Open AccessEffect of casting process of polymer active layer on performances of polymer solar cells
Author(s) -
Miao Xu,
Junbiao Peng
Publication year - 2010
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.59.2131
Subject(s) - materials science , casting , drop (telecommunication) , polymer , energy conversion efficiency , electron mobility , layer (electronics) , composite material , optoelectronics , electrical engineering , engineering
Hole mobility of poly2-methoxy-5-2′-ethylhexyloxy-14- phenylenevinylene MEH-PPV film fabricated by spin-casting and drop-casting has been measured by time-of-flight TOF technique. The non-dispersive hole transport current waveform is obtained. The results exhibit that the hole mobility of MEH-PPV prepared by drop-casting is higher than that of the film prepared by spin-casting. The solar cells based on MEH-PPV and fullerene derivative blend films prepared by spin-casting and drop-castingrespectivelywere fabricated. The power-conversion efficiency PCE of the drop-casting device has a great improvement of over 35%compared with that of spin-casting one. The improvement is attributed to the stronger absorption and better balance of electron and hole transport in MEH-PPV polymer films.