Injection‐induced de‐doping in a conducting polymer during device operation: Asymmetry in the hole injection and extraction rates
PJ Chia, LL Chua, S Sivaramakrishnan… - Advanced …, 2007 - Wiley Online Library
Advanced Materials, 2007•Wiley Online Library
A mechanism is described that can alter the doping level of conducting polymers during
normal electrical injection, which arises from differential charge extraction/injection into
transport sites, and which is likely to be an intrinsic feature of the hopping transport itself.
This and not Joule heating is the cause of the conductance decay in PEDT: PSS at strong
electrical injection, in which the polyelectrolyte counter‐ion also plays a key role. Neutral
(non‐acidic) PEDT: PSS is more stable in this regard.
normal electrical injection, which arises from differential charge extraction/injection into
transport sites, and which is likely to be an intrinsic feature of the hopping transport itself.
This and not Joule heating is the cause of the conductance decay in PEDT: PSS at strong
electrical injection, in which the polyelectrolyte counter‐ion also plays a key role. Neutral
(non‐acidic) PEDT: PSS is more stable in this regard.
Abstract
A mechanism is described that can alter the doping level of conducting polymers during normal electrical injection, which arises from differential charge extraction/injection into transport sites, and which is likely to be an intrinsic feature of the hopping transport itself. This and not Joule heating is the cause of the conductance decay in PEDT: PSS at strong electrical injection, in which the polyelectrolyte counter‐ion also plays a key role. Neutral (non‐acidic) PEDT: PSS is more stable in this regard.
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