scholarly journals Novel Strategy for Organic Cocrystals of n-Type and p-Type Organic Semiconductors with Advanced Optoelectronic Properties

ACS Omega ◽  
2020 ◽  
Vol 5 (21) ◽  
pp. 12067-12072 ◽  
Author(s):  
Taoyu Zou ◽  
Jiawei Chang ◽  
Qiuyuan Chen ◽  
Zhifeng Nie ◽  
Liangfei Duan ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Optoelectronic Properties ◽  
Novel Strategy ◽  
P Type

scholarly journals 2,2'-(Arylenedivinylene)bis-8-hydroxyquinolines exhibiting aromatic π-π stacking interactions as solution-processable p-type organic semiconductors for high-performance organic field effect transistors

2021 ◽  
Author(s):  
Suman Yadav ◽  
Shivani Sharma ◽  
Satinder K Sharma ◽  
Chullikkattil P. Pradeep
Keyword(s):  
Organic Semiconductors ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistor ◽  
Field Effect Transistors ◽  
Organic Field Effect Transistors ◽  
Organic Thin Film ◽  
Effect Transistor ◽  
Solution Processable ◽  
P Type

Solution-processable organic semiconductors capable of functioning at low operating voltages (~5 V) are in demand for organic field-effect transistor (OFET) applications. Exploration of new classes of compounds as organic thin-film...

Characterization and optoelectronic properties of p-type N-doped CuAlO2 films

2007 ◽  
Vol 90 (19) ◽  
pp. 191117 ◽  
Author(s):  
Ruei-Sung Yu ◽  
Shih-Chang Liang ◽  
Chih-Jung Lu ◽  
Du-Cheng Tasi ◽  
Fuh-Sheng Shieu
Keyword(s):  
Optoelectronic Properties ◽  
P Type

Donor-acceptor copolymers and sol-gel processable zinc oxide for thin film transistors and hybrid photodetectors

2019 ◽  
Author(s):  
◽  
Alec Pickett
Keyword(s):  
Organic Semiconductors ◽  
Field Effect Transistors ◽  
Sol Gel ◽  
Phenyl Group ◽  
Grazing Incidence ◽  
Second Phase ◽  
Commercial Development ◽  
University Of Missouri ◽  
Pi Conjugated ◽  
P Type

[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Organic semiconductors have been gaining attention both in research and commercial development for electronic devices due to their low manufacturing and processing costs. Copolymers based on diketopyrrolopyrrole (DPP) cores have attracted a lot of attention due to their high p-type as well as n-type carrier mobilities in organic field-effect transistors (FETs) and high power conversion efficiencies in solar cell structures. Hybrid organic-inorganic photodiode interfaces have also gained significant interest due to the realization of intrinsic p-n junctions as well as their unique physical properties such as mechanical flexibility and high photosensitivity. ZnO is an intrinsic n-type semiconductor which is non-toxic and sol-gel processable, creating avenues for film patterning and fully solution processed devices. In this work, we report the structural and charge transport properties of n-dialkyl side-chain substituted thiophene DPP end-capped with a phenyl group (Ph-TDPP-Ph) monomer in FETs which were fabricated by vacuum deposition and solvent casting. From grazing incidence X-ray diffraction (GIXRD), Ph-TDPP-Ph reveals polymorphic structure with [pi]-conjugated stacking direction oriented in-plane. The unit cell comprises either one monomer for one phase (TR1), or two monomers for the second phase (TR2). The TR2 phase thus signals a shift from a coplanar to herringbone orientation of the molecules. The device performance is sensitive to the ratio of the two triclinic phases found in the film. Some of the best FET performances with p-type carrier mobilities of 0.1 cm2/Vs and on/off ratio of 10[superscript 6] are for films that comprise mainly the TR1 phase.

scholarly journals The Optoelectronic Properties of p-Type Cr-Deficient Cu[Cr0.95−xMg0.05]O2 Films Deposited by Reactive Magnetron Sputtering

