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The characteristics of pentacene/perylene derivatives based organic solar cells are investigated in this thesis Donor and acceptor layers are pentacene and N N'-dioctyl-3 4 9 10-perylenetetracarboxylic diimide (PTCDI-2~13C) respectively Twelve organic solar cells with pentacene/PTCDI-2~13C heterojunctions were fabricated to study the influence of various alkylic perylene derivatives on the power conversion efficiency Under the sunlight simulator with AM1 5G filter and 100 mW/cm2 the solar cell of pentacene/PTCDI-7C heterojunction with cathode of Ag/Al bilayer has the best performance among the devices with pentacene/PTCDI-2~13C heterojunctions In PL spectrum analyses the pentacene/PTCDI-7C film had lower recombination rate than the other pentacene/PTCDI-2~13C films; therefore more excitons could reach the P/N junction and enhance short-circuit current Furthermore the PTCDI-7C film grown on the surface of penatcene was more matched than other PTCDI films analyzed by the PL peak shifts of 10 nm and 45 nm thick PTCDI-2~13C and images of atomic force microscope More lattice match between the films of pentacene and PTCDI resulted in fewer defects in P/N junction and more carries can reach electrodes Accordingly the power conversion efficiency approach 2% was obtained from the solar cell with the active layer of pentacene/PTCDI-7C
本研究探讨以五环素/骈苯衍生物异质接面太阳能电池之特性,利用pentacene作为电子施体有机材料,PTCDI -2C~13C作为电子受体有机材料,制作出异质接面为pentacene/ PTCDI-2C ~13C等12种有机太阳能电池,比较不同碳数的骈苯衍生物对於有机太阳能电池之光电转换效率之影响。在AM1 5G、100 mW/cm2的模拟太阳光下,以pentacene/PTCDI-7C异质接面太阳能电池具有短路电流9 882 mA/cm2、开路电压0 376 V、填充因数0 523及光电转换效率达1 945%,皆比其他pentacene/PTCDI-2C ~13C异质接面太阳能电池来的大。由薄膜分析可知PTCDI-7C在这12种太阳能电池中具有较低的电子电洞复合发光效率,可以让较多激子到达异质接面进行电荷分离,减少电子电洞对复合发光的机率;此外,由光激发萤光光谱之峰值位移配合原子力显微镜表面结构图,可以得知当PTCDI-7C成长在pentacene上时会顺著pentacene的结构成长薄膜,故较无缺陷产生在P/N接面处;而在其他结构下则无此现象产生,致使在pentacene/PTCDI-7C薄膜中的载子有较大的机会可以移动至电极,使光电流提高,进而使光电转换效率提高。
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NET technology structure dynamic webpage in realizing in system, is it use personnel can choose to analyze the function through interface conveniently to make, the analysis result trends show with the chart; And has fully utilized treatment technology of running side by side, has considered the loss which sets up the index and resource proportionally, make systematic efficiency be optimized. Pass the imperial examinations at the provincial level several systematic example of practical application in thesis, if customer state analysis, income analysis, conversation situation analysis, is it transfer to situation analysis, rival analyze etc. to breathe out, having proved the system through the actual inspection of market analysis personnel, the analysis conclusion drawn from it is accurate, can be believed, and because of is it with chart, it makes to be very clear to analyze person, can catch the focal point easily to mix, have convincingness even more as to policy-making level of enterprises. System produce high benefit relatively already at present, can is it grasp message, consumption situation of customer in real time to realize easily through it, turn from enterprise policymaker to network analysis monthly demand of conclusion into and require that analyses rivals situation every day, draw occupation rate of market key index can know system become market important basis source of decision already, so, the realization of this project has greater actual meaning.
NET技术构建动态网页,使应用人员能方便地通过界面选择分析功能,分析结果动态以图表显示;并充分利用了并行处理技术,对建立索引与资源的损耗均衡考虑,使系统效率得以优化。3、在论文中举了几个系统实际应用的例子,如客户状态分析、收益分析、通话情况分析、呼转情况分析、竞争对手分析等,证明系统经过了市场分析人员的实际检验,从中得出的分析结论准确、可信,并由于配以图表,使分析人员一目了然,可轻易抓住重点,对企业决策层而言则更具说服力。4、系统目前已产生了较高的效益,通过它能轻易实现实时掌握客户的信息、消费情况,从企业决策者对系统分析结论的月需求变为要求每日分析竞争对手情况,得出市场占有率等关键指标可知系统已成为市场决策的重要依据来源,因此,本项目的实现具有较大的实际意义。
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Finally, the guideline for efficiently preparing core-shell structured capsule carrier was tentatively proposed.The cationic, neutral and anionic polysaccharides were separately acted as the liquid core of biomimetic capsule by mimicking the component and function of cell sap. It was found that the electrostatic repulsion interaction between the polysaccharide core and the enzyme enhanced the enzyme activity and stability.
