The Influence of Morphology on High‐Performance Polymer Field‐Effect Transistors

Abstract

Organic field-effect transistors (OFETs) are attracting attention because of their potential application in cheap, large-area, flexible electronic devices, such as bendable displays, complementary circuits, and radio-frequency identification tags (RFID). [1][2][3][4] To this end, polymer semiconductors are particularly well-suited, due to their mechanical flexibility and facile processing. However, OFETs have been hampered by very low charge-carrier mobilities, often less than 0.01 cm 2 V À1 s À1

Combinatorial Screening of Polymer:Fullerene Blends for Organic Solar Cells by Inkjet Printing

“…[ 6,7 ] An important advantage of conjugated polymers is that the polymers can be tailored to optimize the fi nal device properties, for example by adding side-chains to the polymer for an improved solubility or electron affi nity. [ 8 ] The possibility of altering the material properties and the use of cheap processing methods, such as spin-coating or inkjet printing, classify conjugated polymers as promising materials for smaller, fl exible, and, most importantly, cheaper devices for optoelectronic applications.…”

Benzothiadiazole[1,2-b:4,3-b′]dithiophene, a new ladder-type multifused block: Synthesis and photovoltaic application

“…The HOMO energy levels are estimated to be À5.65, À5.50, À5.44, À5.41, and À5.50 eV for the P1-P5, respectively ( Table 2). The low-lying HOMO energy levels suggest that the polymers are oxidatively stable hole transporting materials [37,38] and also are desired in BHJ solar cells as an approach to maximize the open circuit voltage (V OC ), which is known to be related to the difference in the HOMO level of the donor polymer and LUMO level of the acceptor.…”

Semiconducting Organic Molecular Materials

“…Interface quality and compatibility greatly influence the grain size and boundaries. Hence, numerous methods, including optimizing interface quality [7,41] film treatments (such as thermal or solvent annealing) [42,43] and other strategies [44,45] have been studied recently to control the morphology of organic thin films. For example, it is effective to tune the surface energy by self-assembled monolayers (SAMs) prior to the deposition of organic semiconductors to improve the interface compatibility.…”