Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Charge Trapping in Polymer Electrets with Highly Dilute Blended Arylamine Donors

Journal Article · · ACS Applied Electronic Materials
 [1];  [2];  [2];  [2]
  1. Johns Hopkins Univ., Baltimore, MD (United States); Johns Hopkins University, Department of Physics and Astronomy
  2. Johns Hopkins Univ., Baltimore, MD (United States)
+ Show Author Affiliations
The nature of and ability to control biasing across dielectrics is a key area of research for the design of more versatile organic field-effect transistors (OFETs). One important technique to achieve such control is the inclusion of donor or acceptor molecules in the dielectric to modulate charge trapping therein. Here in this work, we report the effects of the additive concentration on OFETs with two different arylamines blended in polystyrene (PS) dielectrics, N,N'-diphenyl-N,N'-di-p-tolylbenzene-1,4-diamine (MPDA) and 4-anilinotriphenylamine (PATPA), as well as a comparison between PATPA/PS blends and dielectrics where PATPA was chemically tethered to the PS matrix. Dielectrics included in OFETs were subject to charging, and their charging capacity and stability were extracted from the OFET threshold voltages. For both MPDA/PS and PATPA/PS, blends with additive mole fractions as low as χ = 3 × 10–4 were sufficient to cause increases in the charge trapping relative to pure PS dielectrics. We observed a pronounced inverse relationship between the capacity and stability of blended systems at larger mole fractions (χ = 10–2) where the interadditive molecule distances became comparable to their size (~1 nm). Differences between MPDA and PATPA behaviors were consistent with their different structures and sizes. Furthermore, we found a small effect on electronic trapping arising from the chemical tethering of PATPA to the PS matrix. This result was consistent with the changes made to the additive during the tethering process and small compared to the observed differences arising from the concentration. These results suggest that the average intermolecular separation is a key determinant of charge storage stability in blended dielectrics.
Research Organization:
Johns Hopkins Univ., Baltimore, MD (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
FG02-07ER46465
OSTI ID:
1774806
Journal Information:
ACS Applied Electronic Materials, Journal Name: ACS Applied Electronic Materials Journal Issue: 4 Vol. 3; ISSN 2637-6113
Publisher:
ACS PublicationsCopyright Statement
Country of Publication:
United States
Language:
English

References (38)

Charge-Transporting Molecular Glasses journal October 2002
Plastic Solar Cells journal February 2001
Low-k Insulators as the Choice of Dielectrics in Organic Field-Effect Transistors journal March 2003
Organic Non-Volatile Memory Based on Pentacene Field-Effect Transistors Using a Polymeric Gate Electret journal December 2006
Functional Organic Field-Effect Transistors journal September 2010
The Bulk Heterojunction in Organic Photovoltaic, Photodetector, and Photocatalytic Applications journal August 2020
Doping of organic semiconductors journal December 2012
Optical and electrical properties of nanostructured N,N′-diphenyl-N,N′-di-p-tolylbenzene-1,4-diamine organic thin films journal July 2018
Characterization of annealed N,N′-diphenyl-N,N′-di-p-tolylbenzene-1,4-diamine nanostructured thin films journal February 2019
The structure and energetics of TPD ground and excited states journal January 2007
Voltage color tunable OLED with (Sm,Eu)-β-diketonate complex blend journal September 2004
Towards high-power-efficiency solution-processed OLEDs: Material and device perspectives journal April 2020
Optical band gaps of organic semiconductor materials journal August 2016
Conjugated Polymers in Bioelectronics journal May 2018
Polymer-Based Gate Dielectrics for Organic Field-Effect Transistors journal March 2019
Synthesis, Fabrication, and Heterostructure of Charged, Substituted Polystyrene Multilayer Dielectrics and Their Effects in Pentacene Transistors journal April 2016
Highly Contrasting Static Charging and Bias Stress Effects in Pentacene Transistors with Polystyrene Heterostructures Incorporating Oxidizable N , N ′-Bis(4-methoxyphenyl)aniline Side Chains as Gate Dielectrics journal July 2018
Enhanced Electrical Conductivity in Polystyrene Nanocomposites at Ultra-Low Graphene Content journal June 2011
Low-Temperature, Solution-Processed, High-Mobility Polymer Semiconductors for Thin-Film Transistors journal April 2007
Boosting the Ambipolar Performance of Solution-Processable Polymer Semiconductors via Hybrid Side-Chain Engineering journal June 2013
Bucky Light Bulbs:  White Light Electroluminescence from a Fluorescent C 60 Adduct−Single Layer Organic LED journal May 1999
Reorganization Energies in the Transports of Holes and Electrons in Organic Amines in Organic Electroluminescence Studied by Density Functional Theory journal July 2003
Hole Transport in Triphenylamine Based OLED Devices: From Theoretical Modeling to Properties Prediction journal December 2011
Polyaromatic amines. Part 2. Synthesis of 4,4′,4″-tris(N-aryl-N-phenylamino)triphenylamine, N,N-bis[4-(N-aryl-N-phenylamino)phenyl]tolylamine and N,N,N′,N′-tetraaryl-o-phenylenediamine derivatives journal October 2001
Electron transporting semiconducting polymers in organic electronics journal January 2011
Towards printable organic thin film transistor based flash memory devices journal January 2011
Remarkably improved electromechanical actuation of polyurethane enabled by blending with silicone rubber journal January 2017
Organic field-effect transistor-based flexible sensors journal January 2020
Large and broadband piezoelectricity in smart polymer-foam space-charge electrets journal December 2000
Tuning the threshold voltage of organic field-effect transistors by an electret encapsulating layer journal January 2007
An analytical model for organic‐based thin‐film transistors journal July 1991
Effects of trifluoromethyl substituents on interfacial and bulk polarization of polystyrene gate dielectrics journal January 2019
Calculating the trap density of states in organic field-effect transistors from experiment: A comparison of different methods journal January 2010
Trap density of states in small-molecule organic semiconductors: A quantitative comparison of thin-film transistors with single crystals journal April 2010
Organic Nonvolatile Memory Transistors for Flexible Sensor Arrays journal December 2009
Electrical Conduction in Polystyrene–Chloranil System journal November 1980
Small Molecules Derived from Thieno[3,4-c]pyrrole-4,6-dione (TPD) and Their Use in Solution Processed Organic Solar Cells journal September 2017
Recent Progress in Thermoelectric Materials Based on Conjugated Polymers journal January 2019

Similar Records

2-Aminoanthracene Crystallization in Its Compatible Polystyrene Block: RAFT Synthesis and Enhanced Charge Retention in Pentacene Transistor Gate Dielectrics
Journal Article · Wed Oct 18 20:00:00 EDT 2023 · Macromolecules · OSTI ID:2205592
Effect of organic electroactive crystallites in a dielectric matrix on the electrical properties of a polymer dielectric
Journal Article · Thu Jun 29 20:00:00 EDT 2023 · Physical Review Materials · OSTI ID:1987653

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
dielectric charge trapping
field-effect transistors
phenylene diamines
polymer blends
threshold voltage shift