Tuning Polymer Semiconductor Morphology through Additive Engineering for a Stable Phototransistor

2021 ◽  
Author(s):  
Anwesha Choudhury ◽  
Ritesh Kant Gupta ◽  
Rabindranath Garai ◽  
Parameswar Krishnan Iyer
Keyword(s):  
Polymer Semiconductor

Temperature-Modulated Doping at Polymer Semiconductor Interfaces

2021 ◽  
Vol 3 (3) ◽  
pp. 1384-1393
Author(s):  
Natalie P. Holmes ◽  
Daniel C. Elkington ◽  
Matthew Bergin ◽  
Matthew J. Griffith ◽  
Anirudh Sharma ◽  
...  
Keyword(s):  
Semiconductor Interfaces ◽  
Polymer Semiconductor

A small bandgap (3E,7E)-3,7-bis(2-oxoindolin-3-ylidene)benzo[1,2-b:4,5-b′]difuran-2,6(3H,7H)-dione (IBDF) based polymer semiconductor for near-infrared organic phototransistors

2017 ◽  
Vol 5 (46) ◽  
pp. 12163-12171 ◽  
Author(s):  
Yinghui He ◽  
Jesse T. E. Quinn ◽  
Dongliang Hou ◽  
Jenner H.L. Ngai ◽  
Yuning Li
Keyword(s):  
Band Gap ◽  
Near Infrared ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Polymer Semiconductor ◽  
Donor Acceptor ◽  
Small Band

A novel small bandgap donor–acceptor polymer with a very small band gap of 0.95 eV shows promising photoresponse under near infrared light in phototransistors.

scholarly journals Convenient fabrication of conjugated polymer semiconductor nanotubes and their application in organic electronics

2018 ◽  
Vol 5 (8) ◽  
pp. 180868
Author(s):  
Lanchao Ma ◽  
Shuixing Dai ◽  
Xiaowei Zhan ◽  
Xinyang Liu ◽  
Yu Li
Keyword(s):  
Organic Solar Cells ◽  
Field Effect Transistors ◽  
Electronic Devices ◽  
Solution Concentration ◽  
Core Shell ◽  
Organic Electronic Devices ◽  
Organic Electronic ◽  
Light Emitting ◽  
Preparation Conditions ◽  
Polymer Semiconductor

Organic heterojunction is indispensable in organic electronic devices, such as organic solar cells, organic light-emitting diodes and so on. Fabrication of core–shell nanostructure provides a feasible and novel way to prepare organic heterojunction, which is beneficial for miniaturization and integration of organic electronic devices. Fabrication of nanotubes which constitute the core–shell structure in large quantity is the key for the realization of application. In this work, a simple and convenient method to prepare nanotubes using conjugated copolymer of perylene diimide and dithienothiophene (P(PDI-DTT)) was demonstrated. The relationship between preparation conditions (solvent atmosphere, solution concentration and pore diameter of templates) and morphology of nanostructure was studied systematically. P(PDI-DTT) nanotubes could be fabricated in regular shape and large quantity by preparing the solution with appropriate concentration and placing anodic aluminium oxide template with nanopore diameter of 200 nm in the solvent atmosphere. The tubular structure was confirmed by scanning electron microscopy. P(PDI-DTT) nanotubes exhibited electron mobility of 0.02 cm 2 V –1 s –1 in field-effect transistors under ambient condition. Light-emitting nanostructures were successfully fabricated by incorporating tetraphenylethylene into polymer nanotubes.

scholarly journals A high-spin ground-state donor-acceptor conjugated polymer

2019 ◽  
Vol 5 (5) ◽  
pp. eaav2336 ◽  
Author(s):  
A. E. London ◽  
H. Chen ◽  
M. A. Sabuj ◽  
J. Tropp ◽  
M. Saghayezhian ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
High Spin ◽  
Ground State ◽  
Conjugated Polymer ◽  
Organic Materials ◽  
Energy Gap ◽  
Light Element ◽  
Paramagnetic Resonance ◽  
Practical Applications ◽  
Polymer Semiconductor

