scholarly journals Carbon Nanotube-Based Organic Thermoelectric Materials for Energy Harvesting

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1196 ◽  
Author(s):  
Xiaodong Wang ◽  
Hong Wang ◽  
Bing Liu
Keyword(s):  
High Performance ◽  
Organic Materials ◽  
Low Cost ◽  
The Past ◽  
Current Trends ◽  
P Type ◽  
Flexible Thermoelectric ◽  
Representative Samples ◽  
Theory And Experiments ◽  
Remarkable Progress

Carbon nanotubes (CNTs) have attracted much attention in developing high-performance, low-cost, flexible thermoelectric (TE) materials because of their great electrical and mechanical properties. Theory predicts that one-dimensional semiconductors have natural advantages in TE fields. During the past few decades, remarkable progress has been achieved in both theory and experiments. What is more important is that CNTs have shown desirable features for either n-type or p-type TE properties through specific strategies. Up to now, CNT‒polymer hybrids have held the record for TE performance in organic materials, which means they can potentially be used in high-performance TE applications and flexible electronic devices. In this review, we intend to focus on the intrinsic TE properties of both n-type and p-type CNTs and effective TE enhanced strategies. Furthermore, the current trends for developing CNT-based and CNT‒polymer-based high TE performance organic materials are discussed, followed by an overview of the relevant electronic structure‒TE property relationship. Finally, models for evaluating the TE properties are provided and a few representative samples of CNT‒polymer composites with high TE performance are highlighted.

High-performance n-type Ta4SiTe4/polyvinylidene fluoride (PVDF)/graphdiyne organic-inorganic flexible thermoelectric composites

2021 ◽  
Author(s):  
Sanyin Qu ◽  
Chen Ming ◽  
Pengfei Qiu ◽  
Kunqi Xu ◽  
Qing Xu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polyvinylidene Fluoride ◽  
High Performance ◽  
The Past ◽  
P Type ◽  
Flexible Thermoelectric

In the past decade, the development of high-performance p-type flexible organic-inorganic thermoelectric composites based on nanocarbons (e.g. carbon nanotubes and graphene) has achieved unprecedented success, but the progress in n-type...

Double doping approach for unusually stable and large n-type thermoelectric voltage from p-type multi-walled carbon nanotube mats

2020 ◽  
Vol 8 (26) ◽  
pp. 13095-13105 ◽  
Author(s):  
Qiujun Hu ◽  
Zhongxu Lu ◽  
Yizhuo Wang ◽  
Jing Wang ◽  
Hong Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Seebeck Coefficients ◽  
Thermoelectric Voltage ◽  
Large N ◽  
Multi Walled Carbon Nanotube ◽  
Multi Walled Carbon Nanotubes ◽  
P Type ◽  
Flexible Thermoelectric ◽  
Walled Carbon Nanotubes

Multi-walled carbon nanotubes (MWCNTs) have shown low n-type Seebeck coefficients (−10 μV K−1), which are not good enough to prepare high performance low-cost MWCNT based mechanically flexible thermoelectric devices.

Phototransistors Based on A Lightly Doped P3HT

MRS Advances ◽  
2020 ◽  
Vol 5 (37-38) ◽  
pp. 1975-1982
Author(s):  
Thomas H. Debesay ◽  
Sam-Shajing Sun
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Acid Methyl Ester ◽  
Extensive Study ◽  
The Past ◽  
Polymeric Semiconductor ◽  
Donor Acceptor ◽  
Low Toxicity ◽  
Improved Performance ◽  
P Type

AbstractOrganic/Polymeric Semiconductor (OSC) based devices have been under extensive study for the past three decades due to their intrinsic potential advantages such as lightweight, mechanical flexibility, biocompatibility, low toxicity, abundant material availability, low cost of processing, etc. A phototransistor incorporates the properties and functions of a transistor and photodetector. In this study, a phototransistor based on a donor/acceptor (D/A) pair (photo-doping) was studied and demonstrated. Unlike in organic photovoltaics (OPV) where 1:1 proportion by mass of the donor:acceptor is utilized to make up the active layer, that ratio appears to be too high for phototransistor applications. According to literature, this 1:1 concentration leads to low overall device performance, lack of I-V curve saturation (kink effect), and bipolar behavior. By altering fabrication techniques and doping concentrations, we were able to demonstrate a donor/acceptor based phototransistor with p-type characteristics with improved performance. In this work, we fabricated a high-performance OFET based on a very small amount of Phenyl-C71-butyric acid methyl ester (PCBM) doped into a Poly(3-hexylthiophene) (P3HT) host. With this work, a greater understanding behind the optimization of D/A based phototransistors is advanced.

