In:
ChemElectroChem, Wiley, Vol. 7, No. 1 ( 2020-01-02), p. 260-265
Abstract:
Here, we systematically examine the impact of electrode work function, ionic species, and charge injection layers on the operation of polymer light‐emitting electrochemical cells (PLECs) based on p ‐type Super Yellow. To achieve PLECs yielding a more intensive luminance compared to what can be achieved from the non‐ionic light‐emitting device counterpart, i. e ., the polymer light‐emitting diode (PLED), in an analogous device structure, the experimental results here guide the following lessons. First, the use of charge injection layer does not necessarily yield a PLEC that outperforms its PLED counterpart but rather complexes the device structure. Second, injection of minority electrons is critical for enhancing the luminescence characteristics of p ‐type polymer based LECs, and the enhanced electron injection is achieved more effectively by modifying the work function of the cathode than by changing the cations. Third, for p ‐type PLECs with a low‐work function cathode, careful selection of anions can drastically change the device performance, which are involved in the p ‐type electrochemically doping process.
Type of Medium:
Online Resource
ISSN:
2196-0216
,
2196-0216
DOI:
10.1002/celc.201901772
Language:
English
Publisher:
Wiley
Publication Date:
2020
detail.hit.zdb_id:
2724978-5
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