期刊
PHYSICAL REVIEW LETTERS
卷 102, 期 19, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.197401
关键词
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资金
- Israel Science Foundation [1009/07, 1425/04]
- USA-Israel Binational Science Foundation [2006-225]
- Ministry of Science [3-896]
Single-exciton, biexciton, triexciton, and quadraexciton bands were resolved in the microphotoluminescence spectrum of a single CdTe/CdSe core-shell colloidal quantum dot, revealing nearly blinking-free behavior. Multiexcitons were generated by a sequential filling of electronic shells with the increase of a continuous-wave excitation power, and their probability was evaluated under steady-state conditions. A partial carriers' delocalization was determined at the core-shell interface, and an exciton binding energy was estimated by a second-order perturbation theory.
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