Two Meyer-Neldel rules in porous silicon

被引：77

作者：

Lubianiker, Y

Balberg, I

机构：

[1] The Racah Institute of Physics, The Hebrew University, Jerusalem

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 12期

关键词：

A-SI-H; ELECTRICAL-PROPERTIES; MESOPOROUS SILICON; OPTICAL-PROPERTIES; FERMI LEVEL; TRANSPORT; CONDUCTIVITY; SHIFT; LAW;

D O I：

10.1103/PhysRevLett.78.2433

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We observe two Meyer-Neldel rules for the dc conductivity in porous silicon. One rule corresponds to extended-states transport and the other to transport by thermally activated hopping. The quantitative resemblance of the first rule to the one found in hydrogenated amorphous silicon (a-Si:H) indicates that in samples in which it is observed the conduction takes place in an a-Si:H-like tissue that wraps the luminescent crystallites. In samples where the second rule is observed the conduction appears to be either by activated hopping in this disordered tissue, or by intercrystallite hopping.

引用

页码：2433 / 2436

页数：4

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