Si/PEDOT:PSS杂化太阳能电池的研究进展

硅有机/无机杂化太阳能电池结合了硅材料载流子迁移率高的优势,以及有机物的材料易合成、光电特性可调的特点,具有制备工艺简单、成本低以及柔性等适合未来应用发展的潜力特征。在介绍硅基杂化太阳能电池的基本结构和工作原理的基础上,从硅基材料的优化、有机导电聚合物PEDOT∶PSS改性、硅与PEDOT∶PSS界面修饰和结构优化,以及杂化太阳能电池的稳定性4个方面概况了近期的研究进展,重点针对Si/PEDOT∶PSS杂化太阳能电池结构优化及性能改进方面的最新研究热点,分析了当前硅基杂化电池发展的问题,指出了Si/PEDOT∶PSS杂化太阳能电池的发展方向。     

静电纺丝制备Te纳米线/PEDOT:PSS热电薄膜及性能研究

近年来,用于健康、 环境监测的可穿戴传感器和电子设备发展迅速,由此对可持续能源收集与供应技术提出了新的要求.有机柔性热电材料和装置能够将热量直接转换成电能,且凭借其固有的柔韧性、 低毒性和简单易得等优点,受到越来越多的关注.静电纺丝技术是制备纳米纤维膜的常用方法,具有简单、 通用、 易于控制等优点,在柔性电子器件领域具...     

硅/有机杂化太阳电池中PEDOT:PSS改性的研究进展

近年来,硅/PEDO T:PSS杂化太阳电池因其材料成本低廉、制备工艺简单和效率极限高等优点引起了人们的关注和研究.作为空穴选择接触,PEDO T:PSS具备与硅匹配的能带结构,但其电导率低、功函数不理想和成膜质量差等缺点将限制硅/PEDO T:PSS杂化太阳电池的性能.共溶剂、表面活性剂和下转换效应材料等物质的掺杂或后处理可以改善PEDO T:PSS的电导率、成膜质量和光子利用能力等性质.通过上述改性来克服PEDO T:PSS的缺点是提升此类太阳电池性能的一种有效途径.本文介绍了PEDO T:PSS的性质和硅/PEDO T:PSS杂化太阳电池的工作原理,并详细阐述了PEDO T:PSS改性的原理及研究进展,总结了亟待解决的问题并展望了未来的发展趋势.     

PEDOT:PSS/聚(丙烯酰胺-甲基丙烯酸)导电水凝胶的制备与性能

通过原位自由基溶液聚合法制备了聚(3,4-乙撑二氧噻吩):聚苯乙烯磺酸盐(PEDOT:PSS)/聚(丙烯酰胺-甲基丙烯酸)(P(AAM-MAA))导电水凝胶.采用FTIR、Raman、TGA和SEM分别表征了PEDOT:PSS/P(AAM-MAA)的组成与形貌,测定了PEDOT:PSS/P(AAM-MAA)的透光率、电...     

Thermoelectric measurements of PEDOT:PSS/expanded graphite composites

Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)/expanded graphite films were cast as thin films with different expanded graphite contents at room temperature. The thermoelectric properties of the composites were investigated as a function of the graphite concentration. The electrical conductivity and Seebeck coefficient were measured as a function of the graphite concentration. The electrical conductivity and power factor show similar trends with a sharp increase at around 55 wt% of expanded graphite content. The Seebeck coefficient does not show a significant dependence with the graphite content. SEM and TEM images indicate a nearly homogenous distribution of the filler in the matrix. The initial thermal stability is not modified with the filler.     

Composite supercapacitor electrodes made of activated carbon/PEDOT:PSS and activated carbon/doped PEDOT

In this paper, we report on the high electrical storage capacity of composite electrodes made from nanoscale activated carbon combined with either poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) or PEDOT doped with multiple dopants such as ammonium persulfate (APS) and dimethyl sulfoxide (DMSO). The composites were fabricated by electropolymerization of the conducting polymers (PEDOT:PSS, doped PEDOT) onto the nanoscale activated carbon backbone, wherein the nanoscale activated carbon was produced by ball-milling followed by chemical and thermal treatments. Activated carbon/PEDOT:PSS yielded capacitance values of 640 F g^?1 and 26 mF cm^?2, while activated carbon/doped PEDOT yielded capacitances of 1183 F g^?1 and 42 mF cm^?2 at 10 mV s^?1. This is more than five times the storage capacity previously reported for activated carbon–PEDOT composites. Further, use of multiple dopants in PEDOT improved the storage performance of the composite electrode well over that of PEDOT:PSS. The composite electrodes were characterized for their electrochemical behaviour, structural and morphological details and electronic conductivity and showed promise as high-performance energy storage systems.     

