Topological Insulator Nanostructures for Near-infrared Transparent Flexible Electrodes

Overview

Journal Nat Chem

Specialty Chemistry

Date 2012 Mar 23

PMID 22437712

Citations 38

Authors

Hailin Peng

Wenhui Dang

Jie Cao

Yulin Chen

Di Wu

Wenshan Zheng

Hui Li

Zhi-Xun Shen

ZhongFan Liu

Affiliations

Soon will be listed here.

Abstract

Topological insulators are an intriguing class of materials with an insulating bulk state and gapless Dirac-type edge/surface states. Recent theoretical work predicts that few-layer topological insulators are promising candidates for broadband and high-performance optoelectronic devices due to their spin-momentum-locked massless Dirac edge/surface states, which are topologically protected against all time-reversal-invariant perturbations. Here, we present the first experimental demonstration of near-infrared transparent flexible electrodes based on few-layer topological-insulator Bi(2)Se(3) nanostructures epitaxially grown on mica substrates by means of van der Waals epitaxy. The large, continuous, Bi(2)Se(3)-nanosheet transparent electrodes have single Dirac cone surface states, and exhibit sheet resistances as low as ~330 Ω per square, with a transparency of more than 70% over a wide range of wavelengths. Furthermore, Bi(2)Se(3)-nanosheet transparent electrodes show high chemical and thermal stabilities as well as excellent mechanical durability, which may lead to novel optoelectronic devices with unique properties.

Citing Articles

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