Materials ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2376 ◽  
Author(s):  
Song-Sheng Lin ◽  
Qian Shi ◽  
Ming-Jiang Dai ◽  
Kun-Lun Wang ◽  
Sheng-Chi Chen ◽  
...  
Keyword(s):  
Magnetron Sputtering ◽  
Carrier Mobility ◽  
Figure Of Merit ◽  
Incident Light ◽  
Transparent Conductive Oxide ◽  
Optoelectronic Properties ◽  
Reactive Magnetron Sputtering ◽  
Reactive Magnetron ◽  
Mg Doping ◽  
P Type

CuCrO2 is one of the most promising p-type transparent conductive oxide (TCO) materials. Its electrical properties can be considerably improved by Mg doping. In this work, Cr-deficient CuCrO2 thin films were deposited by reactive magnetron sputtering based on 5 at.% Mg doping. The influence of Cr deficiency on the film’s optoelectronic properties was investigated. As the film’s composition varied, CuO impurity phases appeared in the film. The mixed valency of Cu+/Cu2+ led to an enhancement of the hybridization between the Cu3d and O2p orbitals, which further reduced the localization of the holes by oxygen. As a result, the carrier concentration significantly improved. However, since the impurity phase of CuO introduced more grain boundaries in Cu[Cr0.95−xMg0.05]O2, impeding the transport of the carrier and incident light in the film, the carrier mobility and the film’s transmittance reduced accordingly. In this work, the optimal optoelectronic performance is realized where the film’s composition is Cu[Cr0.78Mg0.05]O2. Its Haacke’s figure of merit is about 1.23 × 10−7 Ω−1.

New tetrathiafulvalene fused-naphthalene diimides for solution-processible and air-stable p-type and ambipolar organic semiconductors

2012 ◽  
Vol 3 (8) ◽  
pp. 2530 ◽  
Author(s):  
Luxi Tan ◽  
Yunlong Guo ◽  
Yang Yang ◽  
Guanxin Zhang ◽  
Deqing Zhang ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
P Type ◽  
Naphthalene Diimides

Theoretical Investigation of Structural Effects on the Charge Transfer Properties in Modified Phthalocyanines

MRS Advances ◽  
2015 ◽  
Vol 1 (7) ◽  
pp. 453-458 ◽  
Author(s):  
Patrick J. Dwyer ◽  
Stephen P. Kelty
Keyword(s):  
Organic Semiconductors ◽  
Electron Affinity ◽  
Density Functional ◽  
Reorganization Energy ◽  
High Electron ◽  
Optoelectronic Materials ◽  
Research Attention ◽  
Efficient Charge ◽  
Reorganization Energies ◽  
P Type

ABSTRACTFor efficient charge separation and charge transport in optoelectronic materials, small internal reorganization energies are desired. While many p-type organic semiconductors have been reported with low internal reorganization energies, few n-type materials with low reorganization energy are known. Metal phthalocyanines have long received extensive research attention in the field of organic device electronics due to their highly tunable electronic properties through modification of the molecular periphery. In this study, density functional theory (DFT) calculations are performed on a series of zinc-phthalocyanines (ZnPc) with various degrees of peripheral per-fluoroalkyl (-C3F7) modification. Introduction of the highly electron withdrawing groups on the periphery leads to a lowering in the energy of the molecular frontier orbitals as well as an increase in the electron affinity. Additionally, all molecules studies are found to be most stable in their anionic form, demonstrating their potential as n-type materials. However, the calculated internal reorganization energy slightly increases as a function of peripheral modification. By varying the degree of modification we develop a strategy for obtaining an optimal balance between low reorganization energy and high electron affinity for the development of novel n-type optoelectronic materials.

Electronic doping-enabled transition from n- to p-type conductivity over Au@CdS core–shell nanocrystals toward unassisted photoelectrochemical water splitting

2019 ◽  
Vol 7 (40) ◽  
pp. 23038-23045 ◽  
Author(s):  
Rongrong Pan ◽  
Jia Liu ◽  
Yuemei Li ◽  
Xinyuan Li ◽  
Erhuan Zhang ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Cation Exchange ◽  
Water Splitting ◽  
Photoelectrochemical Water Splitting ◽  
Core Shell ◽  
Type Conductivity ◽  
Hybrid Nanocrystals ◽  
Novel Strategy ◽  
Electronic Doping ◽  
P Type

Here we show a novel strategy for tailoring the synergistic electrical properties of metal@semiconductor hybrid nanocrystals (HNCs) based on cation exchange-enabled electronic doping.

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