A new route to zinc-blende CdSe nanocrystals: Mechanism and synthesis
文献类型：期刊论文
| 作者 | Deng, ZT ; Cao, L ; Tang, FQ ; Zou, BS |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY B
 |
| 出版日期 | 2005 |
| 卷号 | 109期号:35页码:16671 |
| 关键词 | QUANTUM DOTS SEMICONDUCTOR NANOCRYSTALS SOLVOTHERMAL ROUTE NANOPARTICLES PRECURSOR CLUSTERS CDTE |
| ISSN号 | 1520-6106 |
| 通讯作者 | Tang, FQ: Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100101, Peoples R China. |
| 中文摘要 | We report the possible mechanism of forming of CdSe nanocrystals in the high boiling point solvents with long alkane chains and a novel Non-TOP-Based route to zinc-blende CdSe nanocrystals. A new mechanism shows that there exits a redox reaction in the long alkane chain solvents: Se is reduced to H2Se gas; at the same time, the long alkane chains are oxidated to alkene chains; then, the Cd complex reacts with H2Se to form CdSe nanocrystals. Possible chemical reaction equations involved in the process of forming the CdSe nanocrystals have been discussed. The alkene chain and H2Se were detected respectively by a series of experiments to support the new mechanism. Under the guidance of this mechanism, we have developed a much cheaper and greener Non-TOP-Based route for the synthesis of a size series of high-quality zincblende (cubic) CdSe nanocrystals. Low-cost, green, and environmentally friendlier reagents are used, without use of expensive solvents such as trioctylphosphine (TOP) or tributylphosphine (TBP). The new route enables us to achieve high-quality CdSe nanocrystals with sharp ultraviolet and visible (UV-vis) absorption peaks, controllable size (2.0-5.0 nm), bright photoluminescence (PL), narrow PL full width of half-maximum (fwhm) (29-48 nm), and high PL quantum yield (up to 60%) without any size sorting. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/33096]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Deng, ZT,Cao, L,Tang, FQ,et al. A new route to zinc-blende CdSe nanocrystals: Mechanism and synthesis[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2005,109(35):16671. |
| APA | Deng, ZT,Cao, L,Tang, FQ,&Zou, BS.(2005).A new route to zinc-blende CdSe nanocrystals: Mechanism and synthesis.JOURNAL OF PHYSICAL CHEMISTRY B,109(35),16671. |
| MLA | Deng, ZT,et al."A new route to zinc-blende CdSe nanocrystals: Mechanism and synthesis".JOURNAL OF PHYSICAL CHEMISTRY B 109.35(2005):16671. |
入库方式： OAI收割
来源：物理研究所
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