Synthesis and Spectroscopy of II–VI Quantum Dots: An Overview
Small particles of II-VI semiconductors which are 10 to 100 Å in diameter exhibit quantum confinement effects at room temperature. They are the zero dimensional analog of quantum wells and are often referred to as quantum dots. This review tutorial discusses the application of simple effective mass theory to these small particles in section 2. Section 3 summarizes a synthetic procedure which produces crystallites of CdSe with sizes tunable between ∼15 and 115Å and with distributions <5%. Sections 4 and 5 discuss the spectroscopy of these crystallites, with section 4 focusing on the absorption event and section 5 focusing on the luminescence event. Since the intended audience of this review tutorial is the interested but uninitiated, the tone is kept simple. The number of references is also purposely kept manageable. The intent here is to convey some of the basic ideas of the field.
KeywordsEnvelope Function Phonon Coupling Review Tutorial Quantum Confine Stark Effect Semiconductor Cluster
Unable to display preview. Download preview PDF.
- 1.Al. L. Efros and A. L. Efros, Fiz. Tekh. Poluprovodn. 16, 1209 (1982) [Sov. Phys. Semicond. 16, 772 (1982)].Google Scholar
- 15.C. B. Murray, C. Kagan, and M. G. Bawendi, to be published.Google Scholar
- 24.M. Nirmal, C. B. Murray, and M. G. Bawendi, Phys. Rev. B (1994).Google Scholar
- 30.N. F. Mott and E. A. Davis, Electronic Processes in Non-Crystalline Materials (Clarendon, Oxford, 1971).Google Scholar