首先,模仿细胞液的成分和功能选用三种具有不同电性的多糖(羧甲基纤维素钠、甲基纤维素和羧甲基壳聚糖钠)作为仿生微囊的液核,经比较可知,与酶分子具有静电排斥作用的多糖更有利于酶构象、活力的维持和酶稳定性的提高;然后,模仿细胞膜的结构和功能构建仿生微囊的壳膜。
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From above, we can know that, the policy the promotion of the formation and development of industry agglomeration should pay attention on the increase of elasticity of substitution among areas and the efficiency of agglomeration. In another word, when the elasticity of substitution is very big, an area can achieve notable effect through small advantage of agglomeration.
由此结论可知,促进一个地区的产业集聚形成和发展的政策应倾向于增大该地区的替代弹性,提高集聚的效率,也就是说,当替代弹性很大时,一个地区用很少的集聚优势因素就能够形成很大的集聚效果,或者,要达到一定的集聚目标只要用很少的集聚优势因素来完成。
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According to the results of the former study in our laboratory, trans-1, 2-cyclohexanediol is produced with a lot of acids and water, for extraction of trans-1, 2-cyclohexanediol from the solution, ethyl acetate and butyl acetate were used as extraction reagents, the solubility data of the trans-1, 2-cyclohexanediol in corresponding mixed solvents of some sorts of acetates and water are needed.
根据本实验室前期研究结果可知,反式-1,2-环己二醇是在酸性和大量水存在的条件下得到的,为了把反式-1,2-环己二醇从反应液中萃取出来,本工艺所采用的萃取剂是乙酸乙酯和乙酸丁酯,需要获得反式-1,2-环己二醇在这些酯类与水混合溶剂中的溶解度数据,因而对反式-1,2-环己二醇进行相关固液相平衡的研究是非常迫切和必要的。
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System produce high benefit relatively already at present, can is it grasp message, consumption situation of customer in real time to realize easily through it, turn from enterprise policymaker to network analysis monthly demand of conclusion into and require that analyses rival's situation every day, draw occupation rate of market key index can know system become market important basis source of decision already, so, the realization of this project has greater actual meaning.
系统目前已产生了较高的效益,通过它能轻易实现实时掌握客户的信息、消费情况,从企业决策者对系统分析结论的月需求变为要求每日分析竞争对手情况,得出市场占有率等关键指标可知系统已成为市场决策的重要依据来源,因此,本项目的实现具有较大的实际意义。
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Via basic and descriptor adverse transformation of matrix, an equivalent standard linear system is derived. Sufficient and necessary conditions are established for observers with disturbance decoupling and LTR in systems. Analysis showed that the necessary and sufficient condition for observers with LTR is disturbance decoupling to any undnown inputs. So it is con verted to the problem that observers are designed with disturbance decoupling.
通过矩阵的初等变换和广义逆变换,将非方广义系统等价地转化为正常状态空间的广义线性系统,并运用有关定理给出观测器具有干扰解耦和环路复现特性的充要条件,经分析可知,系统具有环路复现特性的充要条件是系统对于任何未知输入干扰解耦,则具有环路复现特性的干扰解耦观测器的设计问题转化为系统关于任何扰动都是解耦的。
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Results showed that, the specific refining energy consumption is decreased with increment of rotation speed of the primary refiner. At freeness level of about 670 mL CSF, for example, the specific refining energy consumptions is 363 kWh/t o.d. at 3000 r/min, and 305 kWh/t o.d. at 3500 r/min, which is equivalent to 16% energy saving, furthermore the specific energy consumption is only 265 kWh/t o.d. at 4000 r/min, which means 27% less refining energy required. At the same time, pulps produced at higher refiner speed have higher strength properties and lower shives contents. There is little change of optical properties of the pulps.
结果表明:小叶桉物料在相同条件下进行汽蒸、挤压和化学预浸渍后,分别采用3500 r/min和4000 r/min的盘磨转速进行第一段磨浆,浆料磨至游离度670 mL时所需磨浆电耗与3000 r/min时的相比,分别下降16%和27%;浆料中纤维束含量分别降低20%和35%;第一段磨后浆料再分别经相同盘磨转速(3000 r/min)的后续磨浆后,与相近游离度的浆料性能比较可知,随第一段磨浆盘磨转速的提高,浆料的细小组分含量略有增加,纤维束含量显著降低,强度性能有不同程度的改善,但光学性能变化不显著。
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In the proton, the process that the partons are created and destroyed happen all the time so that the Fock state of proton keep translate from one to another from time to time.
由QCD量子场论的特性可知质子内的部分子数并不是固定的,而是不断的产生和湮灭,因而质子所处的Fock态不断的从一个转变到另一个。
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The nutrients and the blood glucose lowering effect of the two different types of pumpkins were also compared, which indicated that the main nutrient difference type of the two kinds of pumpkin is the content of sugar, and the low-sugar type pumpkin had the better hypoglycaemic effect.
通过对两种不同品种的南瓜果实营养成分的含量及降血糖效果的比较可知,实验采用的两种南瓜营养成分的差异主要是糖含量不同,低糖型南瓜提取的PCE-C的降血糖效果强于高糖型南瓜。
- 推荐网络例句
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Do you know, i need you to come back
你知道吗,我需要你回来
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Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.
1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。
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Chapter Three: Type classification of DE structure in Sino-Tibetan languages.
第三章汉藏语&的&字结构的类型划分。