Texture and nanostructural engineering of conjugated conducting and semiconducting polymers DOI Creative Commons
Meysam Heydari Gharahcheshmeh,

Karen K. Gleason

Materials Today Advances, Journal Year: 2020, Volume and Issue: 8, P. 100086 - 100086

Published: July 2, 2020

Conducting polymers have attracted tremendous attention because of their unique characteristics, such as metal-like conductivity, ionic optical transparency, and mechanical flexibility. Texture nanostructural engineering conjugated conducting provide an outstanding pathway to facilitate adoption in a variety technological applications, including energy storage harvesting devices, flexible optoelectronic wearable electronic devices. Generally, obtaining high carrier mobility the presence density is challenging requires precise control texture nanostructure avoid charge localization. Preferential semicrystalline orientation, π–π stacking distances, crystallite size, intra- interchain couplings, intercrystallite connections, grain boundaries are key parameters that influence needs be controlled by synthesis parameters. This article provides comprehensive overview recent development polymers. In addition, this work describes fundamental transport mechanisms polymers; latest progress on characteristics transparent conductive electrodes based reported.

Language: Английский

Doping Approaches for Organic Semiconductors DOI
Alberto D. Scaccabarozzi, Aniruddha Basu, Filip Aniés

et al.

Chemical Reviews, Journal Year: 2021, Volume and Issue: 122(4), P. 4420 - 4492

Published: Nov. 18, 2021

Electronic doping in organic materials has remained an elusive concept for several decades. It drew considerable attention the early days quest with high electrical conductivity, paving way pioneering work on pristine semiconductors (OSCs) and their eventual use a plethora of applications. Despite this trend, however, recent strides field electronics have been made hand development dopants to point that are now ubiquitous. Here, we give overview all important advances area We first review relevant literature particular focus physical processes involved, discussing established mechanisms but also newly proposed theories. then continue comprehensive summary most widely studied date, placing emphasis chemical strategies toward synthesis molecules improved functionality. The processing routes doped films doping-processing-nanostructure relationships, discussed. conclude by highlighting how can enhance operating characteristics various devices.

Language: Английский

Citations

280
Space–charge limited current in nanodiodes: Ballistic, collisional, and dynamical effects DOI Creative Commons
Peng Zhang, Yee Sin Ang, Allen L. Garner

et al.

Journal of Applied Physics, Journal Year: 2021, Volume and Issue: 129(10)

Published: March 11, 2021

This Perspective reviews the fundamental physics of space–charge interactions that are important in various media: vacuum gap, air liquids, and solids including quantum materials. It outlines critical recent developments since a previous review paper on diode [Zhang et al. Appl. Phys. Rev. 4, 011304 (2017)] with particular emphasis theoretical aspects limited current (SCLC) model: at nano-scale, time-dependent, transient behaviors; higher-dimensional models; transitions between electron emission mechanisms material properties. While many studies focus steady-state SCLC, increasing importance fast-rise time electric pulses, high frequency microwave terahertz sources, ultrafast lasers has motivated investigations time-dependent SCLC. We particularly discrete particle effects, temporal phenomena, photoemission to AC beam loading. Due reduction physical size complicated geometries, we report multi-dimensional finite protrusive novel techniques for exotic fractional models. using SCLC models determining mobility organic materials, this shows transition model classical bulk two-dimensional (2D) Dirac Next, describe some selected applications nanodiodes, nanoscale vacuum-channel transistors, microplasma thermionic energy converters, multipactor. Finally, conclude by highlighting future directions modeling

Language: Английский

Citations

160
17% efficiency all-small-molecule organic solar cells enabled by nanoscale phase separation with a hierarchical branched structure DOI

Jinzhao Qin,

Zhihao Chen, Pengqing Bi

et al.

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(11), P. 5903 - 5910

Published: Jan. 1, 2021

By constructing a ternary cell with B1:BO-2Cl:BO-4Cl donor:acceptors combination, an outstanding power conversion efficiency (PCE) of 17.0% (certified to be 16.9%) has been realized for all-small-molecule organic solar cells (ASM-OSCs).

Language: Английский

Citations

154
An Electron Acceptor Analogue for Lowering Trap Density in Organic Solar Cells DOI
Yihang Zhang, Guilong Cai, Yawen Li

et al.

