Nanoimprinting-induced efficiency enhancement in organic solar cells
2011; American Institute of Physics; Volume: 99; Issue: 18 Linguagem: Inglês
10.1063/1.3659471
ISSN1520-8842
AutoresWei‐Yang Chou, Jay Chang, Chia-Te Yen, Fu‐Ching Tang, Horng‐Long Cheng, Ming‐Hua Chang, Steve Lien‐Chung Hsu, Jen‐Sue Chen, Yung-Chun Lee,
Tópico(s)Thin-Film Transistor Technologies
ResumoThe performance of bilayer heterojunction, pentacene and perylene tetracarboxylic diimide organic solar cells (OSC) is dramatically enhanced by performing nanoimprinting on the hole transport layer in which poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) nanogratings are built. A standard OSC embeded with PEDOT:PSS gratings enables photocarriers to move toward electrodes. In particular, the visualization of morphologies for these heterojunction layers reveals pillar-like grains that are induced by the geometric effect of PEDOT:PSS gratings. Toghther with analyzing absorption and time-resolved photoluminescence spectra, a consistent correlation between OSC performance, photophysical data, and pillar-like morphology has been obtained for the device with imprinted PEDOT:PSS nanogratings.
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