To realize the high efficiency organic photovoltaics (OPVs), two critical requirements have to be fulfilled: (1) increasing the photon energy absorption range of the active layer, and (2) improving charge separation and transport in the active layer. This study reports the utilization of THC8, a novel fluorescence-based polymer containing propeller-shaped di-triarylamine and fluorene moieties in the active layer consisting of poly-3-hexylthiophene and [6,6]-phenyl-C61-butyric acid methyl ester to form a ternary bulk heterojunction. The results showed that the high absorbance and strong fluorescence of THC8 at 420 and 510 nm, respectively, broadened the spectral absorption of the OPV, possibly through Förster resonance energy transfer.
View Article and Find Full Text PDFThe aim of this study was to investigate the effect of gold nanoparticle (Au NP)-induced surface plasmons on the performance of organic photovoltaics (OPVs) that consist of copper phthalocyanine and fullerene as the active materials. The photon absorption can be enhanced by immobilization of surfactant-stabilized Au NPs on a self-assembled monolayer-modified indium tin oxide (ITO) electrode, and thus, the photocurrent as well as the power conversion efficiency (PCE) of these OPVs can be improved. Varying the density of the immobilized Au NPs in the devices provided no significant variation in the charge mobility but it did enhance the photocurrent.
View Article and Find Full Text PDFRecent studies demonstrated that freshwater clam (Corbicula fluminea) has lipid-lowering and hepatoprotective activities, but its effect on immune responses has not yet been addressed. Here we showed that ethanol extracts of C. fluminea (ECF) reduced nitrite oxide, interleukin-1beta, interleukin-6, and tumor necrosis factor-alpha in lipopolysaccharide-activated macrophages.
View Article and Find Full Text PDFThere have been only few studies to substantiate the kinematic characteristics of cursor movement. In this study, a quantitative experimental research method was used to explore the effect of moving direction on the kinematics of cursor movement in 24 typical young persons using our previously developed computerized measuring program. The results of multiple one way repeated measures ANOVAs and post hoc LSD tests demonstrated that the moving direction had effects on average velocity, movement time, movement unit and peak velocity.
View Article and Find Full Text PDFBased on the concept of iconicity, the iconicity hypothesis was emphasized for decades. The aims of this study were to explore the effect of translucency on transparency and symbol learning for children with and without cerebral palsy. Twenty children with cerebral palsy and forty typical peers participated in the study.
View Article and Find Full Text PDFThe purpose of this study was to compare the performance of mouse pointing and selecting in the tasks with different index of difficulty between 20 pupils with intellectual disabilities and 21 pupils without disabilities. A mouse proficiency assessment software was utilized to collect data. Pupils with intellectual disabilities executed tasks more correctly in bigger target even in tasks with the same index of difficulty.
View Article and Find Full Text PDFThe purpose of the study was to examine the effectiveness of picture-fading techniques in a multimedia learning system for Chinese word-recognition instruction. A single-subject, multiple-probe baseline design across participants was used. Three first-grade students with multiple disabilities participated in this study.
View Article and Find Full Text PDFLearning to use computers and/or using computers to learn has become a part of everyday life for most students. Unfortunately, students with mental retardation in Taiwan, especially those with moderate or severe mental retardation, are often not considered capable of utilizing computers and online learning. It is common for students with moderate or severe mental retardation to have poor vocabulary, or even be illiterate.
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