TY - JOUR
T1 - Benzyl viologen as an n-type dopant for organic semiconductors
AU - Huseynova, Gunel
AU - Shrestha, Nabeen K.
AU - Xu, Yong
AU - Shin, Eul Yong
AU - Park, Won Tae
AU - Ji, Dongseob
AU - Noh, Yong Young
N1 - Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/11
Y1 - 2018/11
N2 - This paper reports an n-type dopant, neutral benzyl viologen (BV0), for organic semiconductors and their application as active layers in organic field-effect transistors (OFETs). BV0 is blended in four commonly used n-type and ambipolar conjugated polymer solutions as charge transfer dopant. Electron mobility increased markedly to ∼10−1 cm2 V-1 s-1 from ∼10−3 cm2V−1s−1 for BV0 doped (6.7%v/v) ambipolar diketopyrrolopyrrole-thieno [3,2-b]thiophene (DPPT-TT) OFETs; whereas, only decreased off current was observed in BV0 doped (6.7%v/v) n-type OFETs based on strong electron transport polymers, including poly [[N, N 9-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,59-(2,29-bithiophene)] (P(NDI2OD-T2)), poly{2,5-bis(2-dodecylhexadecyl)-3,6-di(thiophen-2-yl)pyrrolo-[3,4-c]pyrrole-1,4(2H, 5H)-dione-alt-(E)-1,2-bis(3-cyanothiophen-2-yl)ethene} (2DPP-2CNTVT) and poly{2,5-bis(7-dodecylhenicosyl)-3,6-di(thiophen-2-yl)pyrrolo-[3,4-c]pyrrole-1,4(2H, 5H)-dione-alt-(E)-1,2-bis(3-cyanothiophen-2-yl)ethene (7DPP-2CNTVT). This indicates that BV0 doping efficiency is strongly dependent on conjugated polymer structural differences and transport profiles as well as the interaction between their molecules and BV0 during the doping process.
AB - This paper reports an n-type dopant, neutral benzyl viologen (BV0), for organic semiconductors and their application as active layers in organic field-effect transistors (OFETs). BV0 is blended in four commonly used n-type and ambipolar conjugated polymer solutions as charge transfer dopant. Electron mobility increased markedly to ∼10−1 cm2 V-1 s-1 from ∼10−3 cm2V−1s−1 for BV0 doped (6.7%v/v) ambipolar diketopyrrolopyrrole-thieno [3,2-b]thiophene (DPPT-TT) OFETs; whereas, only decreased off current was observed in BV0 doped (6.7%v/v) n-type OFETs based on strong electron transport polymers, including poly [[N, N 9-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,59-(2,29-bithiophene)] (P(NDI2OD-T2)), poly{2,5-bis(2-dodecylhexadecyl)-3,6-di(thiophen-2-yl)pyrrolo-[3,4-c]pyrrole-1,4(2H, 5H)-dione-alt-(E)-1,2-bis(3-cyanothiophen-2-yl)ethene} (2DPP-2CNTVT) and poly{2,5-bis(7-dodecylhenicosyl)-3,6-di(thiophen-2-yl)pyrrolo-[3,4-c]pyrrole-1,4(2H, 5H)-dione-alt-(E)-1,2-bis(3-cyanothiophen-2-yl)ethene (7DPP-2CNTVT). This indicates that BV0 doping efficiency is strongly dependent on conjugated polymer structural differences and transport profiles as well as the interaction between their molecules and BV0 during the doping process.
KW - Benzyl viologen
KW - Conjugated polymer
KW - N-type dopant
KW - Organic field-effect transistor
UR - http://www.scopus.com/inward/record.url?scp=85049030601&partnerID=8YFLogxK
U2 - 10.1016/j.orgel.2018.06.033
DO - 10.1016/j.orgel.2018.06.033
M3 - Article
AN - SCOPUS:85049030601
SN - 1566-1199
VL - 62
SP - 572
EP - 580
JO - Organic Electronics
JF - Organic Electronics
ER -