Local charge transport in two-dimensional PbSe nanocrystal arrays studied by electrostatic force microscopy

被引：16

作者：

Hu, ZH ^{[1
]}

Fischbein, MD ^{[1
]}

Drndic, M ^{[1
]}

机构：

[1] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

来源：

NANO LETTERS | 2005年 / 5卷 / 07期

关键词：

D O I：

10.1021/nl050828p

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Two-dimensional PbSe nanocrystal arrays on silicon nitride membranes were investigated using electrostatic force microscopy (EFM) and transmission electron microscopy (TEM). Changes in lattice and transport properties upon annealing in a vacuum were revealed. Local charge transport behavior was directly imaged by EFM and correlated to nanopatterns observed with TEM. Charge transport through nanochannels in complex two-dimensional nanocrystal networks was identified. Our results demonstrate the importance of measurements of local transport details complementary to the conventional current-voltage (I-V) measurements.

引用

页码：1463 / 1468

页数：6

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