Two-Dimensional Growth of CdSe Nanocrystals, from Nanoplatelets to Nanosheets

被引：133

作者：

Bouet, Cecile ^{[1
]}

Mahler, Benoit ^{[1
]}

Nadal, Brice ^{[1
]}

Abecassis, Benjamin ^{[2
]}

Tessier, Mickael D. ^{[1
]}

Ithurria, Sandrine ^{[1
]}

Xu, Xiangzhen ^{[1
]}

Dubertret, Benoit ^{[1
]}

机构：

[1] ESPCI Paristech, CNRS, Lab Phys & Etud Mat, F-75005 Paris, France

[2] Univ Paris 11, CNRS, Phys Solides Lab, UMR 8502, F-91405 Orsay, France

来源：

CHEMISTRY OF MATERIALS | 2013年 / 25卷 / 04期

关键词：

two-dimensional; nanocrystal; nanosheets; nanoplatelets; semiconductor; flat; COLLOIDAL NANOSHEETS; QUANTUM BELTS; SEMICONDUCTOR; TRANSISTORS; THICKNESS; NANORODS; INSIGHTS; LIGANDS; DISKS;

D O I：

10.1021/cm304080q

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

We report the continuous lateral extension of cadmium selenide nanoplatelets into nanosheets using continuous injection of precursors at high temperature. We show that we can obtain CdSe nanosheets with lateral dimensions up to 700 nm and a well-defined thickness that can be tuned with atomic precision. When the nanosheets' lateral size increases, they roll on themselves to form nanoscrolls that can unroll upon surface modification. The final geometry of the nanosheets can be tuned to different morphologies using precursors that favor the growth of specific crystal facets. We provide a detailed study of the CdSe nanosheets growth and its optimization for three different thicknesses.

引用

页码：639 / 645

页数：7

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