Browsing Physics, Engineering Physics and Astronomy, Department of by Author "Gao, Jun"

The Bilayer Polymer Light-Emitting Electrochemical Cells

Birdee, Kiran

Polymer light-emitting electrochemical cells (LECs) are solid-state polymer devices that form light-emitting p-n junctions in situ from electrochemical doping, which occurs under an applied voltage or current bias. LECs ...

Bipolar Electrode Array Embedded in a Polymer Light-Emitting Electrochemical Cell

Gao, Jun; Chen, Shulun; AlTal, Faleh; Hu, Shiyu; Bouffier, Laurent; Wantz, Guillaume (American Chemical Society (ACS), 2017-09-20)

A linear array of aluminum discs is deposited between the driving electrodes of an extremely large planar polymer light-emitting electrochemical cell (PLEC). The planar PLEC is then operated at a constant bias voltage of ...

Decoding the Polymer p–n Junction: Controlled Dedoping and Reverse Bias Electroluminescence

Wang, Dongze; Desroche, Emmett; Gao, Jun (Wiley, 2020)

The polymer light-emitting electrochemical cell (PLEC) is a unique solid-state device possessing attractive attributes for low-cost applications, but also a junction structure that is still poorly understood. In a PLEC, ...

Dynamic Bipolar Electrode Array for Visualized Screening of Electrode Materials in Light-Emitting Electrochemical Cells

Hu, Shiyu; Gao, Jun (American Chemical Society (ACS), 2019-01-09)

Charge injection at a metal/semiconductor interface is of paramount importance for many chemical and physical processes. The dual injection of electrons and holes, for example, is necessary for electroluminescence in organic ...

The dynamic bipolar electrode in polymer light-emitting electrochemical cells

Hu, Shiyu; Gao, Jun (Elsevier BV, 2019-05-01)

The redox doping reactions in polymer light-emitting electrochemical cells (PLECs) have been analyzed to gain insight into a new type of bipolar electrode (BPE) formed within the cells. Planar (lateral) PLECs are constructed ...

Electrical and Optical Probing of Extremely Large Planar Polymer Light-Emitting Electrochemical Cells

Hu, Yufeng (2011-05-13)

Polymer light-emitting electrochemical cells (LECs) are unique solid-state light-emitting devices operating on the principle of in situ electrochemical doping and the formation of a p-n junction. Compared to conventional ...

High resolution scanning optical imaging of a frozen planar polymer light-emitting electrochemical cell: an experimental and modelling study

AlTal, Faleh; Gao, Jun (Springer Science and Business Media LLC, 2017-04-01)

Light-emitting electrochemical cells (LECs) are organic photonic devices based on a mixed electronic and ionic conductor. The active layer of a polymer-based LEC consists of a luminescent polymer, an ion-solvating/transport ...

How Electrode Material Affects the Performance of Polymer Light-Emitting Electrochemical Cells

Hohertz, Donna (2008-09-23)

Polymer light emitting electrochemical cells (LECs) are solid-state devices containing an active layer blend of luminescent polymer, ion transport material and salt sandwiched between two electrodes. They operate on the ...

Laser-Induced Bipolar Electrochemistry—On-Demand Formation of Bipolar Electrodes in a Solid Polymer Light-Emitting Electrochemical Cell

AlTal, Faleh; Gao, Jun (American Chemical Society (ACS), 2018-08-01)

Bipolar electrochemistry (BPEC) is a versatile and powerful technique that has found applications in sensing, chemical synthesis, catalysis, fuel cells, and batteries, among others. In BPEC, the reactions of interest occur ...

Polymer Electrochemical Light-Emitting Devices and Photovoltaic Cells

Zhang, Yanguang (2009-12-14)

Light-emitting electrochemical cells (LECs) are solid state polymer devices operating through the formation of a light-emitting p-n junction by in situ electrochemical doping. The LEC film contains a luminescent polymer ...

Polymer Light-Emitting Electrochemical Cells with Embedded Bipolar Electrodes: Visualizing Bipolar Electrochemistry in Solid State

Chen, Shulun (2016-10-17)

The work presented in this thesis examines the properties of BPEs of various configurations and under different operating conditions in a large planar LEC system. Detailed analysis of time-lapsed fluorescence images allows ...

Polymer light-emitting electrochemical cells—Recent advances and future trends

Gao, Jun (Elsevier BV, 2018-01-01)

Polymer light-emitting electrochemical cells (PLECs) are electroluminescent devices whose operation involves both ionic and electronic charges. A key reaction in PLEC is the electrochemical doping of the light emitter, a ...

Salt-Doped Polymer Light-Emitting Devices

Gautier, Bathilde (2013-12-04)

Polymer Light-Emitting Electrochemical Cells (PLECs) are solid state devices based on the in situ electrochemical doping of the luminescent polymer and the formation of a p-n junction where light is emitted upon the ...

Scaling and Optimization of Polymer Bulk Homojunction Light-Emitting and Photovoltaic Cells

Bonnet, Wayne (2008-09-15)

The polymer light-emitting electrochemical cell (LEC) is an alternative method for producing electroluminescence (EL) from conjugated luminescent polymers. The in situ electrochemical doping process that leads to a dynamic ...

Scanning Optical Imaging and Stress Tests of Polymer Light-Emitting Electrochemical Cells

Altal, Faleh

Polymer light-emitting electrochemical cells (PLECs) were tested by means of bias stress, luminescent imaging and optical scanning probing. These cells were characterized in terms of the effect of doping on the operational ...

Scanning Photocurrent and Photoluminescence Imaging of Frozen Polymer Light Emitting Electrochemical Cells

Inayeh, Alex (2013-05-29)

A polymer light-emitting electrochemical cell (LEC) is a solid-state polymer device operating according to in situ electrochemical doping and the formation of a light-emitting polymer p-n junction. This operating mechanism, ...

Shaping Electroluminescence with a Large, Printed Bipolar Electrode Array: Solid Polymer Electrochemical Cells with Over a Thousand Light‐Emitting p–n Junctions

Hu, Shiyu; Gao, Jun (Wiley, 2020-03-31)

The electroluminescence from a solid polymer light‐emitting electrochemical cell typically originates from a single, narrow p‐n or p‐i‐n junction. The bulk of the active material is non‐emitting and must be doped before ...