Open AccessThe performance of solar cell based on the blend of MEH-PPV∶TiO2
Author(s) -
YU Huang-zhong,
Junbiao Peng,
Jincheng Liu
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.669
Subject(s) - materials science , nanorod , energy conversion efficiency , optoelectronics , open circuit voltage , ultraviolet , short circuit , solar cell , current density , acceptor , spectroscopy , absorption (acoustics) , photoluminescence , voltage , nanotechnology , composite material , physics , condensed matter physics , quantum mechanics
The solar cells based on the blend of MEH-PPV(poly(2-methoxy-5-(2′-ethylhexoxy)- 1,4-phenylene vinylene) as donor and TiO2 nanorods as acceptor were fabricated. We analyzed the cause of performance change of the device in detail by the ultraviolet-visible absorption spectroscopy(UV-vis), photoluminescence spectroscopy(PL), the current density-voltage(J-V) curve. When TiO2 nanorods are dispersed in a polymer matrix, the performance of the device is greatly enhanced. The highest efficiency is achieved for the 1∶3 (MEH-PPV: TiO2 nanorods) weight ratio composition. We get an open circuit voltage of 0.7V, short circuit current density of 0.41 mA/cm2 and fill factor of 31.8% under air-mass 1.5 solar simulator illumination, yielding a 0.091% power conversion efficiency (PCE)which is a nearly 60 times enhancement over the PCE of the device based on the MEH-PPV as active layer. The device PCE is further increased twofold by refluxing in phenthiol.