Performance improvement of organic bulk heterojunction solar cells by using dihydroxybenzene as additive

We report the enhanced performance of organic solar cells(OSCs) based on regioregular poly(3-hexylthiophene)(P3HT) and methanofullerene [6,6]-phenyl C61-butyric acid methyl ester(PCBM) blend by using dihydroxybenzene as additive in the active layer.The effect of the content of the additives on electrical characteristics of the device is studied.The device with 0.2 wt% dihydroxybenzene additive achieves the best power conversion efficiency(PCE) of 4.58% with Jsc of 12.5 mA/cm2,Voc of 0.65 V,and FF of 66.6% under simulated solar illumination of AM 1.5G(100 mW/cm2),compared with the control device with PCE of 3.39%(35% improvement compared with the control device).The XRD measurement reveals that the addition of additives induces the crystallization of P3HT and establishes good inter-network to increase the contact area of donor and acceptor,and then helps charge to be effectively transferred to the electrode to reduce the chance of recombination.All evidences indicate that the dihydroxybenzene is likely to be a promising new type additive that can enhance the performance of organic bulk heterojunction solar cells.     

如何用PHOTOSHOP建立特殊的图像效果的图像

Ｐｈｏｔｏｓｈｏｐ是一个专业图像处理软件，功能繁多。我们可以充分利用Ｐｈｏｔｏｓｈｏｐ提供的强大滤镜功能，制作出各式各样特殊的图像效果。本文介绍利用Ｐｈｏｔｏｓｈｏｐ自身所带滤镜，经过几个简单的步骤制作出黄金饰品效果和透明的图片的方法。１制作黄金饰品效果 具体制作步骤如下： １）打开一个ＲＧＢ 模式的新文件，底色为白色，分辨率为２００Ｐｉｘｅｌｓ／ｃｍ。 ２）选用渐变工具，对图像进行渐变填充（选用深蓝色或深紫色以增强效果）。 ３）选用矩形选取工具，在图像背景层上做一正方形选区，对选区做４个像素的羽化…     

Reusing of transmitted light by localized surface plasmon enhancing of Ag nanoparticles in organic solar cells

Silver nanoparticles(Ag NPs)are synthesized with chemical method,which are introduced into the traditional organic photovoltaic(OPV)structure.The experimental results show that both the optical and photoelectric properties are en-hanced because of localized surface plasmon(LSP)effects of Ag NPs.The advantage of adding Ag NPs behind active layer in incident direction is discussed.We believe this route can avoid absorption shadow and enhance the reusing of transmitted light of active layer.The average short-circuit current(J SC)of the optimum device can be raised from 9.23mA/cm2 to 10.84mA/cm2,and the energy converting efficiency(PCE)can be raised from 3.22% to 3.85%.     

An air-stable inverted photovoltaic device using ZnO as the electron selective layer and MoO3 as the blocking layer

An air-stable photovoltaic device based on znic oxide nanoparticles (ZNP) in an inverted structure of indium tin oxide (ITO)/ZnO/poly (3-hexylthiophene) (P3HT): [6,6]-phenyl C61-butyric acid methyl ester (PCBM)/MoO3/Ag is studied. We find that the optimum thickness of the MoO3 layer is 2 nm. When the MoO3 blocking layer is introduced, the fill factor of the devices is increased from 29% to 40%, the power conversion efficiency is directly promoted from 0.35% to 1.27%.The stability under ambient conditions of this inverted structure device much is better due to the improved stability at the polymer/Ag interface. The enhancement is attributed to the high carriers mobility and suitable band gap of MoO3 layer.     

低温处理的TiO2纳米颗粒薄膜作为缓冲层的有机光伏电池

通过溶胶凝胶法(sol-gel)合成了TiO₂纳米颗 粒(NPs),制备了结构为 ITO/PEDOT:PSS/P3HT:PCBM/TiO₂/Al的有机太阳能电池(OSC)器件。通过优化阴极缓冲 层TiO₂NPs的 热处理温度,考察了温度以及溶剂对TiO₂NPs薄膜的光学性能、形貌结构和电学 性能的影响,并研究了其对OSC性能的影响及作用机理。实验发现,TiO₂NPs处理温度 为80℃时,器件 的效率达到了2.52%。相对于参比器件,器件的光电转换效率(PCE) 、填充因子(FF)分别提高了60%、64.7%。     

双发光层白色FOLED的制备及其性能研究

采用以含ITO导电层的柔性透明PET基片作为衬底,荧光材料TBPe、Rubrene分别掺杂在主体材料CBP和Balq中作为蓝色发光层和橙红色发光层,制备了双发光层白色柔性有机电致发光器件(FOLED)。通过适当调节发光层的掺杂比例和厚度,得到了发光性能理想的白光器件。测量表明,制备的器件色稳定性很好,色度随外加驱动电压在很大范围内变化很小,且其色坐标均非常接近于白色等能点。当电流密度为50mA/cm2时,器件最高外量子效率达到0.9%。通过抗弯折性能的测试证明,可以基本实现柔性显示的目的。     

热熔涂碳复写油墨的组成与印刷适性

热熔涂碳(或局部涂碳)复写纸是在纸张背面(或需要复写的局部)涂布或印刷油墨,依靠复写的压力,使上页纸背面的油墨附着于下页纸面,从而达到多联复写的目的,是传统复写纸的换代产品.由于采用局部涂碳的方式,可节省原材料,加之采用了热熔涂碳技术而免去了干燥装置,所以具有生产制造工艺简单、价格低廉、使用清洁方便、能满足式多份的要求等诸多优点,尤其是在防止涂改和永久保存方面,涂碳复写纸具有强劲的竞争力.     

西佛碱金属配合物的合成及表征

以水杨醛与邻苯二胺、苯胺为原料,合成了水杨醛缩邻苯二胺Ａ,水杨醛缩苯胺Ｂ。利用这两个配体与四氯化钛、三氧化铁络合,合成了４个新型的西佛碱金属配合物。ＤＳＣ研究表明,配合物中无配位的溶剂。配合物的＾１ＨＮＭＲ中可以看出酚羟基信号。红外光谱分析表明,配体Ａ、Ｂ存在分子内、分子间氢键,与金属氯化物络合后,分子间、分子内氢键打开,金属原子与配体中的亚胺氮原子及羟基配位形成螯合物。配体Ａ形成的络合物中的氮与     

柔性显示器件的衬底材料及封装技术

有机电致发光显示器件(OLED)被认为是最理想、最具发展前景的下一代显示技术之一.在柔性衬底上制备的有机电致发光器件拓宽了OLED的使用范围,是其重要发展方向.本文综述了柔性显示器件的衬底材料及封装技术的发展概况,比较了玻璃、聚合物、金属3种衬底材料的优缺点,并简单介绍了以这3种材料为衬底的柔性显示器件的封装技术.     

等离子体化学中的诊断技术

从探针、光谱分析、质谱、能谱等方面综述了等离子体化学中的诊断技术，并对等离子体诊断的最新进展作了简要的介绍。