| 초록 |
Soluble conjugated organic materials have received considerable attention because they can be processed in simpler and more cost-effective ways than their inorganic semiconductor counterparts. In semiconductors, the transport of holes and electrons are governed by the HOMO and LUMO energy levels. The energy levels of an organic semiconductor govern the efficiency of carrier injection and extraction, control the energy and electron transfer process at the heterojunction, and determine the intrinsic photophysical properties, such as absorption and emission. The opto-electronic properties of conjugated polymers can be effectively tuned by intramolecular charge transfer involving donor-acceptor interactions. The hybrization of HOMO located on the donor moiety with LUMO located on the acceptor moiety provides a means for tunning the electronic and optoelectronic properties in device applications, such as light emitting diodes, solar cells, field effect transistors |
