Organic light-emitting transistors(OLETs)are miniaturized electroluminescent devices,and they simultaneously integrate the dual functionality of switching in organicfield-effect transistors and emission in organic ligh...Organic light-emitting transistors(OLETs)are miniaturized electroluminescent devices,and they simultaneously integrate the dual functionality of switching in organicfield-effect transistors and emission in organic light-emitting diodes,which have recently aroused interest from scientists for the next-generation of display applications[1–3].Notably,white organic light-emitting transistors(WOLETs)have gained much attention for their potential applications in sensors,switches,and light sources,including indoor lighting,street lighting andflood lighting[4].Moreover,the Commission Internationale de l’Elcairage(CIE)standard coordinates are precisely defined as(0.33,0.33)of pure white emission,providing a universal reference for evaluating white light accuracy and consistency across lighting and display technologies[5].To meet the requirements of high color-purity,most of the reported white emissive materials and WOLETs have been achieved by rational combination of red,green,blue for three primary colors or blue and orange for two complementary colors emitters[6],such as doping an emitter into an appropriate host and employing the multi-component active layers with a stacked configuration[7].Although a minority of doped electroluminescent devices have the capability of good exciton utilization to realize the white emission,the multi-component active layer is inherently prone to phase separation,which is harmful for the optoelectronic devices[4].Therefore.展开更多
基金supported by the National Natural Science Foundation of China(52233010,52103245,22021002,and 22305252)the CAS Project for Young Scientists in Basic Research(YSBR053)+4 种基金the Beijing National Laboratory for Molecular Sciences(BNLMS-CXXM-202012)China Postdoctoral Science Foundation(2023M733555)Postdoctoral Fellowship Program of CPSF(GZB20230771)the International Cooperation Program of the Chinese Academy of Sciences(121111KYSB20200004)The authors also acknowledge Dr.Xun Tang(Kyushu University)for the optical discussion and Zhenling Liu(Institute of Chemistry,Chinese Academy of Sciences)for the ESP calculated.
文摘Organic light-emitting transistors(OLETs)are miniaturized electroluminescent devices,and they simultaneously integrate the dual functionality of switching in organicfield-effect transistors and emission in organic light-emitting diodes,which have recently aroused interest from scientists for the next-generation of display applications[1–3].Notably,white organic light-emitting transistors(WOLETs)have gained much attention for their potential applications in sensors,switches,and light sources,including indoor lighting,street lighting andflood lighting[4].Moreover,the Commission Internationale de l’Elcairage(CIE)standard coordinates are precisely defined as(0.33,0.33)of pure white emission,providing a universal reference for evaluating white light accuracy and consistency across lighting and display technologies[5].To meet the requirements of high color-purity,most of the reported white emissive materials and WOLETs have been achieved by rational combination of red,green,blue for three primary colors or blue and orange for two complementary colors emitters[6],such as doping an emitter into an appropriate host and employing the multi-component active layers with a stacked configuration[7].Although a minority of doped electroluminescent devices have the capability of good exciton utilization to realize the white emission,the multi-component active layer is inherently prone to phase separation,which is harmful for the optoelectronic devices[4].Therefore.
