Miaoxiang Chen

Active Matrix Displays Based on All‐Organic Electrochemical Smart Pixels Printed on Paper

An organic electronic paper display technology (see Figure and also inside front cover) is presented. The electrochromic display cell together with the addressing electrochemical transistor form si ...

1 micron wavelength photo- and electroluminescence from a conjugated polymer

We report photo- and electroluminescence from an alternating conjugated polymer consisting of fluorene units and low-band gap donor-acceptor-donor (D–A–D) units. The D–A–D segment includes two elec ...

Electric current rectification by an all-organic electrochemical device

An all-organic printed electrochemical rectifier is reported. The device is based on a patterned layer of poly(3,4-ethylenedioxythiophene) poly(styrene sulfonate) (PEDOT:PSS) that interfaces a patterned electrolyte top layer. Overlap between the electrolyte layer and the conducting polymer pattern results in the formation of two electrochemically active areas within the conducting polymer pattern. When bias voltage is applied across the conducting polymer pattern, the PEDOT in the negatively biased areas is reduced electrochemically, while the PEDOT in the positively biased area is further oxidized. Reducing PEDOT from its p-doped, pristine state to the neutral state results in a marked loss of electrical conductivity. Due to the unsymmetrical device geometry, the current through the device may be shut off for one polarity of applied bias voltage with an electrical current rectification ratio of 100 compared to the opposite polarity. The output characteristics of a corresponding half wave rectifier as well as those from a full wave bridge rectifier show stable performance at frequencies below 15 Hz.

High carrier mobility in low band gap polymer-based field-effect transistors

A conjugated polymer with a low band gap of 1.21 eV, i.e., absorbing infrared light, is demonstrated as active material in field-effect transistors (FETs). The material consists of alternating fluo ...

Polymer Optical Interconnects—A Scalable Large-Area Panel Processing Approach

A flexible approach to producing optical interconnects on 609.6

Printed Electrochemical Devices Using Conducting Polymers as Active Materials on Flexible Substrates

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Paper electronics and electronic paper

609.6 mm large-area panels is demonstrated. Stepwise projection patterning from 101.6

Threshold-voltage tuning characteristics of all-organic electrochemical vertical rectifiers on flexible substrates

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Organic Electrochemical Smart Pixels

101.6 mm masks has generated optical waveguide patterns over the whole panel using large-area projection lithography equipment. The waveguide routing design allows optical waveguides on different 101.6

All-organic electrochemical device with bi-stable and dynamic functionality

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