A highly efficient light capturing 2D (nanosheet)―1D (nanorod) combined hierarchical ZnO nanostructure for efficient quantum dot sensitized solar cells

A novel hierarchical ZnO nanostructure array composed of nanosheet branched (NB) ZnO nanorods (NRs) has been fabricated using a two-step solution reaction. The obtained nanosheet branched (NB) ZnO nanorods (NRs) exhibited considerably enhanced light capturing compared with ZnO thin films and ZnO nan...

Full description

Saved in:
Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2013-02, Vol.15 (6), p.2109-2116
Main Authors: KIM, Heejin, YONG, Kijung
Format: Article
Language:English
Subjects:
Applied sciences
Branched
Chemistry
Energy
Exact sciences and technology
General and physical chemistry
Nanocomposites
Nanomaterials
Nanostructure
Natural energy
Photovoltaic conversion
Quantum dots
Solar cells
Solar cells. Photoelectrochemical cells
Solar energy
Two dimensional
Zinc oxide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A novel hierarchical ZnO nanostructure array composed of nanosheet branched (NB) ZnO nanorods (NRs) has been fabricated using a two-step solution reaction. The obtained nanosheet branched (NB) ZnO nanorods (NRs) exhibited considerably enhanced light capturing compared with ZnO thin films and ZnO nanorods. This combined 2D (nanosheet) and 1D (nanorod) hierarchical structure has significant potential as an efficient photoanode for quantum dot-sensitized solar cells (QDSSCs) because the nanosheets provide a large surface area for quantum dot loading and the nanorods present pathways for fast charge transfer. The CdSe/CdS co-sensitized QDSSCs using these nanosheet branched (NB) ZnO nanorods (NRs) as a photoanode exhibit a highly enhanced solar-energy conversion efficiency of 4.4% under conditions of 1 sun illumination.
ISSN:1463-9076
1463-9084
DOI:10.1039/c2cp44045h