首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 62 毫秒
1.
作为一种低耗、高效的有机光伏器件,异质结型有机太阳能电池具有成本低、重量轻、柔韧性好等优点,已引起国内外的广泛关注.设计并合成性能优良、结构新颖的有机/聚合物电子给体和电子受体材料、提高光电转换率是太阳能电池研发的关键问题之一.本文简要介绍了异质结型有机太阳能电池的特点和工作原理,从聚对苯撑乙烯衍生物、苯并噻吩类以及苯并噻二唑类聚合物三个方面系统地综述了有机太阳能电池给体材料的研究进展.同时,依据有机太阳能电池受体材料的发展历程,较全面阐述了富勒烯衍生物、9,9-联亚芴基衍生物和苝二酰亚胺衍生物三类受体材料的结构特点及其在有机光伏器件中的应用与发展.最后,对异质结型有机太阳能电池发展趋势和应用前景做了展望.  相似文献   

2.
有机发光二极管(OLED)作为一种新型显示技术,因其在显示领域内的巨大应用前景而引起广泛关注。本文对OLED所使用的有机发光材料的专利保护状况进行了调查和分析,并据此提出了中国企业的应对策略。  相似文献   

3.
小分子有机电致发光材料研究进展   总被引:1,自引:0,他引:1  
 有机电致发光器件(OLED)具有效率高、亮度高、驱动电压低、响应速度快以及能实现大面积光电显示等优点,因其在平板显示和高效照明领域具有极大的应用前景而引起广泛关注。在OLED的制备及优化中,有机电致发光材料包括小分子和聚合物的选择至关重要,其中有机小分子发光材料具有确定的相对分子质量、化学修饰性强、选择范围广、易于提纯、荧光量子产率高以及可以产生红、绿、篮等各种颜色光等优点,一直受到国内外学者的广泛重视。本文综述了近年来国内外有机电致发光小分子发光材料的研究状况,对有机小分子电致发光材料进行分类和评述,并简要介绍了小分子OLED的应用前景和发展趋势。  相似文献   

4.
酞菁在分子材料器件方面的研究进展   总被引:4,自引:0,他引:4  
酞菁是一个有近百年历史的老化合物,但围绕酞菁的研究工作常盛不衰, 这在有机光电子功能材料的研究中是极为罕见的. 最根本的原因是酞菁本身具有优异的光电性能和在现代科学技术一些领域里广泛的应用前景. 文中综述了酞菁在分子材料器件, 包括有机发光二极管,场效应晶体管和气体传感器方面的研究进展,并对今后的前景进行了展望.  相似文献   

5.
酞菁铜是一种重要的有机半导体材料.因其优异的稳定性和良好的光电性能,酞菁铜被广泛地应用于有机场效应晶体管和有机太阳能电池等器件的研发.在综述酞菁铜的结构、性质的基础上,介绍了酞菁铜有机太阳能电池的研究进展和应用前景.  相似文献   

6.
大碎石柔性基层具有半刚性基层不曾有的优点和良好使用性能,能为解决我国沥青路面早期破坏问题提供一条新的思路,在我国具有广泛的应用前景。本文详细阐述了某高速公路大碎石柔性基层材料组成设计和施工,可供大碎石柔性基层设计与施工参考。  相似文献   

7.
有机光电材料研究进展与发展趋势   总被引:1,自引:0,他引:1  
本文综述了有机光电材料的研究进展,及其在有机发光二极管、有机场效应晶体管、有机太阳电池、有机传感器和有机存储器等领域的应用;介绍了清华大学在有机发光技术方面取得的进展.  相似文献   

8.
林争柱 《科技资讯》2014,(3):128-129
多金属含氧酸通过离子热合成的有机多孔材料的应用前景广泛,在材料化学的领域有着很高的研究价值,虽然目前对多金属氧酸盐基金属有机多孔材料化合物的合成及性质特征研究还处于初期阶段,但由于有机材料本身的环境效益以及多金属氧酸盐应用的广泛性,对于这项研究还是引起了很多人的重视。  相似文献   

