功能聚酯成膜剂的合成及表征

以对苯二甲酸、间苯二甲酸、新戊二醇及1，6-己二醇为原料进行四元共缩聚反应，得到聚酯型树脂。利用1H核磁共振谱测定聚酯中各组分含量，测试了聚酯的耐磨性，并用合成的聚酯与聚碳酸酯共混制备光导器件，利用SP-428型静电纸分析仪测试光导器件的光电性能，得到性能符合有机光导器件要求的功能性聚酯成膜剂。     

三苯胺甲醛二苯腙的合成及其光电性能研究

合成了一种新型的三苯胺类载流子传输材料三苯胺甲醛二苯腙，通过一系列手段对该化合物性能进行了表征，并以此化合物为载流子空穴传输材料，Y－型酞菁氧钛为载流子产生材料制备了光导器件，测定了该光电器件的光电性能，显示出良好的光电性能（E1／2＝1.0lx.s)，可以替代常用的载流子传输材料二乙基苯甲醛二苯腙。     

酞菁类化合物在有机光电探测领域的研究进展

有机光电探测器因其探测波长的可调谐性、低成本制造、易与柔性/轻质器件兼容等优点，在图像显示、光学通信、生物传感等前沿科技领域备受关注。酞菁类化合物由于具有窄而可调的光学带隙、优异的物理化学稳定性、较高的光生载流子效率等优点在有机光电探测器核心功能层—光活性层中极具应用潜力，成为近年来被重点研究的一类光敏材料。本文介绍了酞菁类化合物的结构、性质和分类，简述了光电探测器的探测原理、器件基本结构和光电特性参数，重点回顾并分析了不同类型酞菁化合物在有机光电探测器光活性层的制备、探测波长的调节、器件功能的整体优化等方面的研究进展和影响因素，总结并展望了酞菁类化合物在有机光电探测领域未来的发展方向。     

一种双组分单层结构有机光导体的制备及性能考查

一种双组分单层结构有机光导体的制备及性能考查蒲嘉陵，焦文化（北京印刷学院技术系信息记录材料实验室，北京１０２６００）关键词单层结构，有机光导体，注入效率目前，有机光导体（ｏｒｇａｎｉｃｐｈｏｔｏｃｏｎｄｕｃｔｏｒ）大部分采用双层结构，即拥有电荷产生层...     

有机光导体空穴传输材料的性能表征

用多种空穴传输材料制备了光导器件,测定了他们的光电特性。从界面传输势垒角度分析了传输材料的氧化还原电位对光导体量子效率的影响,并通过实验进行了验证。用分子力学方法计算了一些空穴传输材料的偶极矩,对同一系列的传输材料,理论计算的偶极矩与氧化还原电位相关。     

染料敏化太阳能电池丝网印刷浆料中有机造孔剂对电池性能的影响

本文采用丝网印刷工艺制备染料敏化太阳能电池的氧化钛多孔薄膜,并将其组装成电池器件.主要研究了丝网印刷浆料中造孔剂-乙基纤维素和松油醇的含量对氧化钛薄膜光电性能的影响.光电性能测试和扫描电镜结果显示,当乙基纤维素N50和N10的比例为1:0、松油醇的含量为75%时,薄膜的结构和光电转换性能结果最优,单层光电转换效率从0.84%提升到1.23%.     

有机发光器件的光电性能研究

采用真空蒸发镀膜的方法制备了ITO/TPD（30nm）/Alq3（40nm）/LiF/Al结构的有机发光器件,讨论了Alq3的沉积速率和缓冲层LiF的厚度对器件光电性能的影响。结果表明：Alq3膜的沉积速率为0.2nm/s时所形成的器件光电性能最好,启亮电压为10V,最大发光效率为2.58cd/A;不同厚度LiF层的注入,使器件的光电性能有了不同程度的改善,LiF层厚度为2nm时效果最佳,启亮电压降至7V,亮度提高了1345cd/m2,最大发光效率达4.4cd/A。     

酞菁氧钛的简便合成

酞菁氧钛的简便合成李连海杨联明＊戴辉雄（北京印刷学院科研所，北京１０２６００）近年来的研究表明酞菁氧钛（ＴｉＯＰｃ）化合物是一种很好的有机光导材料，可广泛应用于有机光导器件的制备中，例如，它对红外激光有高感性，是一种极有前途的激光印字机的光导材料［１...     

酞菁类化合物在光导材料方面的应用

介绍了可作为有机光导材料的酚菁类化合物及其光电导性能。     

用Y-TiOPc/ETM/HTM三组分掺杂的单层结构有机光导体

功能分离型多层结构有机光导体的优良静电照相性能以及其在材料开发上的优点是静电照相技术飞速发展并得到巨大产业成功的一个重要因素．另一方面这种光导体需要进行多次精密涂布，制作工艺复杂、控制难度大，是有机光导体成本居高不下的一个重要原因．与此相比，单层结构...     

