TY - JOUR
T1 - Flexible organic phototransistors based on a combination of printing methods
AU - Kim, Minseok
AU - Ha, Hyun Jun
AU - Yun, Hui Jun
AU - You, In Kyu
AU - Baeg, Kang Jun
AU - Kim, Yun Hi
AU - Ju, Byeong Kwon
N1 - Funding Information:
This work was supported by the IT R&D program of MKE/KEIT (Grant No. 10041416 , The core technology development of light and space adaptable new mode display for energy saving on 7inch and 2 W), and we thank the staff of KBSI for technical assistance. This research was partially supported by a grant (code no. 2011-0031639 ) from the Centre for Advanced Soft Electronics under the Global Frontier Research Program of the Ministry of Education, Science and Technology (MEST), a grant (code No. 13-12-N0101-41 ) from the Primary Research Program of Korea Electrotechnology Research Institute (KERI).
PY - 2014/11
Y1 - 2014/11
N2 - Highly photosensitive organic phototransistors (OPTs) are successfully demonstrated on a flexible substrate using all-solution process as well as a combination of printing methods which consist of roll-to-plate reverse offset printing (ROP), inkjet printing and bar coating. Excellent electrical switching characteristics are obtained from heterogeneous interfacial properties of the reverse-offset-printed silver nanoparticle electrode and the inkjet-printed p-channel polymeric semiconductor. In particular, the OPTs exhibit remarkably photosensitivity with a photo-to-dark current ratio exceeding 5 orders. This optoelectronic properties of the combinational printed OPTs are theoretically and experimentally studied, and found the comparable tendency. In addition, excellent mechanical stability is observed with up to 0.5% of strain applied to the OPTs. Hence, by manufactured with a combination of various graphic art printing methods such as roll-to-plate ROP, inkjet printing, and bar coating, these devices are very promising candidates for large-area and low-cost printed and flexible optoelectronics applications.
AB - Highly photosensitive organic phototransistors (OPTs) are successfully demonstrated on a flexible substrate using all-solution process as well as a combination of printing methods which consist of roll-to-plate reverse offset printing (ROP), inkjet printing and bar coating. Excellent electrical switching characteristics are obtained from heterogeneous interfacial properties of the reverse-offset-printed silver nanoparticle electrode and the inkjet-printed p-channel polymeric semiconductor. In particular, the OPTs exhibit remarkably photosensitivity with a photo-to-dark current ratio exceeding 5 orders. This optoelectronic properties of the combinational printed OPTs are theoretically and experimentally studied, and found the comparable tendency. In addition, excellent mechanical stability is observed with up to 0.5% of strain applied to the OPTs. Hence, by manufactured with a combination of various graphic art printing methods such as roll-to-plate ROP, inkjet printing, and bar coating, these devices are very promising candidates for large-area and low-cost printed and flexible optoelectronics applications.
KW - Field-effect transistors
KW - Organic phototransistors
KW - Organic semiconductors
KW - Printed electronics
KW - Reverse offset printing
UR - http://www.scopus.com/inward/record.url?scp=84906706882&partnerID=8YFLogxK
U2 - 10.1016/j.orgel.2014.07.041
DO - 10.1016/j.orgel.2014.07.041
M3 - Article
AN - SCOPUS:84906706882
VL - 15
SP - 2677
EP - 2684
JO - Organic Electronics: physics, materials, applications
JF - Organic Electronics: physics, materials, applications
SN - 1566-1199
IS - 11
ER -