A new interlayer is successfully used to be a universal carrier switch, developing high-performance hybrid white organic light-emitting diodes （WOLEDs）. By dint of this interlayer, the two-color hybrid WOLED shows a...A new interlayer is successfully used to be a universal carrier switch, developing high-performance hybrid white organic light-emitting diodes （WOLEDs）. By dint of this interlayer, the two-color hybrid WOLED shows a maximum total current efficiency （CE） and power efficiency （PE） of 48.1 cd/A and 37.6 Im/W, respectively, while the three-color hybrid WOLED shows a maximum total CE and PE of 33.8 cd/A and 25.7Im/W, respectively. The color rendering index of the three-color hybrid WOLEDs are ≥ 75, which is already a sufficient level for many commercial lighting applications. In addition, both the two-color and three-color hybrid WOLEDs show low efficiency roll-off and stable color. Furthermore, devices with the new interlayer show much higher performance than devices with the most commonly used 4,4-N,N-dicarbazolebiphenyl and N,N＇-di（naphthalene-l-yl）-N,N＇- diphenyl-benzidine interlayers.展开更多
In this paper, we investigate all-optical packet switching using a multi-wavelength mutual injection-locked Fabry-Perot laser diode. We observe error-free packet-switching of a 10 Gb/s signal with an extinction ratio ...In this paper, we investigate all-optical packet switching using a multi-wavelength mutual injection-locked Fabry-Perot laser diode. We observe error-free packet-switching of a 10 Gb/s signal with an extinction ratio of 16.9.展开更多
Controlling ion transport in nanoconfined spaces is a key task for the creation of smart nanofluidic devices.In this work,redox-active polypyrrole （PPy） polymers are introduced into anodic aluminum oxide （AAO） nan...Controlling ion transport in nanoconfined spaces is a key task for the creation of smart nanofluidic devices.In this work,redox-active polypyrrole （PPy） polymers are introduced into anodic aluminum oxide （AAO） nanochannels to form smart unipolar nanofluidic diodes （UNDs） for the first time.The ionic transport behavior of the present polypyrrole-engineered UNDs can be controlled through the redox reactions of PPy.Under an applied oxidation potential,conductive PPy exhibits several redox states carrying different charges,following the formation of polarons and bipolarons with different oxidation states.Combined with the asymmetric distribution of PPy in the AAO nanochannels,the UNDs investigated here exhibit redox-switchable ion rectification and ion-gating properties.The influence of the charge asymmetry of the UNDs on their ionic transport behavior is assessed by precisely controlling the length of oxidized PPy segments in the AAO nanochannels and by carrying out theoretical simulations based on the Poisson and Nernst-Planck （PNP） equations.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No 61076066the Innovation Project of Science and Technology Plan Projects of Shaanxi Province under Grant No 2011KTCQ01-09
文摘A new interlayer is successfully used to be a universal carrier switch, developing high-performance hybrid white organic light-emitting diodes （WOLEDs）. By dint of this interlayer, the two-color hybrid WOLED shows a maximum total current efficiency （CE） and power efficiency （PE） of 48.1 cd/A and 37.6 Im/W, respectively, while the three-color hybrid WOLED shows a maximum total CE and PE of 33.8 cd/A and 25.7Im/W, respectively. The color rendering index of the three-color hybrid WOLEDs are ≥ 75, which is already a sufficient level for many commercial lighting applications. In addition, both the two-color and three-color hybrid WOLEDs show low efficiency roll-off and stable color. Furthermore, devices with the new interlayer show much higher performance than devices with the most commonly used 4,4-N,N-dicarbazolebiphenyl and N,N＇-di（naphthalene-l-yl）-N,N＇- diphenyl-benzidine interlayers.
文摘In this paper, we investigate all-optical packet switching using a multi-wavelength mutual injection-locked Fabry-Perot laser diode. We observe error-free packet-switching of a 10 Gb/s signal with an extinction ratio of 16.9.
基金This work was supported by National Natural Science Foundation of China （Nos. 21571011, 21641006）, National Basic Research Program of China （No. 2014CB931803）, Fundamental Research Funds for the Central Universities （N0s. YWF-15-HHXY-019, YWF-16- JCTD-B-03） and China Postdoctoral Science Foundation Grant （No. 2015M580035）.
文摘Controlling ion transport in nanoconfined spaces is a key task for the creation of smart nanofluidic devices.In this work,redox-active polypyrrole （PPy） polymers are introduced into anodic aluminum oxide （AAO） nanochannels to form smart unipolar nanofluidic diodes （UNDs） for the first time.The ionic transport behavior of the present polypyrrole-engineered UNDs can be controlled through the redox reactions of PPy.Under an applied oxidation potential,conductive PPy exhibits several redox states carrying different charges,following the formation of polarons and bipolarons with different oxidation states.Combined with the asymmetric distribution of PPy in the AAO nanochannels,the UNDs investigated here exhibit redox-switchable ion rectification and ion-gating properties.The influence of the charge asymmetry of the UNDs on their ionic transport behavior is assessed by precisely controlling the length of oxidized PPy segments in the AAO nanochannels and by carrying out theoretical simulations based on the Poisson and Nernst-Planck （PNP） equations.