9.
杨兵  吴胜兴  沈德建 《江西科学》2007,25(5):541-545
随着工程结构问题研究发展的深入和电子计算机的迅速发展,非线性有限元法在钢筋混凝土结构分析中得到了越来越广泛的应用。与线弹性有限元法相比,非线性有限元法具有"全过程仿真"的特点。本文对钢筋砼结构材料非线性本构关系及有限元法的特点、研究进展、存在问题做了分析和评价;重点探讨了非线性分析中所使用的材料本构方程、材料非线性有限元分析方程和有限元程序的编制。最后对上述研究进行了概括并提出了应用前景。  相似文献   

10.
针对真空蒸发有机发光材料时薄膜无法观察的问题,设计并制作了紫外光观察有机发光膜的装置,通过对有机粉料的蒸发和观察,取得了良好效果.其制作成本低,同时又提高了设备功效:在真空物理实验、教学和相关科研、生产中有着广泛的应用前景。  相似文献   

11.
1 Restults Tetrathiafulvalene (TTF) and its derivatives have been extensively investigated in the field of organic conductors and superconductors since 1973. Recently, their application in organic field-effect transistors (OFETs) has attracted considerable attention. So far, on the one hand, the fabrication techniques of the TTF-based FETs have been primarily limited to high vacuum evaporation, which is a relatively expensive process. On the other hand, low FET performances, such as the low on/off ratio...  相似文献   

12.
Among the many possible device configurations for organic memory devices,organic field-effect transistor (OFET) memory is an emerging technology with the potential to realize lightweight,low-cost,flexible charge storage media.In this feature article,the recent progress in the classes of OFET-based memory,including floating gate OFET memory,polymer electret OFET memory,ferroelectric OFET memory and several other kinds of OFET memories with unique configurations,are introduced.Finally,the prospects and problems of OFETs memory are discussed.  相似文献   

13.
Patterning organic single-crystal transistor arrays   总被引:1,自引:0,他引:1  
Briseno AL  Mannsfeld SC  Ling MM  Liu S  Tseng RJ  Reese C  Roberts ME  Yang Y  Wudl F  Bao Z 《Nature》2006,444(7121):913-917
Field-effect transistors made of organic single crystals are ideal for studying the charge transport characteristics of organic semiconductor materials. Their outstanding device performance, relative to that of transistors made of organic thin films, makes them also attractive candidates for electronic applications such as active matrix displays and sensor arrays. These applications require minimal cross-talk between neighbouring devices. In the case of thin film systems, simple patterning of the active semiconductor layer minimizes cross-talk. But when using organic single crystals, the only approach currently available for creating arrays of separate devices is manual selection and placing of individual crystals-a process prohibitive for producing devices at high density and with reasonable throughput. In contrast, inorganic crystals have been grown in extended arrays, and efficient and large-area fabrication of silicon crystalline islands with high mobilities for electronic applications has been reported. Here we describe a method for effectively fabricating large arrays of single crystals of a wide range of organic semiconductor materials directly onto transistor source-drain electrodes. We find that film domains of octadecyltriethoxysilane microcontact-printed onto either clean Si/SiO(2) surfaces or flexible plastic provide control over the nucleation of vapour-grown organic single crystals. This allows us to fabricate large arrays of high-performance organic single-crystal field-effect transistors with mobilities as high as 2.4 cm(2) V(-1) s(-1) and on/off ratios greater than 10(7), and devices on flexible substrates that retain their performance after significant bending. These results suggest that our fabrication approach constitutes a promising step that might ultimately allow us to utilize high-performance organic single-crystal field-effect transistors for large-area electronics applications.  相似文献   

