TY - JOUR
T1 - Long afterglow SrAl2O4:Eu,Dy phosphors for CdS quantum dot-sensitized solar cells with enhanced photovoltaic performance
AU - Sun, Hengchao
AU - Pan, Likun
AU - Piao, Xianqing
AU - Sun, Zhuo
PY - 2013/6/7
Y1 - 2013/6/7
N2 - An efficient bifunctional structured layer composed of long afterglow SrAl2O4:Eu,Dy phosphors on top of a transparent layer of nanocrystalline TiO2 was fabricated for use in CdS quantum dot-sensitized solar cells (QDSSCs). The introduction of SrAl2O 4:Eu,Dy increases the photocurrent of the QDSSCs mainly due to enhanced light harvesting abilities via improved light absorption and scattering. Under one sun illumination (AM 1.5G, 100 mW cm-2), cells containing SrAl2O4:Eu,Dy show a marked improvement in their conversion efficiency (1.24%) compared with cells without SrAl 2O4:Eu,Dy (0.98%). After one sun illumination for 1 min, after which the light source was turned off, cells containing SrAl 2O4:Eu,Dy show an efficiency of 0.07% under dark conditions due to the irradiation by the long persistent light from SrAl 2O4:Eu,Dy. The present strategy should provide a possibility to fulfil the operation of solar cells even in the dark.
AB - An efficient bifunctional structured layer composed of long afterglow SrAl2O4:Eu,Dy phosphors on top of a transparent layer of nanocrystalline TiO2 was fabricated for use in CdS quantum dot-sensitized solar cells (QDSSCs). The introduction of SrAl2O 4:Eu,Dy increases the photocurrent of the QDSSCs mainly due to enhanced light harvesting abilities via improved light absorption and scattering. Under one sun illumination (AM 1.5G, 100 mW cm-2), cells containing SrAl2O4:Eu,Dy show a marked improvement in their conversion efficiency (1.24%) compared with cells without SrAl 2O4:Eu,Dy (0.98%). After one sun illumination for 1 min, after which the light source was turned off, cells containing SrAl 2O4:Eu,Dy show an efficiency of 0.07% under dark conditions due to the irradiation by the long persistent light from SrAl 2O4:Eu,Dy. The present strategy should provide a possibility to fulfil the operation of solar cells even in the dark.
UR - https://www.scopus.com/pages/publications/84877653389
U2 - 10.1039/c3ta10596b
DO - 10.1039/c3ta10596b
M3 - 文章
AN - SCOPUS:84877653389
SN - 2050-7488
VL - 1
SP - 6388
EP - 6392
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
IS - 21
ER -
