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
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 - organic semiconductors
KW - self-assembled monolayers
KW - UPS
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 -