TY - JOUR
T1 - Magnetic field effect of the singlet fission reaction in tetracene-based diodes
AU - Cheng, Chiao Yu
AU - Chitraningrum, Nidya
AU - Chen, Xuan Ming
AU - Wen, Ten Chin
AU - Guo, Tzung Fang
N1 - Funding Information:
The authors would like to thank Ministry of Science and Technology (MOST) in Taiwan (MOST 102-2628-M-006-001-MY3 and 105-2119-M-006-022-MY3 ) and the Asian Office of Aerospace Research and Development (AOARD FA2386-14-1-4012 ) for financially supporting this research.
Funding Information:
The authors would like to thank Ministry of Science and Technology (MOST) in Taiwan (MOST 102-2628-M-006-001-MY3 and 105-2119-M-006-022-MY3) and the Asian Office of Aerospace Research and Development (AOARD FA2386-14-1-4012) for financially supporting this research.
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/5
Y1 - 2018/5
N2 - We investigate the magnetophotocurrent (MPC) response in tetracene-based diodes and attribute the initially decreasing and then increasing MPC responses to the feature of the singlet fission (SF) reaction (a magnetic field sensitive process) as modulated by the applied magnetic field in the tetracene active layer. The SF reaction is further characterized by the magnetophotoluminescence (MPL) measurement of the tetracene film, in which the variation of MPL is correlated with the change of MPC response in the device. However, the SF reaction of the singlet excitons in the tetracene would compete with the separation of the opposite charge carriers at the donor/acceptor interfaces by depositing the fullerene (C60) on the tetracene active layer to yield a planar heterojunction. Our results indicate that the charge separation is more effective than the SF reaction. The dissociation and the charge reaction processes of the charge transfer complexes at donor/acceptor interfaces dominate the photocurrent as well as MPC response in tetracene/C60-based diodes.
AB - We investigate the magnetophotocurrent (MPC) response in tetracene-based diodes and attribute the initially decreasing and then increasing MPC responses to the feature of the singlet fission (SF) reaction (a magnetic field sensitive process) as modulated by the applied magnetic field in the tetracene active layer. The SF reaction is further characterized by the magnetophotoluminescence (MPL) measurement of the tetracene film, in which the variation of MPL is correlated with the change of MPC response in the device. However, the SF reaction of the singlet excitons in the tetracene would compete with the separation of the opposite charge carriers at the donor/acceptor interfaces by depositing the fullerene (C60) on the tetracene active layer to yield a planar heterojunction. Our results indicate that the charge separation is more effective than the SF reaction. The dissociation and the charge reaction processes of the charge transfer complexes at donor/acceptor interfaces dominate the photocurrent as well as MPC response in tetracene/C60-based diodes.
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U2 - 10.1016/j.orgel.2018.01.036
DO - 10.1016/j.orgel.2018.01.036
M3 - Article
AN - SCOPUS:85041486292
SN - 1566-1199
VL - 56
SP - 11
EP - 15
JO - Organic Electronics: physics, materials, applications
JF - Organic Electronics: physics, materials, applications
ER -