Semiconducting Oligomer Lasers Developed via Crystal Engineering

我们已经研制出了发光场效应晶体管，在其中掺入了高质量的噻吩苯/苯撑共低聚物的板条晶体。利用这些器件，我们打算实现电流注入激光振荡。当该器件配备一维或二维谐振腔或衍射光栅时，我们观察到该器件的光谱窄化发射。光谱窄化发射可以看作是激光振荡的前兆现象。特别是，我们已经证实了伴随着异常狭窄的排放线的非常强烈的排放。

We have developed light-emitting field-effect transistors in which a high-quality slab crystal of thiophene/phenylene co-oligomer is incorporated. Using these devices we intended to achieve the current-injected laser oscillation. We observed spectrally-narrowed emissions from the devices when the said device was equipped with a one-dimensional or two-dimensional resonator or diffraction grating. The spectrally-narrowed emissions can be regarded as a precursor phenomenon of the laser oscillation. In particular, we have confirmed exceedingly intense emissions accompanied by an exceptionally narrowed emission lines.