TY - JOUR
T1 - Modulations of photoinduced magnetoconductance for polymer diodes
AU - Lee, Tsung Hsun
AU - Guo, Tzung Fang
AU - Huang, J. C.A.
AU - Wen, Ten Chin
N1 - Funding Information:
The author Guo would like to thank the National Science Council (NSC) of Taiwan NSC96-2113-M-006-009-MY3 and the Asian Office of Aerospace Research and Development (AOARD-07-4068) and NCKU Landmark Project for financially supporting this research. The author Huang is grateful for the financial support from NSC under Grant No. NSC96-2120-M-006-001.
PY - 2008
Y1 - 2008
N2 - This study elucidates the magnetoconductance (MC) response of polymer diodes, which can be modulated by photoillumination, varying the composition of the active layer and applying electrical bias. Under illumination, the short-circuit current of polymer diodes with active layers of regioregular poly(3-hexylthiophene) (P3HT) exhibits an MC response of approximately -4.0% in a magnetic field B=1000 mT at room temperature. The MC response drastically reverses from negative to positive (-23.0% to 2.0%) as the electrical bias is increased from nearly below to above the open-circuit voltage. However, it is quenched (<0.1%) when the illumination is turned off or an electron acceptor material, [6,6]-phenyl C61-butyric acid methyl ester, is blended with P3HT as the active layer, suggesting that, in nature, the MC response is associated with the illumination and excitonic states. The annihilation of triplet excitons probably dominates the negative MC response.
AB - This study elucidates the magnetoconductance (MC) response of polymer diodes, which can be modulated by photoillumination, varying the composition of the active layer and applying electrical bias. Under illumination, the short-circuit current of polymer diodes with active layers of regioregular poly(3-hexylthiophene) (P3HT) exhibits an MC response of approximately -4.0% in a magnetic field B=1000 mT at room temperature. The MC response drastically reverses from negative to positive (-23.0% to 2.0%) as the electrical bias is increased from nearly below to above the open-circuit voltage. However, it is quenched (<0.1%) when the illumination is turned off or an electron acceptor material, [6,6]-phenyl C61-butyric acid methyl ester, is blended with P3HT as the active layer, suggesting that, in nature, the MC response is associated with the illumination and excitonic states. The annihilation of triplet excitons probably dominates the negative MC response.
UR - https://www.scopus.com/pages/publications/42349098341
UR - https://www.scopus.com/pages/publications/42349098341#tab=citedBy
U2 - 10.1063/1.2912011
DO - 10.1063/1.2912011
M3 - Article
AN - SCOPUS:42349098341
SN - 0003-6951
VL - 92
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 15
M1 - 153303
ER -