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Improved color purity and efficiency of blue quantum dot light-emitting diodes
10.1016/j.orgel.2018.04.014 2018-04-09 Quantum dot light-emitting diodes (QLEDs) are attractive to be used for new generation displays since their advantages of high color saturation and emission efficiency. However, the wide-bandgap blue light-emitting quantum dots (QLEDs) suffer an undesirable e... |
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Exploring charge transfer processes and crystallization dynamics in donor-acceptor crystals
10.1016/j.orgel.2018.03.037 2018-04-05 Donor-acceptor crystals are of huge potential applications in the area of sensor, memory and radio frequency devices. In this work, we observed the stacking modes between poly (3-thiophene) and fullerene are mainly segregated-stacking and mixed-arrangement wi... |
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A method towards 100% internal quantum efficiency for all-inorganic cesium halide perovskite light-emitting diodes
10.1016/j.orgel.2018.04.007 2018-04-04 An efficient all-inorganic cesium halide perovskite light-emitting diode (PeLED) was demonstrated by utilizing a mixed perovskite film of CsPbBr3:4,5-di (9H-carbazol-9-yl) phthalonitrile (2CzPN) as the light-emitting layer, where 2CzPN was a thermally activat... |
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Impact of interface types on spin transport in heterostructures of graphene/hexagonal boron-nitride nanoribbons
10.1016/j.orgel.2018.04.006 2018-04-04 Using density functional theory in combination with non-equilibrium Green's functions, we investigate the spin transport in two heterostructures of graphene and hexagonal boron-nitride (h-BN) nanoribbons with C-B and C-N interfaces, respectively. Significant ... |
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Efficient and stable hole-conductor-free mesoscopic perovskite solar cells using SiO2 as blocking layer
10.1016/j.orgel.2018.04.008 2018-04-04 Efficient and stable hole-conductor-free mesoscopic perovskite solar cells were fabricated using SiO2 as blocking layer which was inserted between the top carbon electrode and bottom electron-transport-layer in the device. Power conversion efficiency of 13.09... |
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Regulating the polymer crystallize behavior via the synergistic additives towards high-performance bulk heterojunction solar cells
10.1016/j.orgel.2018.04.002 2018-04-03 In polymer solar cells (PSCs) which are typically processed from solution, the molecules inside the active layer accumulate disorderly, which greatly hinders the exciton dissociation and carrier transport, especially in thick active layers. Here, we propose a... |
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Insight into correlation between molecular length and exciton dissociation, charge transport and recombination in Polymer: Oligomer based solar cells
10.1016/j.orgel.2018.04.003 2018-04-03 Four fluorene-alt-di-2-thienyl-benzothiadiazole (FTBT) based oligomers with different number of repeated units are selected as electron acceptors in P3HT:oligomer solar cells. The effect of oligomer length on the phase separation behavior has been studied in ... |
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A narrow-bandgap donor polymer for highly efficient as-cast non-fullerene polymer solar cells with a high open circuit voltage
10.1016/j.orgel.2018.04.001 2018-04-03 A new narrow-bandgap copolymer PBFTT, based on 4,8-bis(5-(2-ethylhexyl)-4-fluorothiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene (BDT-2F) as donor unit and octyl-3-fluorothieno[3,4-b]thiophene-2-carboxylate (TT) as acceptor unit, was synthesized as donor material... |
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Highly efficient inverted organic light-emitting diodes with organic p-n junction as electron injection layer
10.1016/j.orgel.2018.03.047 2018-04-03 Organic p-n junction (PNJ) composing of PEDOT:PSS(MoO3)/Bphen:Cs2CO3 is introduced as electron injection layer (EIL) in the bottom-emission inverted organic light-emitting diodes (BIOLEDs). The devices with PNJ of PEDOT:PSS/Bphen:Cs2CO3 or MoO3/Bphen:Cs2CO3 a... |
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Efficient non-doped blue phosphorescent organic light-emitting devices by incorporating Ag-island nanostructures
10.1016/j.orgel.2018.03.049 2018-03-30 In this work, vacuum-evaporated Ag-island nanostructures were incorporated into the electron transporting layer (ETL) and their effects on the performance of non-doped blue phosphorescent organic light-emitting devices (PhOLEDs) using an ultrathin phosphoresc... |