Hydrothermal synthesis of ZnSe:Cu quantum dots and their luminescent mechanism study by first-principles
文献类型：期刊论文
| 作者 | Liang QS ; Bai YJ ; Han L ; Deng XL ; Wu XJ ; Wang ZC ; Liu XJ ; Meng J |
| 刊名 | journal of luminescence
 |
| 出版日期 | 2013 |
| 卷号 | 143页码:185-192 |
| 关键词 | DOPED ZNSE SEMICONDUCTOR NANOCRYSTALS COLOR MANGANESE EMITTERS STATE TRANSITION EMISSIONS EFFICIENT ROUTE |
| ISSN号 | 0022-2313 |
| 通讯作者 | liu xj |
| 中文摘要 | an one-pot synthesis of aqueous znse:cu nanocrystals (ncs) is realized in aqueous solution by a facile yet efficient hydrothermal technique. the dopant emission spectrum of the ncs is tunable, spanning a wide range from 438 to 543 nm. room-temperature quantum yield for the ncs prepared at the optimal conditions reaches as high as 20% without any post-treatment. the znse:cu ncs prepared in a neutral aqueous solution (ph=8) are remarkably stable and exhibit comparatively high photoluminescent quantum yield (pl qy) as high as 17%. first-principles pseudopotential calculations using plane-wave basis functions have been performed. the formation energies of copper ions occupied in the interstitial octahedron and substitutional tetrahedral zn2+ sites have been calculated. the occupation of copper ions in the interstitial octahedral site is found to be more thermodynamics-facilitated by -0.98 ev. the density of state analysis indicates that the cu-related emission is primary dominated by the substitutional tetrahedral cu ions, and the large dopant related emission width of znse:cu ncs originated from the corresponding cu 3d impurity band. (c) 2013 elsevier b.v. all rights reserved. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000323912400033 |
| 公开日期 | 2014-04-15 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/49520]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liang QS,Bai YJ,Han L,et al. Hydrothermal synthesis of ZnSe:Cu quantum dots and their luminescent mechanism study by first-principles[J]. journal of luminescence,2013,143:185-192. |
| APA | Liang QS.,Bai YJ.,Han L.,Deng XL.,Wu XJ.,...&Meng J.(2013).Hydrothermal synthesis of ZnSe:Cu quantum dots and their luminescent mechanism study by first-principles.journal of luminescence,143,185-192. |
| MLA | Liang QS,et al."Hydrothermal synthesis of ZnSe:Cu quantum dots and their luminescent mechanism study by first-principles".journal of luminescence 143(2013):185-192. |
入库方式： OAI收割
来源：长春应用化学研究所
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