14.
Nomura K  Ohta H  Takagi A  Kamiya T  Hirano M  Hosono H 《Nature》2004,432(7016):488-492
Transparent electronic devices formed on flexible substrates are expected to meet emerging technological demands where silicon-based electronics cannot provide a solution. Examples of active flexible applications include paper displays and wearable computers. So far, mainly flexible devices based on hydrogenated amorphous silicon (a-Si:H) and organic semiconductors have been investigated. However, the performance of these devices has been insufficient for use as transistors in practical computers and current-driven organic light-emitting diode displays. Fabricating high-performance devices is challenging, owing to a trade-off between processing temperature and device performance. Here, we propose to solve this problem by using a novel semiconducting material--namely, a transparent amorphous oxide semiconductor from the In-Ga-Zn-O system (a-IGZO)--for the active channel in transparent thin-film transistors (TTFTs). The a-IGZO is deposited on polyethylene terephthalate at room temperature and exhibits Hall effect mobilities exceeding 10 cm2 V(-1) s(-1), which is an order of magnitude larger than for hydrogenated amorphous silicon. TTFTs fabricated on polyethylene terephthalate sheets exhibit saturation mobilities of 6-9 cm2 V(-1) s(-1), and device characteristics are stable during repetitive bending of the TTFT sheet.  相似文献   

15.
利用以肽菁铜为半导体层的有机场效应晶体管构成一个 反向放大电路作为电光调制器的调制电路, 测试了其对光信号的调制效果. 实验结果表明, 有机场效应管在低频下可实现放大功能, 为电光晶体提供驱动和调制电压, 并实现了对激光信号的调制. 根据实验结果, 对该场效应管的性能进行了分析.  相似文献   

16.
Pentacene for p-channel organic field effect transistors(OTFTs) and perfluoropentacene for n-channel OTFTs have attracted strong attentions to be used as CMOS type organic semiconductor materials for flexible organic displays.n-channel OTFTs with different gate insulators of polyimide(PI) and SiO_2 and perfluoropentacene as a semiconductor layer were fabricated,and their instability of the transistor characteristics measured in air,vacuum and oxygen was investigated.The results show that both of the tran...  相似文献   

17.
Crone B  Dodabalapur A  Lin YY  Filas RW  Bao Z  LaDuca A  Sarpeshkar R  Katz HE  Li W 《Nature》2000,403(6769):521-523
Thin-film transistors based on molecular and polymeric organic materials have been proposed for a number of applications, such as displays and radio-frequency identification tags. The main factors motivating investigations of organic transistors are their lower cost and simpler packaging, relative to conventional inorganic electronics, and their compatibility with flexible substrates. In most digital circuitry, minimal power dissipation and stability of performance against transistor parameter variations are crucial. In silicon-based microelectronics, these are achieved through the use of complementary logic-which incorporates both p- and n-type transistors-and it is therefore reasonable to suppose that adoption of such an approach with organic semiconductors will similarly result in reduced power dissipation, improved noise margins and greater operational stability. Complementary inverters and ring oscillators have already been reported. Here we show that such an approach can realize much larger scales of integration (in the present case, up to 864 transistors per circuit) and operation speeds of approximately 1 kHz in clocked sequential complementary circuits.  相似文献   

18.
This article reviews the recent development of organic electron transport materials applied in the fields of organic photoconductors, light-emitting diodes, field-effect transistors and solar cells. Several technologies for charge carrier mobility measurement are summarized and compared, and a series of basic principles for designing high-performance organic electron transport materials are suggested as well.  相似文献   

19.
低电压并五苯薄膜场效应晶体管   总被引:1,自引:0,他引:1  
利用全蒸镀法, 以并五苯作为有源层, 聚甲基丙烯酸甲 酯(PMMA)作为绝缘层, 制备了全有机薄膜场效应晶体管(TFT). 测试结果表明, 器件具有较低的工作电压和较高的场效应迁移率. 对工作机理进行了探讨.  相似文献   

20.
通过制备了一个基于并五笨为有源层的顶栅底接触OTFT器件获取电流电压实验数据,并运用电流电压特性曲线理论拟合计算方法计算其阈值电压.研究发现,采用不同的拟合方法得到的阈值电压值有较大的差异.若选取转移特性曲线线性区距中心1/2范围内测试点进行最小二乘拟合计算出的阈值电压能减少采用其他拟合方法的固有不准确性,而且与其他方法得到阈值电压最接近.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号