Light emission from porphyrin molecules induced by a scanning tunneling microscope

被引：21

作者：

Dong, ZC ^{[1
]}

Kar, A

Zou, ZQ

Ohgi, T

Dorozhkin, P

Fujita, D

Yokoyama, S

Terui, T

Yamada, T

Kamikado, T

Zhou, MN

Mashiko, S

Okamoto, T

机构：

[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

[2] Commun Res Labs, Kobe, Hyogo 6512401, Japan

[3] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 2002年 / 41卷 / 7B期

关键词：

scanning tunneling microscopy; photon emission; electroluminescence; tunneling; copper; porphyrin;

D O I：

10.1143/JJAP.41.4898

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Positioning of a scanning tunneling microscope (STM) tip above Cu-tetra-(3,5-di-tertiary-butyl-phenyl)-porphyrin (Cu-TBPP) molecules on Cu(100) is found to induce plasmon-mediated emission and molecular luminescence when bias voltages are above similar to 2.3 V. Optical spectra acquired at a low current of 0.2 nA suggest not only the enhancement effect of the molecules on light emission but also new features associated with the molecules. The quantum efficiency of such light emission excited by inelastic tunneling is on the order of 10(-6) photons per electron.

引用

页码：4898 / 4902

页数：5

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