TY - JOUR
T1 - Magnetoconductance responses in organic charge-transfer-complex molecules
AU - Lee, Tsung Hsun
AU - Li, Jhen Hao
AU - Huang, Wei Shun
AU - Hu, Bin
AU - Huang, J. C.A.
AU - Guo, Tzung Fang
AU - Wen, Ten Chin
N1 - Funding Information:
The author Huang is grateful for the financial support from National Science Council (NSC) under Grant NSC96-2120-M-006-001. The author Guo would like to thank the NSC of Taiwan NSC99-2113-M-006-008-MY3, the Asian Office of Aerospace Research and Development (AOARD-10-4054), and NCKU Landmark project for financially support this research.
PY - 2011/8/15
Y1 - 2011/8/15
N2 - Blending 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ), a high electron affinity organic molecule, with N,N′-bis-(1-naphyl)-N, N′-diphenyl-1,1′-biphenyl′-4,4′-diamine (NPB) creates the charge-transfer-complex molecules and modulates the magnetoconductance (MC) responses of devices by an applied electrical bias. A negative MC response (-0.60%) is observed for the device made of NPB:F4-TCNQ(30%) film as the active layer, which has a distinct characteristic to negligible MC responses in pristine NPB- and F4-TCNQ-based devices. We attribute the MC responses to the magnetic-field-dependent transport of injected charge carriers through charge-transfer-complex molecules in the NPB:F4-TCNQ system, which are varied with the F4-TCNQ blending concentrations and the injection of minority charge carriers. Results of this study demonstrate a turning point of MC responses at the bias voltage near the threshold of the bipolar injection.
AB - Blending 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ), a high electron affinity organic molecule, with N,N′-bis-(1-naphyl)-N, N′-diphenyl-1,1′-biphenyl′-4,4′-diamine (NPB) creates the charge-transfer-complex molecules and modulates the magnetoconductance (MC) responses of devices by an applied electrical bias. A negative MC response (-0.60%) is observed for the device made of NPB:F4-TCNQ(30%) film as the active layer, which has a distinct characteristic to negligible MC responses in pristine NPB- and F4-TCNQ-based devices. We attribute the MC responses to the magnetic-field-dependent transport of injected charge carriers through charge-transfer-complex molecules in the NPB:F4-TCNQ system, which are varied with the F4-TCNQ blending concentrations and the injection of minority charge carriers. Results of this study demonstrate a turning point of MC responses at the bias voltage near the threshold of the bipolar injection.
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U2 - 10.1063/1.3627170
DO - 10.1063/1.3627170
M3 - Article
AN - SCOPUS:80052100429
SN - 0003-6951
VL - 99
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 7
M1 - 073307
ER -