The electrical and light-emitting behaviors of electroluminescent cells,which consist of naphthoylimide(NPL)as emitting layer and poly(3-octylthiophene)(P3OT)doped with poly(N-vinylcarbazoe)(PVK)as hole transport laye...The electrical and light-emitting behaviors of electroluminescent cells,which consist of naphthoylimide(NPL)as emitting layer and poly(3-octylthiophene)(P3OT)doped with poly(N-vinylcarbazoe)(PVK)as hole transport layer sandwiched between indium-tin-oxide(ITO)and aluminum electrode,have been studied.The mixed polymer(P3OT:PVK)layer and the emitting layer were deposited by spin coating and by vacuum deposition respectively.It was found that the visible blue emission could be observed from the cells at low bias voltage.And when the ITO substrate was cooled to near the liquid N_(2) temperature during the deposition of NPL emitting layer,the brightness of the cell increased.It was confirmed that holes could be easily injected into NPL layer with deposition temperature decreased.展开更多
In this letter,we report a novel phenomenon of photoisomerization-induced changes in liquid crystalline azobenzene polymers P12 Langmuir-Blodgette monolayer deposited on gold film by irradiating the monolayer with UV(...In this letter,we report a novel phenomenon of photoisomerization-induced changes in liquid crystalline azobenzene polymers P12 Langmuir-Blodgette monolayer deposited on gold film by irradiating the monolayer with UV(360nm)and blue(450nm)lights,which was investigated by surface plasmon resonance technique.It has been shown that it is possible to switch the refractive indices reversibly by irradiating these films with light of appropriate wavelength.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No.69371032.
文摘The electrical and light-emitting behaviors of electroluminescent cells,which consist of naphthoylimide(NPL)as emitting layer and poly(3-octylthiophene)(P3OT)doped with poly(N-vinylcarbazoe)(PVK)as hole transport layer sandwiched between indium-tin-oxide(ITO)and aluminum electrode,have been studied.The mixed polymer(P3OT:PVK)layer and the emitting layer were deposited by spin coating and by vacuum deposition respectively.It was found that the visible blue emission could be observed from the cells at low bias voltage.And when the ITO substrate was cooled to near the liquid N_(2) temperature during the deposition of NPL emitting layer,the brightness of the cell increased.It was confirmed that holes could be easily injected into NPL layer with deposition temperature decreased.
基金Supported by the National Natural Science Foundation of China under Grant No.39400033.
文摘In this letter,we report a novel phenomenon of photoisomerization-induced changes in liquid crystalline azobenzene polymers P12 Langmuir-Blodgette monolayer deposited on gold film by irradiating the monolayer with UV(360nm)and blue(450nm)lights,which was investigated by surface plasmon resonance technique.It has been shown that it is possible to switch the refractive indices reversibly by irradiating these films with light of appropriate wavelength.