Fused Ambipolar Aza-isoindigos with NIR absorption

2021 ◽  
Author(s):  
Liping Yao ◽  
Danlei Zhu ◽  
Hailiang Liao ◽  
Sheik Haseena ◽  
Mahesh kumar Ravva ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
High Performance ◽  
Low Cost ◽  
Light Weight ◽  
The Past ◽  
Pi Conjugated ◽  
Nir Absorption ◽  
Conjugated Organic Semiconductors

Due to their advantages of low-cost, light-weight, and mechanical flexibility, much attention has been focused on pi-conjugated organic semiconductors. In the past decade, although many materials with high performance has...

Flexible film-based thermoelectric generators

MRS Advances ◽  
2019 ◽  
Vol 4 (30) ◽  
pp. 1691-1697
Author(s):  
Shuping Lin ◽  
Wei Zeng ◽  
Lisha Zhang ◽  
Xiaoming Tao
Keyword(s):  
Seebeck Coefficient ◽  
Thermoelectric Generator ◽  
Low Cost ◽  
Thermoelectric Generators ◽  
Polystyrene Sulfonate ◽  
Paper Substrate ◽  
Thermoelectric Element ◽  
Flexible Film ◽  
P Type ◽  
Flexible Thermoelectric

ABSTRACT:The present work highlights the progress in the field of flexible thermoelectric generator (f-TEGs) fabricated by 3-D printing strategy on the typing paper substrate. In this study, printable thermoelectric paste was developed. The dimension of each planer thermoelectric element is 30mm*4mm with a thickness of 50 μm for P-type Bismuth Tellurium (Bi2Te3)-based/ poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) leg. A single thermoleg with this dimension can generate a voltage of 5.38 mV at a temperature difference of 70 K. The calculated Seebeck Coefficient of a single thermoleg is 76.86 μV/K. This work demonstrates that low-cost printing technology is promising for the fabrication of f-TEGs.

scholarly journals High Performance P-Type Perovskite Lagao3 Thin Film Field Effect Transistor Prepared by Solution-Processed

2022 ◽  
Vol 2152 (1) ◽  
pp. 012008
Author(s):  
Qian Chen
Keyword(s):  
Thin Film ◽  
High Performance ◽  
Low Cost ◽  
Thin Film Transistor ◽  
Solution Process ◽  
Hole Mobility ◽  
Oxide Semiconductor ◽  
Future Design ◽  
Different Temperatures ◽  
P Type

Abstract Metal oxide semiconductor (MOS) is essential to compose high-performance electronic devices, however, the investigation on p-type MOS is relatively rare compared with its n-type counterpart. In this work, LaGaO3 thin films with superior p-type conductivity have been prepared via a facile solution process. Moreover, we have implemented Al2O3 and SiO2 as the dielectric of the p-channel LaGaO3 thin film transistors (TFTs) annealed at different temperatures. Particularly, the LaGaO3/Al2O3 TFTs annealed at 700 °C exhibit an ultrahigh hole mobility of 12.4 cm2V-1s-1, Under the same conditions, LaGaO3/Al2O3 thin film transistor is two orders of magnitude higher than LaGaO3/SiO2 thin film transistor. The advanced p-type characteristics of the LaGaO3 thin film, along with its facile low-cost fabrication process can shed new light on future design of high-performance complementary MOS circuit with other optimized facile-integrated dielectrics.

scholarly journals Influence of globalization processes on the development of team sports

2018 ◽  
pp. 39-45
Author(s):  
Ruslana Sushko
Keyword(s):  
High Performance ◽  
Team Sports ◽  
Training System ◽  
Expert Assessment ◽  
Educational Training ◽  
Current Time ◽  
Progressive Development ◽  
The Past ◽  
Current Trends ◽  
Expert Assessments

