| 초록 |
Organic electronic devices, such as organic light-emitting devices, organic field-effect transistors, and organic photodetectors, have been extensively studied because of their advantages for flexible devices as well as benefits due to the low temperature/solution processes. In particular, organic phototransistors have been recently spotlighted because they can deliver flexible optical sensors in various electronic devices including smart phone. Most organic phototransistors reported so far were fabricated using single materials, p-type or n-type organic semiconductors, as a channel layer. Recently, our group has initialized all-polymer phototransistors, which feature the bulk heterojunction (BHJ) light-sensing layers of p-type and n-type polymers, and demonstrated the enhanced performances due to the efficient charge separation by the BHJ structure. This presentation will show our recent efforts on all-polymer phototransistors that exhibit p-type and ambipolar sensing characteristics. |
