Enhanced Cu2S/CdS coaxial nanowire solar cells by piezo-phototronic effect.
Nano Lett
; 12(6): 3302-7, 2012 Jun 13.
Article
en En
| MEDLINE
| ID: mdl-22642669
ABSTRACT
Nanowire solar cells are promising candidates for powering nanosystems and flexible electronics. The strain in the nanowires, introduced during growth, device fabrication and/or application, is an important issue for piezoelectric semiconductor (like CdS, ZnO, and CdTe) based photovoltaic. In this work, we demonstrate the first largely enhanced performance of n-CdS/p-Cu(2)S coaxial nanowire photovoltaic (PV) devices using the piezo-phototronics effect when the PV device is subjected to an external strain. Piezo-phototronics effect could control the electron-hole pair generation, transport, separation, and/or recombination, thus enhanced the performance of the PV devices by as high as 70%. This effect offers a new concept for improving solar energy conversation efficiency by designing the orientation of the nanowires and the strain to be purposely introduced in the packaging of the solar cells. This study shed light on the enhanced flexible solar cells for applications in self-powered technology, environmental monitoring, and even defensive technology.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Suministros de Energía Eléctrica
/
Energía Solar
/
Sulfuros
/
Compuestos de Cadmio
/
Cobre
/
Nanoestructuras
/
Sistemas Microelectromecánicos
Idioma:
En
Revista:
Nano Lett
Año:
2012
Tipo del documento:
Article
País de afiliación:
Estados Unidos