Objective. To analyze the current trends in the development of team sports taking into account the influence of globalization processes in high performance sport. Methods. Analysis and generalization of scientific and methodological literature and data on the Internet; pedagogical observations; and expert assessments. Results. The features of the evolution of team sports in the context of globalization of high performance sport are reviewed and examined based on the influence of the following factors: migration of the athletes and their concentration in national and international leagues, and sports training centers; professionalization and commercialization of national and international official competitions; politicization of official international competitions; socialization of athletes and informatization of society. The current trends in the development of team sports are identified on the basis of the data of expert assessments taking into account the influence of globalization processes in high performance sport. Possible ways are outlined to address the topical issues of the development of team sports in Ukraine and to overcome the critical situation of non-compliance with the international level combined with the existing high potential and victorious traditions of the past taking into account the knowledge accumulated by experts and the need for an appropriate interpretation of the existing experience of foreign countries. Conclusion. Increasing trends in popularity of team sports are revealed and significant influence of processes of globalization are emphasized on the basis of its leading factors. The analysis of the characteristics of the sports globalization and the results of the expert assessment make it possible to conclude that modern professional sport has undergone drastic changes. Its further progressive development is possible only taking into account the recognition of the existing influence of global factors and requires the modified approaches to build a multi-year training system, the appropriate scientific justification, and legal support provided by the governmental bodies. This will allow to develop sound practical technologies for creating educational-training and competitive processes in order to overcome the existing imbalance in team sports between winning traditions of the past and disappointing results at the current time. Keywords: migration, concentration, professionalization, commercialization, politicization, socialization, informatization.

Understanding the sodium storage mechanisms of organic electrodes in sodium ion batteries: issues and solutions

2020 ◽  
Vol 13 (6) ◽  
pp. 1568-1592 ◽  
Author(s):  
Ranjusha Rajagopalan ◽  
Yougen Tang ◽  
Chuankun Jia ◽  
Xiaobo Ji ◽  
Haiyan Wang
Keyword(s):  
High Performance ◽  
Organic Materials ◽  
Low Cost ◽  
Sodium Ion ◽  
Environmentally Benign ◽  
Sodium Ion Batteries ◽  
Sodium Storage ◽  
Organic Electrodes

Organic materials offer a new opportunity to develop high-performance, low-cost, environmentally benign sodium ion batteries. This review provides insights into the different sodium storage mechanisms in various categories of organic materials.

scholarly journals FeCl3 as a low-cost and efficient p-type dopant of Spiro-OMeTAD for high performance perovskite solar cells

RSC Advances ◽  
2018 ◽  
Vol 8 (17) ◽  
pp. 9409-9413 ◽  
Author(s):  
Xiaoyu Gu ◽  
Yang Li ◽  
Yanfei Mu ◽  
Min Zhang ◽  
Tongbu Lu ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Low Cost ◽  
Perovskite Solar Cells ◽  
P Type

We have employed low-cost FeCl3 as efficient dopant of Spiro-OMeTAD for high performance perovskite solar cells.

scholarly journals Micellar Liquid Chromatography from Green Analysis Perspective

2015 ◽  
Vol 13 (1) ◽  
Author(s):  
Rania N. El-Shaheny ◽  
Mahmoud H. El-Maghrabey ◽  
Fathalla F. Belal
Keyword(s):  
Liquid Chromatography ◽  
High Performance ◽  
Low Cost ◽  
Pharmaceutical Formulations ◽  
Micellar Liquid Chromatography ◽  
High Reproducibility ◽  
The Past ◽  
Simultaneous Separation ◽  
Enhanced Luminescence

AbstractMicellar liquid chromatography (MLC) is a simple well-established branch of high-performance liquid chromatography. The applications of MLC for the determination of numerous compounds in pharmaceutical formulations, biological samples, food, and environmental samples have been growing very rapidly. MLC technique has several advantages over other techniques, such as simultaneous separation of charged and uncharged solutes, rapid gradient capability, direct on-column injection of physiological fluids, unique separation selectivity, high reproducibility, robustness, enhanced luminescence detection, low cost, and safety. This review is devoted to the evaluation of the agreement of MLC with the principles of green chemistry which recently represents a universal trend. Also, it provides an overview on the basics of MLC, in addition to a survey of MLC methods published in the past five years for the assay of various compounds in different matrices.

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