TY - JOUR
T1 - High Sensitivity Tuning of Work Function of Self-Assembled Monolayers Modified Electrodes Using Vacuum Ultraviolet Treatment
AU - Tantitarntong, Porraphon
AU - Zalar, Peter
AU - Matsuhisa, Naoji
AU - Nakano, Kyohei
AU - Lee, Sunghoon
AU - Yokota, Tomoyuki
AU - Tajima, Keisuke
AU - Someya, Takao
N1 - Funding Information:
The author thank the School of Engineering, University of Tokyo, for its financial support. N.M. is supported by Advanced Leading Graduate Course for Photon Science (ALPS) and the JSPS research fellowship for young scientists. The authors are grateful to Dr. David Ordinario and Hiroaki Jinno for their help with English correction and fruitful discussions.
Funding Information:
*E-mail: someya@ee.t.u-tokyo.ac.jp. ORCID Porraphon Tantitarntong: 0000-0001-9723-9787 Kyohei Nakano: 0000-0003-2493-2817 Sunghoon Lee: 0000-0002-3592-388X Tomoyuki Yokota: 0000-0003-1546-8864 Keisuke Tajima: 0000-0003-1590-2640 Takao Someya: 0000-0003-3051-1138 Present Addresses §P.Z. is currently at Holst Centre/TNO, High Tech Campus 31, 5656 AE Eindhoven, The Netherlands ⊥N.M. is currently at School of Materials Science and Engineering, Nanyang Technological University, Block N4.1, 50 Nanyang Avenue, 639798, Singapore Funding This work was financially supported by JST ERATO Grant JPMJER1105, Japan. Notes The authors declare no competing financial interest.
Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/8/30
Y1 - 2017/8/30
N2 - We demonstrate systematic work function tuning of thiol-based SAM-modified gold electrodes with high controllability and sensitivity as high as 0.05 eV using vacuum ultraviolet technique (VUV). Under different irradiation times, both work function and wettability of the metal surface is modified. Fine tuning of the electrode work function is demonstrated by observable changes in the reverse current of a polymer Schottky diode. Additionally, the change in SAM chemical functionality validates the work function changes of VUV-irradiated electrodes. Our selective work function patterning on a single Au electrode via VUV could also reduce the required fabrication steps for more complex circuits.
AB - We demonstrate systematic work function tuning of thiol-based SAM-modified gold electrodes with high controllability and sensitivity as high as 0.05 eV using vacuum ultraviolet technique (VUV). Under different irradiation times, both work function and wettability of the metal surface is modified. Fine tuning of the electrode work function is demonstrated by observable changes in the reverse current of a polymer Schottky diode. Additionally, the change in SAM chemical functionality validates the work function changes of VUV-irradiated electrodes. Our selective work function patterning on a single Au electrode via VUV could also reduce the required fabrication steps for more complex circuits.
KW - UPS
KW - organic semiconductors
KW - self-assembled monolayers
KW - vacuum ultraviolet
KW - work function tuning
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U2 - 10.1021/acsami.7b09756
DO - 10.1021/acsami.7b09756
M3 - Article
C2 - 28809464
AN - SCOPUS:85028682832
VL - 9
SP - 28151
EP - 28156
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
SN - 1944-8244
IS - 34
ER -