Improved Optoelectronic Properties of Silicon Nanocrystals/Polymer Nanocomposites by Microplasma-Induced Liquid Chemistry

被引：33

作者：

Mitra, Somak ^{[1
]}

Cook, Steffan ^{[1
]}

Svrcek, Vladimir ^{[2
]}

Blackley, Ross A. ^{[3
]}

Zhou, Wuzong ^{[3
]}

Kovac, Janez ^{[4
]}

Cvelbar, Uros ^{[4
]}

Mariotti, Davide ^{[1
]}

机构：

[1] Univ Ulster, NIBEC, Newtownabbey BT37 0QB, North Ireland

[2] AIST, Res Ctr Photovolta Technol, Tsukuba, Ibaraki 3058568, Japan

[3] Univ St Andrews, Sch Chem, EaStChem, St Andrews KY16 9ST, Fife, Scotland

[4] Jozef Stefan Inst, Ljubljana 1000, Slovenia

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2013年 / 117卷 / 44期

基金：

英国工程与自然科学研究理事会;

关键词：

POROUS SILICON; OPTICAL-PROPERTIES; SURFACE-CHEMISTRY; TEMPERATURE; FILMS; LASER; 3,4-ETHYLENEDIOXYTHIOPHENE; PHOTOLUMINESCENCE; NANOPARTICLES; SILANIZATION;

D O I：

10.1021/jp400938x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have demonstrated that three-dimensional (3D) surface engineering of silicon nanocrystals (SiNCs) by direct current microplasma processing in water with poly(3,4-ethylenedioxythiophene) doped by poly(styrenesulfonate) (PEDOT:PSS) can lead to nanocomposites with enhanced optoelectronic performance. Specifically, we have successfully shown improved photoluminescence properties of SiNCs inside water-based solution. The results also confirm that SiNCs become stable in water with potential application impact for biorelated applications. We have also shown that the microplasma processing in the presence of the polymer helps prevent the fast oxidation process over a longer period of time in comparison to the unprocessed sample. Furthermore, the assessment of transport properties confirmed the improvement of exciton dissociation after microplasma surface engineering; this can have direct implications for higher performance optoelectronic devices including solar cells.

引用

页码：23198 / 23207

页数：10

共 65 条

[1] Silanization of Low-Temperature-Plasma Synthesized Silicon Quantum Dots for Production of a Tunable, Stable, Colloidal Solution [J].