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ANALYSIS ON THERMAL ELASTO-PLASTIC ASPERITY CONTACTS OF LAYERED MEDIA 被引量:1
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作者 TONG Ruiting LIU Geng ZENG Quanren LIU Tianxiang 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2008年第2期5-12,共8页
A thermal elasto-plastic asperity contact model is investigated, which takes into account the steady-state heat transfer and the asperity distortion due to thermal elasto-plastic deformations. A hard coating and a sof... A thermal elasto-plastic asperity contact model is investigated, which takes into account the steady-state heat transfer and the asperity distortion due to thermal elasto-plastic deformations. A hard coating and a soft coating are applied to study the correlations between contact area and contact pressure, average gap and contact pressure, coating thickness and contours of the contact stress distribution, etc. The effects of material properties, coating thickness, frictional coefficient, and the heat input combinations on the stress distribution are investigated and discussed. The frictional heat input increases the maximum value of yon Mises stress. Finally, the appropriate thickness of the hard coating is also discussed. To protect the substrate, one can choose hard coating and the thickness of that is suggested that can be hc=70 Rm. 展开更多
关键词 Thermal elasto-plastic contact Rough surfaces coating
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Influence of annealing temperature of ZnO film as the electron transport layer on the performance of polymer solar cells 被引量:5
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作者 李永富 张亚光 +1 位作者 刘俊良 王青圃 《Optoelectronics Letters》 EI 2015年第4期260-263,共4页
The surface morphology of Zn O films at different annealing temperatures and the performance of polymer solar cells(PSCs) with Zn O as the electron transport layer are studied.The low temperature sol-gel processed Zn ... The surface morphology of Zn O films at different annealing temperatures and the performance of polymer solar cells(PSCs) with Zn O as the electron transport layer are studied.The low temperature sol-gel processed Zn O film has smoother surface than that in higher temperature,which results in the best photovoltaic performance with a power conversion efficiency(PCE) of 3.66% for P3HT:PC61BM based solar cell.With increasing annealing temperature,the photovoltaic performance first deceases and then increases.It could be ascribed to the synergy effects of interface area,the conductivity and surface energy of Zn O film and series resistance of devices. 展开更多
关键词 annealing photovoltaic processed coated diameters roughness annealed interfacial hydrothermal silver
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