Quantum-dots-sensitized solar cells based on vertically ranged titanium dioxide nanotubes

ABSTRACT

CdS and CdSe quantum-dots-sensitized solar cells (QDSSC) consisted of highly ordered, vertically oriented TiO₂ nanotubes were reported. TiO₂ nanotubes served both as a large-area support for quantum dots and high-efficiency electron-transporting medium. Anodization method was investigated to fabricate nanotubes directly growing on Ti foil with various anodization time. Under illumination of one sun, the as-obtained QDSSC provided a power conversion efficiency of 1.61%.

KEYWORDS:

• Quantum dots
• solar cells
• TiO₂ nanotube

Funding

This work was financially supported by National Nature Science Foundation of China (51172072), and the Focus of Scientific and Technological Research Projects (109063).

Nomenclature

QDs	=	Quantum dots
QDSSCs	=	Quantum dots-sensitized solar cells
FESEM	=	Field emission scanning electron microscope
Symbols	=
η	=	Power conversion efficiency
h	=	Hour, hours
JSC	=	Short-circuit current density
VOC	=	Open-circuit voltage
FF	=	Fill factor

Additional information

Funding

This work was financially supported by National Nature Science Foundation of China (51172072), and the Focus of Scientific and Technological Research Projects (109063).