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Detailed analysis of ultrathin fluorescent red dye interlayer for organic photovoltaic cells
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作者 臧月 于军胜 +1 位作者 王娜娜 蒋亚东 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第1期557-561,共5页
The influence of an ultrathin 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB) fluorescent dye layer at donor/acceptor heterojunction on the performance of small-molecule o... The influence of an ultrathin 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB) fluorescent dye layer at donor/acceptor heterojunction on the performance of small-molecule organic photovoltaic (OPV) cell is studied. The structure of OPV cell is of indium-tin oxide (ITO)/copper phthalocyanine (CuPc)/DCJTB/fullerene (C60)/bathophenantbroline (Bphen)/Ag. The results show that open circuit voltage (Voc) increases to 0.57 V as the film thickness of DCJTB layer increases from 0.2 to 2.0 nm. By using an equivalent circuit model, the enhancement of VOC is found to be attributed to the reduced reverse saturation current density (Js) which is due to the lower highest occupied molecular orbital (HOMO) level in DCJTB than that in CuPc. Also, the short circuit current density (JSC) is affected when the DCJTB layer becomes thicker, resulting from the high series resistance RsA due to the low charge carrier mobility of fluorescent red dye. 展开更多
关键词 organic photovoltaic (OPV) cells DCJTB interlayer thickness ultrathin red dye
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Design and preparation of frequency doubling antireflection coating with different thicknesses of interlayer for LiB3O5 crystal 被引量:5
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作者 邓震霞 高慧慧 +3 位作者 肖连君 贺洪波 范正修 邵建达 《Chinese Optics Letters》 SCIE EI CAS CSCD 2007年第1期60-62,共3页
Design and preparation of frequency doubling antireflection coating with different thicknesses of interlayer were investigated for LIB3O5 (LBO) substrate. The design was based on the vector method. The thickness of ... Design and preparation of frequency doubling antireflection coating with different thicknesses of interlayer were investigated for LIB3O5 (LBO) substrate. The design was based on the vector method. The thickness of the inserted SiO2 interlayer could be changed in a wide range for the four-layer design with two zeros at 1064 and 532 nm. The coatings without any interlayer and with 0.1 quarter-wave (λ/4), 0.3 λ/4, 0.5 λ/4 SiO2 interlayer were deposited respectively on LBO by using electron beam evaporation technique. All the prepared coatings with SiO2 interlayer indicated satisfying optical behavior. This expanded our option for the thickness of an interlayer when coating on LBO substrate. The prepared films with SiO2 interlayer showed better adhesion than that without any interlayer. The thickness of the interlayer affected the adhesion, the adhesion for the coating with 0.5 λ/4 SiO2 interlayer was not as good as the other two. 展开更多
关键词 LBO Design and preparation of frequency doubling antireflection coating with different thicknesses of interlayer for LiB3O5 crystal
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Effect of plastic deformation on diffusion-rolling bonding of steel sandwich plates 被引量:1
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作者 Hong Li Jingtao Han 《Journal of University of Science and Technology Beijing》 CSCD 2006年第6期532-537,共6页
Diffusion bonding is one of the most important techniques for composite materials, while bonding temperature, holding time,and rolling reduction are the key parameters that affect the bonding strength of sandwich plat... Diffusion bonding is one of the most important techniques for composite materials, while bonding temperature, holding time,and rolling reduction are the key parameters that affect the bonding strength of sandwich plates. To study the effect of plastic deformation on the bonding strength, laboratory experiments were carried on a Gleeble Thermal Simulator to imitate the diffusion-rolling bonding under different reductions for steel sandwich plates. The bonding strength and interlayer film thickness were measured, and the element diffusion was analyzed using line scanning. The relationship between the bonding strength and “diffused interlayer” thickness was investigated. It has been found that the bonding strength increases with reduction, whereas the interlayer film thickness decreases gradually as the reduction increases. The diffusion under plastic deformation is obviously enhanced in comparison with that of nil reduction. The mechanism of plastic deformation effect on the diffusion bonding and related models have been discussed. 展开更多
关键词 steel sandwich plate diffusion-bonding plastic deformation bonding strength interlayer film thickness diffusion mechanism models
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