TY - JOUR
T1 - Electrochemical Stability and Ambipolar Charge Transport in Diketopyrrolopyrrole-Based Organic Materials
AU - Ray, Suman
AU - Panidi, Julianna
AU - Mukhopadhyay, Tushita
AU - Salzner, Ulrike
AU - Anthopoulos, Thomas D.
AU - Patil, Satish
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: S.R. thanks the University Grants Commission (UGC), New Delhi, for Dr. D. S. Kothari’s postdoctoral fellowship. S.P. thanks the Department of Science and Technology, New Delhi, India, for a Swarnajayanti fellowship and acknowledges financial support from UKRI Global Challenge Research Fund Project, SUNRISE (Grant EP/P032591/1). We sincerely acknowledge CENSE, IISc for the AFM, GIXRD, and UPS measurements.
PY - 2019/9/3
Y1 - 2019/9/3
N2 - An important strategy for realizing flexible complementary circuits with organic semiconductors is to achieve balanced ambipolar charge transport properties with reduced anisotropy. Here, we present a series of star-shaped diketopyrrolopyrrole (DPP)-based organic materials synthesized for improved intermolecular charge transport while retaining the ambipolar charge transport properties of their linear counterparts. Steady-state UV–visible spectroscopic studies confirm that the oligomers are highly aggregated in the thin film as evidenced from appearance of prominent vibronic features and red-shifted absorption bands. Ambipolar transport properties of these materials were verified in organic field-effect transistors (OFETs). The results show that the star-shaped DPP systems have the potential to outperform their linear counterparts in devices.
AB - An important strategy for realizing flexible complementary circuits with organic semiconductors is to achieve balanced ambipolar charge transport properties with reduced anisotropy. Here, we present a series of star-shaped diketopyrrolopyrrole (DPP)-based organic materials synthesized for improved intermolecular charge transport while retaining the ambipolar charge transport properties of their linear counterparts. Steady-state UV–visible spectroscopic studies confirm that the oligomers are highly aggregated in the thin film as evidenced from appearance of prominent vibronic features and red-shifted absorption bands. Ambipolar transport properties of these materials were verified in organic field-effect transistors (OFETs). The results show that the star-shaped DPP systems have the potential to outperform their linear counterparts in devices.
UR - http://hdl.handle.net/10754/661383
UR - https://pubs.acs.org/doi/10.1021/acsaelm.9b00394
U2 - 10.1021/acsaelm.9b00394
DO - 10.1021/acsaelm.9b00394
M3 - Article
SN - 2637-6113
VL - 1
SP - 2037
EP - 2046
JO - ACS Applied Electronic Materials
JF - ACS Applied Electronic Materials
IS - 10
ER -