An energy-harvesting scheme employing CuGaSe2 quantum dot-modified ZnO buffer layers for drastic conversion efficiency enhancement in inorganic-organic hybrid solar cells.
Nanoscale
; 5(14): 6350-5, 2013 Jul 21.
Article
en En
| MEDLINE
| ID: mdl-23455444
ABSTRACT
We demonstrated a promising route to enhance the performance of inverted organic photovoltaic (OPV) devices by the incorporation of CuGaSe2 (CGS) quantum dots (QDs) into the ZnO buffer layer of P3HTPCBM-based devices. The modification of QDs provides better band alignment between the organic/cathode interface, improves ZnO crystal quality, and increases photon absorption, leading to more effective carrier transport/collection. By employing this energy-harvesting scheme, short-circuit current density, open-circuit voltage, and fill factor of the OPV device after CGS QD modification are improved by 9.43%, 7.02% and 6.31%, respectively, giving rise to a 23.8% enhancement in the power conversion efficiency.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Selenio
/
Energía Solar
/
Óxido de Zinc
/
Compuestos de Selenio
/
Cobre
/
Galium
/
Puntos Cuánticos
/
Galio
Idioma:
En
Revista:
Nanoscale
Año:
2013
Tipo del documento:
Article
País de afiliación:
Taiwán