Nonvolatile write-once-read-many-times memory device with functionalized-nanoshells/PEDOT:PSS nanocomposites

We have investigated the memory effect of the nanocomposites of functionalized carbon nanoshells (f-CNSs) mixed with poly(3,4-ethylenedioxythiophene) doped with polystyrenesulfonate (PEDOT:PSS) polymer. The f-CNSs were synthesized by the spray pyrolysis method and functionalized in situ with functional groups (OH, COOH, C-H, C-OH) with the aim of improving their compatibility in the aqueous dispersion of PEDOT:PSS. The current-voltage (I-V) sweep curves at room temperature for the Al/f-CNSs, for certain concentrations range, embedded in a PEDOT:PSS layer/Al devices showed electrical bistability for write-once-read-many-times (WORM) memory devices. The memory effect observed in the devices can be explained due to the existence of trapped charges in the f-CNSs/PEDOT:PSS layer. The carrier transport mechanisms for the memory devices is studied and discussed.     

Thermal Response of Transparent Silver Nanowire/PEDOT:PSS Film Heaters

Thermal response behavior of transparent silver nanowire/PEDOT:PSS film heaters are intensively studied for manipulating heating temperature, response time, and power consumption. Influences of substrate heat capacity, heat transfer coefficient between air and heater, sheet resistance and dimension of Ag nanowire film, on the thermal response are investigated from thermodynamic analysis. Suggestion is given for practical applications that if other parameters are fixed, Ag nanowire coverage can be utilized as an effective parameter to adjust the thermal response. The heat transfer coefficient plays opposite roles on thermal response speed and achievable steady temperature. A value of ≈32 W m^?2 K^?1 is obtained from transient process analysis after correcting it by considering heater resistance variation during heating tests. Guidance of designing heaters with a given response time is provided by forming Ag nanowire film with a suitable sheet resistance on substrate of appropriate material and a certain thickness. Thermal response tests of designed Ag heaters are performed to show higher heating temperature, shorter response time, and lower power consumption (179 °C cm² W^?1) than ITO/FTO heaters, as well as homogeneous temperature distribution and stability for repeated use. Potential applications of the Ag heaters in window defogging, sensing and thermochromism are manifested.     

DMSO-treated flexible PEDOT:PSS/PANi fiber electrode for high performance supercapacitors

Wearable energy storage device nowadays gains great interest due to sharply increased demand for highly flexible, stretchable and embedded electronics, where fiber-based supercapacitor (FSC) is a competitive counterpart. The poly(3,4-ethylenedioxythiophene):poly(styrenesulfonic acid)/ polyaniline (PEDOT:PSS/PANi) fiber has been prepared via an accessible technique of one-dimensional (1D) self-assembly. Nevertheless, PSS as the main cross-linking matrix may lead to more hopping sites for charge carriers, lessening the continuous electrically conductive path. Herein, PEDOT:PSS/PANi fiber was treated with dimethyl sulfoxide (DMSO) to remove the insulative PSS chains. Coupling high electroactivity of PANi and high conductivity of PEDOT, the optimized DMSO-PEDOT:PSS/PANi fiber displays enhanced electrochemical properties with a high specific capacitance (C_s) of 367.7 F g^?1 at 0.5 A g^?1 and good rate capability. Moreover, a symmetric FSC based on the DMSO-P₄P₆ fiber exhibits a high energy density of 42.4 Wh kg^?1 at a power density of 302.3 W kg^?1.

Graphical abstract

PEDOT: PSS/PANi fibers are prepared via a simple technique of one-dimensional (1D) self-assembly, and the PEDOT: PSS/PANi fiber exhibits superior flexibility, electrical conductivity, and electrochemical properties.

     

High-performance Ag nanowires/PEDOT:PSS composite electrodes for PVDF-HFP piezoelectric nanogenerators

Journal of Materials Science: Materials in Electronics - The highly transparent and conductive poly(3,4-ethylenedioxythiophene):poly (styrenesulfonate) (PEDOT:PSS)/Ag nanowires (NWs) composite...