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具有近红外光致发光特性的掺氯化银硒化镉量子点

AgCl-doped CdSe quantum dots with near-IR photoluminescence.

作者信息

Kotin Pavel Aleksandrovich, Bubenov Sergey Sergeevich, Mordvinova Natalia Evgenievna, Dorofeev Sergey Gennadievich

机构信息

Department of Chemistry, Lomonosov Moscow State University, 1 building 3 Leninskie Gory, Moscow 119991, Russia.

Laboratoire CRISMAT, UMR6508, CNRS-ENSICAEN, 6 boulevard Marechal Juin, Caen 14050, France.

出版信息

Beilstein J Nanotechnol. 2017 May 29;8:1156-1166. doi: 10.3762/bjnano.8.117. eCollection 2017.

DOI:10.3762/bjnano.8.117
PMID:28685116
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5480357/
Abstract

We report the synthesis of colloidal CdSe quantum dots doped with a novel Ag precursor: AgCl. The addition of AgCl causes dramatic changes in the morphology of synthesized nanocrystals from spherical nanoparticles to tetrapods and finally to large ellipsoidal nanoparticles. Ellipsoidal nanoparticles possess an intensive near-IR photoluminescence ranging up to 0.9 eV (ca. 1400 nm). In this article, we explain the reasons for the formation of the ellipsoidal nanoparticles as well as the peculiarities of the process. The structure, Ag content, and optical properties of quantum dots are also investigated. The optimal conditions for maximizing both the reaction yield and IR photoluminescence quantum yield are found.

摘要

我们报道了一种掺杂新型银前驱体AgCl的胶体CdSe量子点的合成。AgCl的加入使合成的纳米晶体形态发生了显著变化，从球形纳米颗粒变为四足状，最终变为大的椭圆形纳米颗粒。椭圆形纳米颗粒具有高达0.9 eV（约1400 nm）的强烈近红外光致发光。在本文中，我们解释了椭圆形纳米颗粒形成的原因以及该过程的特点。还研究了量子点的结构、银含量和光学性质。找到了使反应产率和红外光致发光量子产率最大化的最佳条件。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/bb0ee5c7593d/Beilstein_J_Nanotechnol-08-1156-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/3c2c351951cc/Beilstein_J_Nanotechnol-08-1156-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/dc492d4eb2fb/Beilstein_J_Nanotechnol-08-1156-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/ddd424df8958/Beilstein_J_Nanotechnol-08-1156-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/ec9077701ac2/Beilstein_J_Nanotechnol-08-1156-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/e5fd4bc62ff3/Beilstein_J_Nanotechnol-08-1156-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/b7272fc87ac8/Beilstein_J_Nanotechnol-08-1156-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/bd3f98b9271b/Beilstein_J_Nanotechnol-08-1156-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/a7bec49d4bcb/Beilstein_J_Nanotechnol-08-1156-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/e7e4c879e1c7/Beilstein_J_Nanotechnol-08-1156-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/b800abfb4ebb/Beilstein_J_Nanotechnol-08-1156-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/bb0ee5c7593d/Beilstein_J_Nanotechnol-08-1156-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/3c2c351951cc/Beilstein_J_Nanotechnol-08-1156-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/dc492d4eb2fb/Beilstein_J_Nanotechnol-08-1156-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/ddd424df8958/Beilstein_J_Nanotechnol-08-1156-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/ec9077701ac2/Beilstein_J_Nanotechnol-08-1156-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/e5fd4bc62ff3/Beilstein_J_Nanotechnol-08-1156-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/b7272fc87ac8/Beilstein_J_Nanotechnol-08-1156-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/bd3f98b9271b/Beilstein_J_Nanotechnol-08-1156-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/a7bec49d4bcb/Beilstein_J_Nanotechnol-08-1156-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/e7e4c879e1c7/Beilstein_J_Nanotechnol-08-1156-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/b800abfb4ebb/Beilstein_J_Nanotechnol-08-1156-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4302/5480357/bb0ee5c7593d/Beilstein_J_Nanotechnol-08-1156-g012.jpg

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本文引用的文献

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Excitation Energy Dependence of the Photoluminescence Quantum Yields of Core and Core/Shell Quantum Dots.核心及核壳量子点光致发光量子产率的激发能量依赖性
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Photoluminescence Blinking and Reversible Electron Trapping in Copper-Doped CdSe Nanocrystals.铜掺杂的硒化镉纳米晶体中的光致发光闪烁和可逆电子俘获。
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