TY - JOUR
T1 - Performance enhancement of organic thin-film transistors with improved copper phthalocyanine crystallization by inserting ultrathin pentacene buffer
AU - Huang, Wei
AU - Yu, Junsheng
AU - Yu, Xinge
AU - Li, Yu
AU - Zeng, Hongjuan
PY - 2012/8/31
Y1 - 2012/8/31
N2 - Organic thin-film transistors (OTFTs) with high crystallization copper phthalocyanine (CuPc) active layers were fabricated by inserting an ultrathin pentacene buffer layer between the dielectric and CuPc layers. Comparing with the OTFTs without a pentacene buffer layer, the charge carrier mobility of the OTFT with a buffer layer presented a much higher value of ∼ 0.20 cm2/V s. Meanwhile, by investigating the morphology of the CuPc active layer with an ultrathin pentacene buffer layer through scanning electron microscopy and X-ray diffraction, the high crystallization of the CuPc film with a larger grain size and less grain boundaries can be observed. As a result, the resistance of the conducting channel was decreased, leading to a performance improvement of the OTFTs.
AB - Organic thin-film transistors (OTFTs) with high crystallization copper phthalocyanine (CuPc) active layers were fabricated by inserting an ultrathin pentacene buffer layer between the dielectric and CuPc layers. Comparing with the OTFTs without a pentacene buffer layer, the charge carrier mobility of the OTFT with a buffer layer presented a much higher value of ∼ 0.20 cm2/V s. Meanwhile, by investigating the morphology of the CuPc active layer with an ultrathin pentacene buffer layer through scanning electron microscopy and X-ray diffraction, the high crystallization of the CuPc film with a larger grain size and less grain boundaries can be observed. As a result, the resistance of the conducting channel was decreased, leading to a performance improvement of the OTFTs.
KW - Buffer layer
KW - Copper phthalocyanine
KW - Crystallization
KW - Organic thin-film transistors
KW - Pentacene
UR - http://www.scopus.com/inward/record.url?scp=84864753326&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84864753326&origin=recordpage
U2 - 10.1016/j.tsf.2012.06.084
DO - 10.1016/j.tsf.2012.06.084
M3 - RGC 21 - Publication in refereed journal
SN - 0040-6090
VL - 520
SP - 6677
EP - 6680
JO - Thin Solid Films
JF - Thin Solid Films
IS - 21
ER -