Indenofluorene-based-copolymers : Influence of electron-deficient benzothiadiazole (BT) and benzooxadiazole (BO) moieties on light emitting devices
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Pages (from-to) | 14-24 |
Journal / Publication | Organic Electronics: physics, materials, applications |
Volume | 70 |
Online published | 30 Mar 2019 |
Publication status | Published - Jul 2019 |
Link(s)
Abstract
Herein, two copolymers, poly [(6,6,12,12-tetraoctylindenofluorene)-co-(2,1,3-benzothiadiazole)] (PIFL-BT) and poly [(6,6,12,12-tetraoctylindenofluorene)-co-(2,1,3- benzooxadiazole)] (PIFL-BO) were synthesized and characterized. The effect of two electron accepting moieties benzothiadiazole (BT) and benzooxadiazole (BO) in combination with common tetraalkyl substituted indenofluorene building block in the backbone of conjugated polymer is studied in detail via thermal, optical, and electrochemical characteristics. To investigate the electroluminescence characteristics, both organic light emitting diodes (OLEDs) and light emitting electrochemical cells (LECs) devices are fabricated using copolymers as an active light-emitting layer. For the OLED devices, only polymer PIFL-BT emitted yellow light with CIE coordinates of (0.43, 0.55), a maximum current efficiency (CEmax ) of 0.24 cd/A, a maximum power efficiency (PEmax ) of 0.11 lm/W and a maximum brightness (MBmax ) of 1398 cd/m2. For the LEC device, both materials showed light emission and higher current density than OLEDs devices, indicating better carrier injection in LECs.
Research Area(s)
- Benzooxadiazole, Benzothiadiazole, Indenofluorene, Light emitting electrochemical cells (LECs), Organic light-emitting diodes (OLEDs)
Citation Format(s)
Indenofluorene-based-copolymers : Influence of electron-deficient benzothiadiazole (BT) and benzooxadiazole (BO) moieties on light emitting devices. / Do, Thu-Trang; Matsuki, Keiichiro; Sakanoue, Tomo et al.
In: Organic Electronics: physics, materials, applications, Vol. 70, 07.2019, p. 14-24.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review