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Small molecule solar cells with structure of ITO/ZnPc/C60/LiF/Al were fabricated by vacuum evaporation method, and thermal annealing treatment was considered to be an effective and economized approach to further improve the power conversion efficiency and lifetime of devices. The optimal annealing process was 100 °C, 20min in air ambient, and it respectively promoted the power conversion efficiency...
E-learning is a new teaching model nowadays. It gets further development and improvement with the impetus of the Virtual Reality (VR) technology which can build a friendly human-machine interface. The application of VR technology in education has greatly enriched the form of teaching and learning. The pattern which integrates the VR and e-learning technology not only riches teaching patterns but also...
A class of hyperchaos is modeled based on a modified smooth three-dimensional chaotic system by adding a feedback controller. The new hyperchaos has two very large positive Lyapunov exponents in a quite wide parameter region through observing the Lyapunov exponents spectra. Some simulations of the phase portraits of hyperchaotic attractors are made to show the complicated system orbits. The Poincare...
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