Indenofluorene-based-copolymers: Influence of electron-deficient benzothiadiazole (BT) and benzooxadiazole (BO) moieties on light emitting devices

Thu-Trang Do; Keiichiro Matsuki; Tomo Sakanoue; Fu-Lung Wong; Sergei Manzhos; Chun-Sing Lee; John Bell; Taishi Takenobu; Prashant Sonar

doi:10.1016/j.orgel.2019.03.050

Indenofluorene-based-copolymers: Influence of electron-deficient benzothiadiazole (BT) and benzooxadiazole (BO) moieties on light emitting devices

Thu-Trang Do, Keiichiro Matsuki, Tomo Sakanoue, Fu-Lung Wong, Sergei Manzhos, Chun-Sing Lee, John Bell, Taishi Takenobu^*, Prashant Sonar^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

12 Citations (Scopus)

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 (CE_max ) of 0.24 cd/A, a maximum power efficiency (PE_max ) of 0.11 lm/W and a maximum brightness (MB_max ) 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.

Original language	English
Pages (from-to)	14-24
Journal	Organic Electronics: physics, materials, applications
Volume	70
Online published	30 Mar 2019
DOIs	https://doi.org/10.1016/j.orgel.2019.03.050
Publication status	Published - Jul 2019

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Research Keywords

Benzooxadiazole
Benzothiadiazole
Indenofluorene
Light emitting electrochemical cells (LECs)
Organic light-emitting diodes (OLEDs)

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Do, T.-T., Matsuki, K., Sakanoue, T., Wong, F.-L., Manzhos, S., Lee, C.-S., Bell, J., Takenobu, T., & Sonar, P. (2019). Indenofluorene-based-copolymers: Influence of electron-deficient benzothiadiazole (BT) and benzooxadiazole (BO) moieties on light emitting devices. Organic Electronics: physics, materials, applications, 70, 14-24. https://doi.org/10.1016/j.orgel.2019.03.050

@article{13d969f517ca407c96713f94d19c3053,

title = "Indenofluorene-based-copolymers: Influence of electron-deficient benzothiadiazole (BT) and benzooxadiazole (BO) moieties on light emitting devices",

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.",

keywords = "Benzooxadiazole, Benzothiadiazole, Indenofluorene, Light emitting electrochemical cells (LECs), Organic light-emitting diodes (OLEDs)",

author = "Thu-Trang Do and Keiichiro Matsuki and Tomo Sakanoue and Fu-Lung Wong and Sergei Manzhos and Chun-Sing Lee and John Bell and Taishi Takenobu and Prashant Sonar",

year = "2019",

month = jul,

doi = "10.1016/j.orgel.2019.03.050",

language = "English",

volume = "70",

pages = "14--24",

journal = "Organic Electronics: physics, materials, applications",

issn = "1566-1199",

publisher = "Elsevier B.V.",

}

Do, T-T, Matsuki, K, Sakanoue, T, Wong, F-L, Manzhos, S, Lee, C-S, Bell, J, Takenobu, T & Sonar, P 2019, 'Indenofluorene-based-copolymers: Influence of electron-deficient benzothiadiazole (BT) and benzooxadiazole (BO) moieties on light emitting devices', Organic Electronics: physics, materials, applications, vol. 70, pp. 14-24. https://doi.org/10.1016/j.orgel.2019.03.050

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 - Publication in refereed journal › peer-review

TY - JOUR

T1 - Indenofluorene-based-copolymers

T2 - Influence of electron-deficient benzothiadiazole (BT) and benzooxadiazole (BO) moieties on light emitting devices

AU - Do, Thu-Trang

AU - Matsuki, Keiichiro

AU - Sakanoue, Tomo

AU - Wong, Fu-Lung

AU - Manzhos, Sergei

AU - Lee, Chun-Sing

AU - Bell, John

AU - Takenobu, Taishi

AU - Sonar, Prashant

PY - 2019/7

Y1 - 2019/7

N2 - 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.

AB - 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.

KW - Benzooxadiazole

KW - Benzothiadiazole

KW - Indenofluorene

KW - Light emitting electrochemical cells (LECs)

KW - Organic light-emitting diodes (OLEDs)

UR - http://www.scopus.com/inward/record.url?scp=85063891265&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85063891265&origin=recordpage

U2 - 10.1016/j.orgel.2019.03.050

DO - 10.1016/j.orgel.2019.03.050

M3 - RGC 21 - Publication in refereed journal

SN - 1566-1199

VL - 70

SP - 14

EP - 24

JO - Organic Electronics: physics, materials, applications

JF - Organic Electronics: physics, materials, applications

ER -

Indenofluorene-based-copolymers: Influence of electron-deficient benzothiadiazole (BT) and benzooxadiazole (BO) moieties on light emitting devices

Abstract

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