大面积并联染料敏化太阳电池的优化与设计

通过分析染料敏化太阳电池活性层电荷分布和电极表面的电流分布,提出了一个大面积染料敏化太阳电池的数学模型,并实验验证了模型的可靠性．以大面积并联染料敏化太阳电池为例,模拟研究了不同结构参数下电池的输出性能,结果表明当电池的材料和制作工艺一定时,通过优化电池的结构参数能获得最大的光电转换效率．     

染料敏化太阳电池的光生电流对短路电流的影响

等效电路分析和实验结果证实,染料敏化太阳电池的光生电流显著地影响着电池电压-电流曲线中的短路电流.首先根据等效电路分析,得出了染料敏化太阳电池的光生电池值,以及理论上光生电流对短路电流的影响.进一步的电池制备和效率测试,证明了上述的理论计算论断.最后,根据光生电流与短路电流的关系,本文提出了通过提高光生电流来提高短路电流,最终提高染料敏化太阳电池效率的思路,并按照上述思路得到了电池效率提升20%的试验结果.     

染料敏化太阳电池及其光阳极研究

染料敏化太阳电池因其安全无毒、制作工艺简单、成本低廉等优势,在研究和开发方面得到广泛关注和重视。该文介绍了染料敏化太阳电池及其光阳极研究进展。指出了染料敏化太阳电池光阳极新材料和结构改进努力的方向。     

染料敏化太阳电池的研究进展

本文叙述了染料敏化太阳电池的结构及其原理,对于燃料敏化太阳电池的关键技术的研究进展进行了重点综述,并对染料敏化太阳电池面对的问题及前景进行了展望。     

国内新闻

染料敏化太阳电池研究新进展 中国科学院长春应用化学研究所王蘑课题组在高性能有机染料敏化太阳电池研究方面取得重要进展,研制出一个具有高吸收系数的有机染料C217,该染料在以乙腈为电解质溶剂的器件中达到了9．8％的光电转换效率;结合无溶剂离子液体电解质,实现了光电转换效率达8．1％的长期光热稳定的染料敏化太阳电池。     

叠层太阳电池的研究进展

由不同禁带宽度的子电池组合成的叠层太阳电池,可以有效增加太阳电池对入射光子的能量吸收,以达到提高其转换效率的目的.本文评述了各类叠层光伏器件,如化合物叠层太阳电池、硅基叠层太阳电池、聚合物叠层太阳电池和染料敏化叠层太阳电池的光伏性能与研究进展,并提出了提高叠层太阳电池转换效率提高的某些技术对策.     

太阳能电池技术进展与趋势

本文主要介绍太阳能电池的最新技术进展和太阳能电池的应用,阐述了单晶硅太阳能电池、多晶硅太阳能电池、非晶硅太阳电池、化合物薄膜太阳能电池及染料敏化太阳能电池的技术进展和发展前景.     

染料敏化纳米薄膜太阳能电池的研究进展

染料敏化纳米薄膜太阳能电池（DSSC）是一种新型的太阳能电池。介绍了染料敏化纳米薄膜太阳能电池的结构和工作原理,并对其组成要素如多孔纳米膜、光敏化染料、电解质、对电极等的研究进展进行了简述。同时对染料敏化纳米薄膜太阳能电池的发展进行了展望。     

染料敏化二氧化钛纳米棒及其太阳电池的制备

以罗丹明-B为染料配制敏化剂,对二氧化钛(TiO2)纳米棒薄膜进行敏化处理后得到正电极,再加上用石墨制备的反电极,并滴加电解液,得到染料敏化纳米晶光电化学太阳能电池(NPC).实验结果表明,这种敏化方法在波长为470～750 nm的可见光范围内可以有效地提高太阳电池的吸光度和性能,电池的开路电压可达520mV.     

纳米二氧化钛薄膜在太阳电池中的应用

纳米TiO2具有许多优越的性能,但其禁带较宽,用染料对纳米TiO2进行敏化,拓宽其光谱响应范围,染料敏化的纳米TiO2应用于太阳电池上,具有廉价、无毒、稳定等优势。本文讨论了纳米TiO2薄膜的制备、染料敏化,及其在太阳电池中的应用。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that