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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。

In children's dental clinics are full of children in urgent need of treatment, although the standard of living of the people than ever before to upgrade, more and more parents understand the importance of primary teeth of children are willing to make every effort to safeguard children's oral health, but I do not know how to proceed, making more and more children aged 2-4 to be the so-called "baby bottle tooth decay sexual."

在儿童牙科门诊中充满了急待治疗的小朋友，虽然国人的生活水准较以往提升，越来越多的家长也能了解乳牙对小朋友的重要，愿意尽力来维护孩子们的口腔健康，却不知如何着手，使得越来越多2—4岁的儿童得到所谓"奶瓶性蛀牙"。

The more you learn, the more you know, the more you know, and the more you for bbs.

学的越多，知道的越多，知道的越多，忘记的越多，忘记的越多，知道的越少，为什么学

This would allow for a more efficiently designed upper (since it wouldn't have to be extended out and down to cover the midsole) and a more ergonomically designed outsole (it could be more rounded to provide a more "natural" feel).

这将使鞋面（因为它不须向下延伸用以覆盖中底）和中底（它可以更加的流畅显得更加的自然）的设计更符合人体工程学。

The only thing I appreciate them are the more and more decorated covers, more and more bewildering advertisement.

第一唯一的事物感激他们是越来越多的被装饰的掩护，越来越令人困惑的 advertisement。

He sold every year in the market more than 4000 tons of Yangzhou blackfish, Yangzhou total market of more than 70% of sales, to that end, he earn more than 300 million a year, also brought along more than 400 wealthy households in the village.

他每年在扬州市场卖4000多吨黑鱼，占整个扬州市场销售量的70%以上，为此，他一年能赚300多万元，还带动了400多户村民发家致富。

The people who live in present society are getting more and more blundering. More and more persons only pay attention to money, so that many people aren't happy.

生活在现在社会中的人越来越浮燥，越来越多的人以金钱为导向，以至很多人过得并不快乐。

And with China's growth still at a breakneck pace, there are more and more people with more and more skills.

然而，以中国目前飞快的成长速度，"会有越来越多拥有多门技能的工人。"

Current, more and more capital are in step national boundaries flow, more and more countries can capital of finance of international of bring into contact with.

目前，越来越多的资金在跨国界流动，越来越多的国家都能接触到国际金融资本。

Thirdly, Lower-grade plants such as lichen, bryozoan etc. begin to grow. Along with the accumulation of living beings is going more and more, the amount of organic matter in the parent material forming soil is going more and more, Then higher-grade plants gradually replace lower-grade plants, and through strong and extensive root system, the dispersive and soluble nutrition can be concentrated. After the death of organisms, and through decomposition of microbes, one part of the remains of the organisms becomes nutrients for plants, and another part of the remains turns into humus.

第三步，地衣、苔藓类低等植物开始生长，随着生物的积累作用越来越大，成土母质中的有机物数量不断增加，最后高等植物逐渐取代了低等植物，通过强大的根系把分散的可溶性养分集中起来，等到这些生物死亡之后，它们的残体经过微生物的分解作用，一部分成为后来植物所需的养分，另一部分变成了腐殖质。

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。