A hybrid heterojunction based on fullerenes and surfactant-free, self-assembled, closely packed silicon nanocrystals

被引：31

作者：

Svrcek, V. . ^{[1
]}

Mariotti, D. ^{[2
]}

Shibata, Y. ^{[1
]}

Kondo, M. ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Res Ctr Photovolta, Tsukuba, Ibaraki 3058568, Japan

[2] Univ Ulster, Nanotechnol & Adv Mat Res Inst NAMRI, Newtownabbey BT37 0QB, Antrim, North Ireland

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2010年 / 43卷 / 41期

关键词：

OPTICAL-PROPERTIES; POROUS SILICON; NANOPARTICLES; GENERATION; PRESSURE; FILMS;

D O I：

10.1088/0022-3727/43/41/415402

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate that nanosecond-pulsed laser chemistry in water leads to closely packed and stable luminescent assemblies of silicon nanocrystals (SiNCs) that can be electronically coupled with fullerenes (C-60) without any additional surfactant or catalyst. We show that the fragmentation time in water determines the photoluminescence (PL) intensity (>40%) and redshifts the PL maxima (45 nm) of the SiNCs. Heterojunction solar cells made out of these laser-produced self-assemblies of SiNCs and C-60 show photovoltaic action with increased quantum efficiency in the region where the absorption of SiNCs appears.

引用

页数：8

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