3－氰基－5－［2－（3－乙基－2－苯并噻唑啉基）亚乙基］4－苯基－2（5H）－呋喃酮蒸发膜的结构与光、电导性能的关系

３－氰基－５－［２－（３－乙基－２－苯并噻唑啉基）亚乙基］４－苯基－２（５Ｈ）－呋喃酮蒸发膜的结构与光、电导性能的关系常友明，邓晓东，李春秋（中国科学院化学研究所，北京１０００８０）（扬州师范学院，扬州２２５００２）关键词晶态，蒸发膜，结构，光电性能...     

Influence of oxygen ion enrichment on optical,mechanical, and electrical properties of LSCF perovskite nanocomposite

La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ (LSCF) is a mixed ionic electronic conductor with excellent surface catalytic activity for oxygen reduction. This work demonstrated that introduction of pure oxygen ion conductor to LSCF particles can significantly influence in-plane electronic conduction at the surface of LSCF-samarium-doped ceria (SDC) composite. The composite functional layer was prepared by mixing 50?wt% SDC particles with LSCF particles obtained from glycine–nitrate process. Homogeneous LSCF-SDC composite layer deposited by screen printing on an SDC substrate has been studied with and without LSCF current-collecting layer (CCL). The microstructural, optical, Raman, mechanical and electrical properties, and interfacial polarization resistance (R_p) of the prepared powders were evaluated. Results revealed that addition of oxygen ion conductor SDC exerted negligible effect on the phase structure and specific surface area but significantly influenced the band gap, oxygen vacancies, and electrical conductivity of LSCF. SDC addition significantly increased area specific resistance (ASR) of LSCF from 0.138?Ω?cm² to 0.481?Ω?cm² at 800?°C, thereby blocking the conduction path among LSCF particles. R_p value of LSCF-SDC composite can be improved by more than six times by enlarging the in-plane electronic conduction with thin CCL. Electrochemical measurement revealed that LSCF CCL reduced the R_p value, resulting in the lowest ASR of 0.087?Ω?cm² at 800?°C for the LSCF–SDC composite.     

Optimizing Na0.5Bi0.5TiO3 electrolyte fuel cell through constructing heterostructures

Heterostructure materials deliver special properties comparing with single phase materials. In this study, the performance of Na_0.5Bi_0.5TiO₃ (NBT) electrolyte fuel cell is proved to be optimized by constructing heterostructures with other materials. SOFC based on NBT single phase electrolyte exhibits poor stability and low power output. By mixing NBT with electronic conductor La_0.6Sr_0.4Co_0.2Fe_0.8O₃ (LSCF), improved performance is obtained and power output is observed to be dependent on the weight ratio of NBT to LSCF. It is interesting that the best performance is obtained in the cell with an optimized weight ratio of 30 wt% NBT - 70 wt% LSCF, in which the amount of electronic conductor exceeds that of ionic conductor. However, the stability of SOFC based on NBT-LSCF composite electrolyte still needs to be improved. In addition, the composition of sodium carbonate and lithium carbonate is added to the NBT-LSCF composite electrolyte for the purpose of creating amorphous shells around the NBT-LSCF particles, which is expected to protect the NBT-LSCF particles from reducing by hydrogen. Improved stability of the cell is then observed. This study provides an effective way to enhance the ionic conductivity and stability of electrolyte by constructing heterostructures.     

Homogeneous bilayer graphene film based flexible transparent conductor

Graphene is considered as a promising candidate to replace conventional transparent conductors due to its low opacity, high carrier mobility and flexible structure. Multi-layer graphene or stacked single layer graphenes have been investigated in the past but both have their drawbacks. The uniformity of multi-layer graphene is still questionable, and single layer graphene stacks require many transfer processes to achieve sufficiently low sheet resistance. In this work, bilayer graphene film grown with low pressure chemical vapor deposition was used as a transparent conductor for the first time. The technique was demonstrated to be highly efficient in fabricating a conductive and uniform transparent conductor compared to multi-layer or single layer graphene. Four transfers of bilayer graphene yielded a transparent conducting film with a sheet resistance of 180 Ω(□) at a transmittance of 83%. In addition, bilayer graphene films transferred onto the plastic substrate showed remarkable robustness against bending, with sheet resistance change less than 15% at 2.14% strain, a 20-fold improvement over commercial indium oxide films.     

