Photoluminescence and band gap modulation in graphene oxide

被引：492

作者：

Luo, Zhengtang ^{[1
]}

Vora, Patrick M. ^{[1
]}

Mele, Eugene J. ^{[1
]}

Johnson, A. T. Charlie ^{[1
]}

Kikkawa, James M. ^{[1
]}

机构：

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

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 11期

关键词：

energy gap; graphene; photoluminescence; reduction (chemical); GRAPHITE OXIDE; BERRYS PHASE;

D O I：

10.1063/1.3098358

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report broadband visible photoluminescence from solid graphene oxide, and modifications of the emission spectrum by progressive chemical reduction. The data suggest a gapping of the two-dimensional electronic system by removal of pi-electrons. We discuss possible gapping mechanisms, and propose that a Kekule pattern of bond distortions may account for the observed behavior.

引用

页数：3

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