MRS Meetings and Events


EL07.09.08 2023 MRS Fall Meeting

Photoelectrochemical Polymerization (PEP) of EDOT for Formation of Pattered PEDOT at Specific Arbitrary Regions on Hematite (α-Fe2O3)

When and Where

Nov 29, 2023
8:00pm - 10:00pm

Hynes, Level 1, Hall A



Misol Hwang1,Taeyoon Kim1,Joohoon Kim1

Kyung Hee University1


Misol Hwang1,Taeyoon Kim1,Joohoon Kim1

Kyung Hee University1
We performed photoelectrochemical polymerization (PEP) on hematite (α-Fe<sub>2</sub>O<sub>3</sub>) to synthesize PEDOT (poly(3,4-ethylenedioxythiophene)) in specific arbitrary regions with a high 2D flexibility. PEDOT is a conductive polymer that is highly attractive due to its ability to enhance conductivity and stability of electrical activity when used as crosslinkers or fillers. Hematite, as a semiconductor material with a bandgap of 1.9-2.2 eV, generates minority charge carriers (holes) with a short diffusion length when exposed to visible light. we confirmed the synthesis of PEDOT on hematite using cyclic voltammetry, which exhibited similar characteristics to PEDOT synthesized on Pt and ITO electrodes. Furthermore, we demonstrated the synthesis of PEDOT at lower voltages via PEP compared to voltages in the absence of light illumination. Additionally, by applying the appropriate voltage and utilizing a digital mirror device (DMD) to expose patterned light at specific arbitrary regions, we generated patterned PEDOT at the regions with a high 2D flexibility. We expect that these results can be utilized to enhance sensitivity and improve the fine-tuned functionalities of various semiconductor-based devices, including solar cells, supercapacitors, and biosensors.


electrochemical synthesis | polymerization

Symposium Organizers

Gabriela Borin Barin, Empa
Shengxi Huang, Rice University
Yuxuan Cosmi Lin, TSMC Technology Inc
Lain-Jong Li, The University of Hong Kong

Symposium Support

Montana Instruments

Oxford Instruments WITec
Raith America, Inc.

Session Chairs

Gabriela Borin Barin
Yuxuan Cosmi Lin

In this Session

Large-Area, Pulsed Laser Deposition of MoS2/a-BN Heterostructures for Back-Gate Field Effect Transistors Applications

A Study of Transport and Optical Properties of Liquid Nitrogen-Assisted Deposition of Titanium Oxynitride Thin Films

High-Performance Electromechanical Power Generation of Lithography-Free Large-Scale MoS2 Monolayer Film Harvesters

An Investigation of Lithium and Cobalt Intercalation Method in 2D Transition Metal Dichalcogenides

Effect of Hot-Wire Oxidization and Sulfur Annealing on Layered p-MoS2 for TFT Application

Photoelectrochemical Polymerization (PEP) of EDOT for Formation of Pattered PEDOT at Specific Arbitrary Regions on Hematite (α-Fe2O3)

Spatially Resolved and In Situ Electrochemical Imaging on Two-Dimensional Materials using Scanning ElectroChemical Cell Microscopy (SECCM)

Nanowire-Based Sensor Platform for Breath Analysis

Sensitive Microwave Spectroscopy of Van der Waals Materials with Coplanar Waveguides

Ultratrace PFAS Detection using Amplifying Fluorescent Polymers

View More »

Publishing Alliance

MRS publishes with Springer Nature