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(14)

Published: March 3, 2021

Typical organic semiconductor materials exhibit a high trap density of states, ranging from 1016 to 1018 cm-3 , which is one the important factors in limiting improvement power conversion efficiencies (PCEs) solar cells (OSCs). In order reduce within OSCs, new strategy design and synthesize an electron acceptor analogue, BTPR, developed, introduced into OSCs as third component enhance molecular packing with without blending polymer donor. Finally, as-cast ternary OSC devices employing BTPR show notable PCE 17.8%, low (1015 ) energy loss (0.217 eV) caused by non-radiative recombination. This among highest values for single-junction OSCs. The additives, 1015 comparable even lower than those several typical high-performance inorganic/hybrid counterparts, like amorphous silicon, metal oxides, 1014 halide perovskite thin film, makes it promising obtain up 20%.

Language: Английский

Citations

128
Hole utilization in solar hydrogen production DOI
Mohammad Ziaur Rahman, Tomas Edvinsson, Jorge Gascón

et al.

Nature Reviews Chemistry, Journal Year: 2022, Volume and Issue: 6(4), P. 243 - 258

Published: Feb. 2, 2022

Language: Английский

Citations

110
A review on g-C3N4incorporated with organics for enhanced photocatalytic water splitting DOI
Jinnan Liang, Xiaohong Yang,

Yan Wang

et al.

Journal of Materials Chemistry A, Journal Year: 2021, Volume and Issue: 9(22), P. 12898 - 12922

Published: Jan. 1, 2021

g-C3N4incorporated with organics for enhanced photocatalytic water splitting.

Language: Английский

Citations

107
Reducing Trap Density in Organic Solar Cells via Extending the Fused Ring Donor Unit of an A–D–A‐Type Nonfullerene Acceptor for Over 17% Efficiency DOI
Jixiang Zhou, Dan He, Yawen Li

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 35(3)

Published: Oct. 28, 2022

The high trap density (generally 1016 to 1018 cm-3 ) in thin films of organic semiconductors is the primary reason for inferior charge-carrier mobility and large nonradiative recombination energy loss (ΔEnr solar cells (OSCs), limiting improvement power conversion efficiencies (PCEs). In this study, OSCs efficiently reduced via extending donor core nonfullerene acceptors (NFAs) from a heptacyclic unit nonacyclic unit. TTPIC-4F with has stronger intramolecular intermolecular interactions, affording higher crystallinity relative its counterpart BTPIC-4F. Thus, D18:TTPIC-4F-based device achieves lower 4.02 × 1015 , comparable some typical high-performance inorganic/hybrid semiconductors, inhibited devices. Therefore, OSC exhibits an impressive PCE 17.1% low ΔEnr 0.208 eV, which best known value A-D-A-type NFAs. NFAs efficient method suppressing states PCEs.

Language: Английский

Citations

99
Polymer dielectrics for high-temperature energy storage: Constructing carrier traps DOI
Jun‐Wei Zha, Mengyu Xiao, Baoquan Wan

et al.

Progress in Materials Science, Journal Year: 2023, Volume and Issue: 140, P. 101208 - 101208

Published: Oct. 21, 2023

Language: Английский

Citations

98
Effects of energetic disorder in bulk heterojunction organic solar cells DOI
Jun Yuan, Chujun Zhang, Beibei Qiu

et al.

Energy & Environmental Science, Journal Year: 2022, Volume and Issue: 15(7), P. 2806 - 2818

Published: Jan. 1, 2022

The energetic disorder can be reduced by developing new photovoltaic materials, especially non-fullerene acceptors, and significant progress in the PCEs of OSCs has been made.

Language: Английский

Citations

97
High‐Efficiency and Mechanically Robust All‐Polymer Organic Photovoltaic Cells Enabled by Optimized Fibril Network Morphology DOI

Lijiao Ma,

Yong Cui, Jianqi Zhang

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 35(9)

Published: Dec. 20, 2022

All-polymer organic photovoltaic (OPV) cells possessing high performance and mechanical robustness are promising candidates for flexible wearable devices. However, developing photoactive materials with good properties so far remains challenging. In this work, a polymer donor PBDB-TF weight-average molecular weight (Mw ) is introduced to enable highly efficient all-polymer OPV featuring excellent reliability. By incorporating the high-Mw as third component into PBQx-TF:PY-IT blend, bulk heterojunction morphology finely tuned more compact π-π stacking distance, affording pathways charge transport well stress dissipation. Hence, based on ternary blend film demonstrate maximum power conversion efficiency (PCE) of 18.2% an outstanding fill factor 0.796. The cell delivers decent PCE 16.5% stability. These results present strategy address boost cells.

Language: Английский

Citations

93