Effect of spin traps on charge transport in low-bandgap copolymer:fullerene composites

2017 ◽  
Vol 111 ◽  
pp. 153-159 ◽  
Author(s):  
Victor I. Krinichnyi ◽  
Evgeniya I. Yudanova ◽  
Victor R. Bogatyrenko
Keyword(s):  
Charge Transport ◽  
Spin Traps ◽  
Low Bandgap

Charge Transport and Recombination in Low-Bandgap Bulk Heterojunction Solar Cell using Bis-adduct Fullerene

2011 ◽  
Vol 1 (6) ◽  
pp. 1162-1168 ◽  
Author(s):  
Hamed Azimi ◽  
Alessia Senes ◽  
Markus C. Scharber ◽  
Kurt Hingerl ◽  
Christoph J. Brabec
Keyword(s):  
Solar Cell ◽  
Charge Transport ◽  
Bulk Heterojunction ◽  
Heterojunction Solar Cell ◽  
Low Bandgap ◽  
Bulk Heterojunction Solar Cell

Effect of spin localization on charge transport in low-bandgap bilayered ordered nanocomposites

2018 ◽  
Vol 174 ◽  
pp. 333-341 ◽  
Author(s):  
V.I. Krinichnyi ◽  
E.I. Yudanova ◽  
V.R. Bogatyrenko
Keyword(s):  
Charge Transport ◽  
Low Bandgap

scholarly journals Highly efficient exciton harvesting and charge transport in ternary blend solar cells based on wide- and low-bandgap polymers

2015 ◽  
Vol 17 (40) ◽  
pp. 27217-27224 ◽  
Author(s):  
Yanbin Wang ◽  
Hideo Ohkita ◽  
Hiroaki Benten ◽  
Shinzaburo Ito
Keyword(s):  
Solar Cells ◽  
Charge Transport ◽  
Wide Bandgap ◽  
Ternary Blend ◽  
Low Bandgap ◽  
Highly Efficient

Ternary blend solar cells using a crystalline wide-bandgap P3HT and a low-bandgap PSBTBT exhibit good exciton harvesting and charge transport.

scholarly journals Charge transport in amorphous low bandgap conjugated polymer/fullerene films

2012 ◽  
Vol 111 (4) ◽  
pp. 043710 ◽  
Author(s):  
Jung Yong Kim ◽  
Hyunduck Cho ◽  
Seunguk Noh ◽  
Yoonkyoo Lee ◽  
Young Min Nam ◽  
...  
Keyword(s):  
Charge Transport ◽  
Conjugated Polymer ◽  
Low Bandgap

scholarly journals An ultra-low bandgap diketopyrrolopyrrole (DPP)-based polymer with balanced ambipolar charge transport for organic field-effect transistors

RSC Advances ◽  
2016 ◽  
Vol 6 (82) ◽  
pp. 78720-78726 ◽  
Author(s):  
Tao Jiang ◽  
Zhongyuan Xue ◽  
Michael Ford ◽  
Jessica Shaw ◽  
Xudong Cao ◽  
...  
Keyword(s):  
Charge Transport ◽  
Field Effect ◽  
Molecular Design ◽  
Field Effect Transistors ◽  
Organic Field Effect Transistors ◽  
Solution Processed ◽  
Low Bandgap

Molecular design on new A1–A2 type polymer pDTDPP–TTF exhibiting ultra-low bandgap and balanced ambipolar charge transport was conducted for solution-processed OFETs.

Magnetic Ordering via Itinerant Ferromagnetism in a Metal-Organic Framework

2020 ◽  
Author(s):  
Jesse Park ◽  
Brianna Collins ◽  
Lucy Darago ◽  
Tomce Runcevski ◽  
Michael Aubrey ◽  
...  
Keyword(s):  
Charge Transport ◽  
Magnetic Order ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Magnetic Ordering ◽  
Double Exchange ◽  
Itinerant Ferromagnetism ◽  
Organic Solids ◽  
Metal Organic ◽  
Organic Framework

<b>Materials that combine magnetic order with other desirable physical attributes offer to revolutionize our energy landscape. Indeed, such materials could find transformative applications in spintronics, quantum sensing, low-density magnets, and gas separations. As a result, efforts to design multifunctional magnetic materials have recently moved beyond traditional solid-state materials to metal–organic solids. Among these, metal–organic frameworks in particular bear structures that offer intrinsic porosity, vast chemical and structural programmability, and tunability of electronic properties. Nevertheless, magnetic order within metal–organic frameworks has generally been limited to low temperatures, owing largely to challenges in creating strong magnetic exchange in extended metal–organic solids. Here, we employ the phenomenon of itinerant ferromagnetism to realize magnetic ordering at <i>T</i><sub>C</sub> = 225 K in a mixed-valence chromium(II/III) triazolate compound, representing the highest ferromagnetic ordering temperature yet observed in a metal–organic framework. The itinerant ferromagnetism is shown to proceed via a double-exchange mechanism, the first such observation in any metal–organic material. Critically, this mechanism results in variable-temperature conductivity with barrierless charge transport below <i>T</i><sub>C</sub> and a large negative magnetoresistance of 23% at 5 K. These observations suggest applications for double-exchange-based coordination solids in the emergent fields of magnetoelectrics and spintronics. Taken together, the insights gleaned from these results are expected to provide a blueprint for the design and synthesis of porous materials with synergistic high-temperature magnetic and charge transport properties. </b>

Design and Synthesis of Two-Dimensional Covalent Organic Frameworks with Four-Arm Cores: Prediction of Remarkable Ambipolar Charge-Transport Properties

2019 ◽  
Author(s):  
Simil Thomas ◽  
Hong Li ◽  
Raghunath R. Dasari ◽  
Austin Evans ◽  
William Dichtel ◽  
...  
Keyword(s):  
Charge Transport ◽  
Organic Semiconductors ◽  
Density Functional ◽  
Polymer Networks ◽  
Two Dimensional ◽  
Covalent Organic Frameworks ◽  
X Ray Diffraction ◽  
Zinc Porphyrin ◽  
Design And Synthesis ◽  
Predicted Values

<p>We have considered three two-dimensional (2D) π-conjugated polymer networks (i.e., covalent organic frameworks, COFs) materials based on pyrene, porphyrin, and zinc-porphyrin cores connected <i>via</i> diacetylenic linkers. Their electronic structures, investigated at the density functional theory global-hybrid level, are indicative of valence and conduction bands that have large widths, ranging between 1 and 2 eV. Using a molecular approach to derive the electronic couplings between adjacent core units and the electron-vibration couplings, the three π-conjugated 2D COFs are predicted to have ambipolar charge-transport characteristics with electron and hole mobilities in the range of 65-95 cm<sup>2</sup>V<sup>-1</sup>s<sup>-1</sup>. Such predicted values rank these 2D COFs among the highest-mobility organic semiconductors. In addition, we have synthesized the zinc-porphyrin based 2D COF and carried out structural characterization via powder X-ray diffraction and surface area analysis, which demonstrates the feasability of these electroactive networks.</p>

Sign in / Sign up

Export Citation Format

Share Document