZnS shell.We find that with the increasing temperature,the peak position of CdS:Mn/ZnS core-shell QDs blue shifts due to the reduction of phonon coupling.Unlike the bulk CdS:Mn,the luminescence of the core-shell QDs is less sensitive to thermal quenching.