Nonequilibrium 1/f noise in platinum nanoparticle films

被引：1

作者：

Mihaila, M ^{[1
]}

Ursutiu, D ^{[1
]}

Grigoriu, C ^{[1
]}

Danila, M ^{[1
]}

Steriu, D ^{[1
]}

Craciunoiu, F ^{[1
]}

机构：

[1] Natl Inst Microtechnol, Bucharest, Romania

来源：

2003 INTERNATIONAL SEMICONDUCTOR CONFERENCE, VOLS 1 AND 2, PROCEEDINGS | 2003年

关键词：

D O I：

10.1109/SMICND.2003.1251341

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

1/f noise spectra have been observed in platinum nanoparticle films deposited on SiO2/Si substrates by laser ablation. Although all noise measurements were done in the linear region of the I-V characteristics, both equilibrium (ohmic) and nonequilibrium (nonohmic) behavior was observed in the dependence of the noise intensity on voltage (V). The nonequilibrium 1/f noise was found in some samples of smaller conductivity (small coverage). The sample with the smallest noise intensity features strong sublinear (V0.2-0.37) nonequilibrium 1/f noise for voltages V<0.5V, while for V>0.5V the noise intensity is superliniar (V-3.2). In the (20-300)K temperature range, the film resistance follows a T-1/4 dependence, specific to Mott's phonon-assisted variable range hopping conduction.

引用

页码：43 / 46

页数：4

共 21 条

[1] EVIDENCE FOR SINKING OF SMALL PARTICLES INTO SUBSTRATES AND IMPLICATIONS FOR HETEROGENEOUS CATALYSIS [J].