TY - JOUR
T1 - Low voltage operating organic light emitting transistors with efficient charge blocking layer
AU - Bachelet, Alexandre
AU - Chabot, Marion
AU - Ablat, Abduleziz
AU - Takimiya, Kazuo
AU - Hirsch, Lionel
AU - Abbas, Mamatimin
N1 - Funding Information:
A. Bachelet acknowledges financial support of Université Bordeaux Doctoral Grant and A. Ablat from the French national PAUSE program .
Funding Information:
A. Bachelet acknowledges financial support of Universit? Bordeaux Doctoral Grant and A. Ablat from the French national PAUSE program.
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2021/1
Y1 - 2021/1
N2 - Charge injection/blocking layers play important roles in the performances of organic electronic devices. Their incorporation into organic light emitting transistors has been limitted, due to generally high operating voltages (above 60 V) of these devices. In this work, two hole blocking molecules are integrated into tris-(8-hydroxyquinoline) aluminum (Alq3) based light emitting transistors under operating voltage as low as 5 V. The effects of hole blocking and electron injection are decoupled through the differences in the energy levels. Significantly improved optical performance is achieved with the molecule of suitable energy level for electron injection. Surprisingly, a decreased performance is observed in the case of another hole blocking molecule evidencing that charge injection overweighs charge blocking in this device architecture.
AB - Charge injection/blocking layers play important roles in the performances of organic electronic devices. Their incorporation into organic light emitting transistors has been limitted, due to generally high operating voltages (above 60 V) of these devices. In this work, two hole blocking molecules are integrated into tris-(8-hydroxyquinoline) aluminum (Alq3) based light emitting transistors under operating voltage as low as 5 V. The effects of hole blocking and electron injection are decoupled through the differences in the energy levels. Significantly improved optical performance is achieved with the molecule of suitable energy level for electron injection. Surprisingly, a decreased performance is observed in the case of another hole blocking molecule evidencing that charge injection overweighs charge blocking in this device architecture.
KW - Hole blocking layer
KW - Low voltage operation
KW - Organic light emitting transistor
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U2 - 10.1016/j.orgel.2020.106024
DO - 10.1016/j.orgel.2020.106024
M3 - Article
AN - SCOPUS:85096417183
VL - 88
JO - Organic Electronics: physics, materials, applications
JF - Organic Electronics: physics, materials, applications
SN - 1566-1199
M1 - 106024
ER -