Surface and interface effects on non-radiative exciton recombination and relaxation dynamics in CdSe/Cd,Zn,S nanocrystals
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- 作者：Brenna R. Walsha ; Jonathan I. Saaria ; Michael M. Krausea ; Robert Nickb ; Seth Coe-Sullivanb ; Patanjali Kambhampatia ; pat.kambhampati@mcgill.ca" class="auth_mail" title="E-mail the corresponding author
- 关键词：Alloying ; Non-radiative pathways ; Surface trapping ; Auger recombination ; Auger relaxation
- 刊名：Chemical Physics
- 出版年：2016
- 出版时间：1 June 2016
- 年：2016
- 卷：471
- 期：Complete
- 页码：11-17
- 全文大小：1445 K
文摘
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We examine a CdSe/Cd,Zn,S core/shell system with a smoothed core/shell interface.
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We see homogeneity of emitters from single exponential lifetime.
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Biexciton recombination rate extended due to decrease in trap states at interface.
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Increased induction time for multiexciton recombination.
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Rate of electron cooling slowed due to increase in Auger relaxation rate.