氧化石墨烯/钒钛酸复合材料的制备及湿敏性能研究

通过Hummers法制备氧化石墨后进行超声分散,得到分散均匀的氧化石墨烯(GO)分散液,物理复合滴涂制备氧化石墨烯/钒钛酸薄膜并对其感湿性能进行了研究,并通过交流与直流方法对其感湿机理进行了深入探究。结果表明:氧化石墨烯/钒钛酸复合膜的湿敏性能优于氧化石墨烯和钒钛酸单层膜,该湿敏薄膜的湿滞为8.3%RH,灵敏度变化2个数量级,响应时间为8 s,还原时间为10 s,曲线线性度良好。材料在低湿阶段主要表现为电子导电,中高湿阶段为电子导电和离子导电同时存在,高湿阶段主要表现为离子导电。     

RAFT制备PDLC及其光电性能研究

聚合物分散液晶以其独特的光电响应机制赢得了众多研究人员的推崇,具有广视角、制作方便、便于制作大面积平板显示器的优点。实验合成了一种大分子RAFT试剂,将其引入聚合诱导分相法（PIPS）中,研究了其含量对PDLC电光性能的影响。结果表明：当RAFT大分子试剂含量由0％增加到15％的过程中,其关态下的透光率呈现先下降后上升的趋势。在4％以下,阈值电压及饱和电压均上升,对比度显著上升,并初步探讨了RAFT大分子试剂在聚合过程中的作用。     

红光响应眼镜蛇神经毒素PEG-PLGA纳米囊的制备与表征

以聚乙二醇-聚乳酸-聚乙醇酸嵌段共聚物(PEG-PLGA)为囊材,添加脱镁叶绿酸作为光敏剂,采用复乳法制备了光响应的眼镜蛇神经毒素纳米囊。以纳米囊的包封率、载药量和粒径为指标,采用单因素法对纳米囊的制备条件进行优化;以差示量热扫描分析其热流变性能,并以累积释药量研究其光控释行为。优化的PEGPLGA、眼镜蛇神经毒素及光敏剂脱镁叶绿酸质量配比为40∶12.5∶1,获得的纳米囊包封率为72.3%±3.6%,载药量为15.1%±1.3%,平均粒径为(862±23)nm,电位为(-46.5±3.8)m V,呈紧密球形,光敏剂分布在囊壳;在650 nm半导体激光照射30 min,体外释放明显加快。该纳米囊在不光照时具有增强药物稳定和缓释作用,而红光可促进药物释放,因而可实现光控靶向。     

The role of the disposition of the recycled polymer on the properties of films for greenhouses coverage

Multilayer films, by using postconsumer materials in the central layer, i.e., multilayer composition: virgin polyethylene/postconsumer polymer/virgin polyethylene, allows to get a film for greenhouses coverage with good mechanical properties and photo‐oxidation resistance, similar to that of the films made from virgin material and certainly better than the photo‐oxidation resistance of the film made melt blending the virgin polyethylene and the postconsumer polymer. Moreover, the disposition of the postconsumer polymer containing oxygenated groups only in the central layer determines a significant slowdown of the photo‐oxidation process of the multilayer film although faster than of the pristine vPE film. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011     

Preparation and characterization of graded SSC-SDC MIEC cathode for low-temperature solid oxide fuel cells

Mixed ionic/electronic conductor (MIEC) cathodes with graded composition and microstructures have been fabricated using improved spin-coating technique. Two components, Sm_0.2Ce_0.8O_1.9 (SDC) and Sm_0.5Sr_0.5CoO₃ (SSC), were utilized to prepare the graded MIEC cathode. Graded microstructures, i.e., a SSC-rich outer layer with large interconnected pores and a SDC-rich inner layer with small interconnected pores, were observed. The corresponding single cell had an increase of 13.3% in maximum power density at operating temperature of 600 °C. The present work suggests that the graded MIEC cathode has great potential in improving performance of solid oxide fuel cells operated at lower temperature.     

Evaluation of hydrogen separation performance of Ni-BaCe0.85Fe0.15O3-δ cermet membranes

Adding metal phase as the electronic transport channels in mixed protonic and electronic conductors is an effective method to enhance the conductivity and hydrogen permeability. Ceramic-metal (cermet) Ni-BaCe_0.85Fe_0.15O_3-δ (Ni-BCF8515) dual-phase membranes were successfully fabricated in this article, where BaCe_0.85Fe_0.15O_3-δ (BCF8515) served as the protonic conductor and Ni acted as the electronic conductor. The hydrogen permeability of Ni-BCF8515 dual-phase membrane was improved apparently, reaching 0.325?mL?min^?1?cm^?2 at 1000?°C, which is four times higher than that of the single phase BCF8515 membrane. Hydrogen permeability of Ni-BCF8515 dual-phase membrane under different hydration conditions was studied here. Moreover, Ni-BCF8515 dual-phase membrane showed stable hydrogen permeability under the reducing atmosphere for 50?h.