Interest in high-spin organic materials is driven by opportunities to enable far-reaching fundamental science and develop technologies that integrate light element spin, magnetic, and quantum functionalities. Although extensively studied, the intrinsic instability of these materials complicates synthesis and precludes an understanding of how fundamental properties associated with the nature of the chemical bond and electron pairing in organic materials systems manifest in practical applications. Here, we demonstrate a conjugated polymer semiconductor, based on alternating cyclopentadithiophene and thiadiazoloquinoxaline units, that is a ground-state triplet in its neutral form. Electron paramagnetic resonance and magnetic susceptibility measurements are consistent with a high-to-low spin energy gap of 9.30 × 10−3 kcal mol−1. The strongly correlated electronic structure, very narrow bandgap, intramolecular ferromagnetic coupling, high electrical conductivity, solution processability, and robust stability open access to a broad variety of technologically relevant applications once thought of as beyond the current scope of organic semiconductors.

Large Cubic Nonlinear Optical Properties of Organic Semiconductor Superlattices

1989 ◽  
Vol 173 ◽  
Author(s):  
Samson A. Jenekhe ◽  
Wen-Chang Chen ◽  
Saukwan Lo ◽  
Steven R. Flom
Keyword(s):  
Four Wave Mixing ◽  
Organic Polymer ◽  
Wave Mixing ◽  
Optical Nonlinearities ◽  
Large Magnitude ◽  
Semiconductor Superlattices ◽  
Polymer Semiconductor ◽  
Device Applications ◽  
Further Development ◽  
532 Nm

ABSTRACTWe have measured extremely large second hyperpolarizabilities〈γxxxx〉 in solutions of two recently prepared organic polymer semiconductor superlattices. These block copolymers are of alternating aromatic and quinoidal moieties and structurally differ by a side group substituent. The values observed are 1.6 × 10−29 esu for the parent copolymer (PBTBQ) and 3.7 × 10−30 esu for its acetoxy derivative (PBTABQ). The corresponding values of χ(3) are estimated to be 2.7 × 10−7 esu and 4.5 × 108 esu. The measurements, made by picosecond degenerate four wave mixing at 532 nm, showed that the dynamics of the larger χ(3) valued copolymer were faster than the 30 ps resolution of the instrument while the derivative exhibited a slower response. The large magnitude and rapid response of the cubic optical nonlinearities in these novel materials suggest theiT potential for further development and photonic device applications.

scholarly journals Ion Coordination and Chelation in a Glycolated Polymer Semiconductor: Molecular Dynamics and X-Ray Fluorescence Study

2020 ◽  
Author(s):  
Micaela Matta ◽  
Ruiheng Wu ◽  
Bryan D. Paulsen ◽  
Anthony Petty ◽  
Rajendar Sheelamanthula ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Figure Of Merit ◽  
Hole Mobility ◽  
Semiconducting Polymer ◽  
Polymer Microstructure ◽  
X Ray ◽  
Polymer Semiconductor ◽  
Full Study ◽  
Cation Coordination ◽  
Dynamics Simulations

<p>Organic electrochemical transistors (OECTs) are based on the doping of a semiconducting polymer by an electrolyte. Due to their ability to conjugate volumetric ion penetration with high hole mobility and charge density, polythiophenes bearing glycolated side chains have rapidly surged as the highest performing materials for OECTs; amongst them, p(g2T-TT) is amongst those with the highest figure of merit. While recent studies have shown how different doping anions tend to affect the polymer microstructure, only a handful of electrolytes have been tested in mixed conduction devices. Our work provides an atomistic picture of the p(g2T-TT) -electrolyte interface in the ‘off’ state of an OECT, expected to be dominated by cation-polymer interactions. Using a combination of molecular dynamics simulations and X-ray fluorescence, we show how different anions effectively tune the coordination and chelation of cations by glycolated polymers. At the same time, softer and hydrophobic anions such as TFSI and ClO<sub>4</sub> are found to preferentially interact with the p(g2T-TT) phase, further enhancing polymer-cation coordination. Besides opening the way for a full study of electrolyte doping mechanisms in operating devices, our results suggest that tailoring the electrolyte for different applications and materials might be a viable strategy to tune the performance of mixed conducting devices.</p>

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