TY - JOUR
T1 - S,N-Heteroacene-Based Copolymers for Highly Efficient Organic Field Effect Transistors and Organic Solar Cells
T2 - Critical Impact of Aromatic Subunits in the Ladder π-System
AU - Chung, Chin Lung
AU - Chen, Hsieh Chih
AU - Yang, Yun Siou
AU - Tung, Wei Yao
AU - Chen, Jian Wei
AU - Chen, Wen Chang
AU - Wu, Chun Guey
AU - Wong, Ken Tsung
N1 - Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/2/21
Y1 - 2018/2/21
N2 - Three novel donor-acceptor alternating polymers containing ladder-type pentacyclic heteroacenes (PBo, PBi, and PT) are synthesized, characterized, and further applied to organic field effect transistors (OFETs) and polymer solar cells. Significant aspects of quinoidal characters, electrochemical properties, optical absorption, frontier orbitals, backbone coplanarity, molecular orientation, charge carrier mobilities, morphology discrepancies, and the corresponding device performances are notably different with various heteroarenes. PT exhibits a stronger quinoidal mesomeric structure, linear and coplanar conformation, smooth surface morphology, and better bimodal crystalline structures, which is beneficial to extend the π-conjugation and promotes charge transport via 3-D transport pathways and in consequence improves overall device performances. Organic photovoltaics based on the PT polymer achieve a power conversion efficiency of 6.04% along with a high short-circuit current density (JSC) of 14.68 mA cm-2, and a high hole mobility of 0.1 cm2 V-1 s-1 is fulfilled in an OFET, which is superior to those of its counterparts, PBi and PBo.
AB - Three novel donor-acceptor alternating polymers containing ladder-type pentacyclic heteroacenes (PBo, PBi, and PT) are synthesized, characterized, and further applied to organic field effect transistors (OFETs) and polymer solar cells. Significant aspects of quinoidal characters, electrochemical properties, optical absorption, frontier orbitals, backbone coplanarity, molecular orientation, charge carrier mobilities, morphology discrepancies, and the corresponding device performances are notably different with various heteroarenes. PT exhibits a stronger quinoidal mesomeric structure, linear and coplanar conformation, smooth surface morphology, and better bimodal crystalline structures, which is beneficial to extend the π-conjugation and promotes charge transport via 3-D transport pathways and in consequence improves overall device performances. Organic photovoltaics based on the PT polymer achieve a power conversion efficiency of 6.04% along with a high short-circuit current density (JSC) of 14.68 mA cm-2, and a high hole mobility of 0.1 cm2 V-1 s-1 is fulfilled in an OFET, which is superior to those of its counterparts, PBi and PBo.
KW - organic field effect transistors
KW - organic solar cells
KW - pentacyclic heteroacenes
KW - quinoidal
KW - semi-ladder-type polymers
UR - http://www.scopus.com/inward/record.url?scp=85042525174&partnerID=8YFLogxK
U2 - 10.1021/acsami.7b15584
DO - 10.1021/acsami.7b15584
M3 - 期刊論文
C2 - 29377665
AN - SCOPUS:85042525174
SN - 1944-8244
VL - 10
SP - 6471
EP - 6483
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 7
ER -