【摘 要】
：
The influence of H2O and O2 on the performances of Mg-doped zinc oxide (ZnMgO) and ZnMgO-based inverted quantum-dot light-emitting diodes (QLEDs) are studied.With the involvement of H2O from ambience,ZnMgO exhibits a high conductivity,whereas the resultan
【机 构】
：
Guangdong University Key Lab for Advanced Quantum Dot Displays and Lighting,Shenzhen Key Lab for Adv
论文部分内容阅读
The influence of H2O and O2 on the performances of Mg-doped zinc oxide (ZnMgO) and ZnMgO-based inverted quantum-dot light-emitting diodes (QLEDs) are studied.With the involvement of H2O from ambience,ZnMgO exhibits a high conductivity,whereas the resultant QLEDs show a low efficiency.The efficiency of QLEDs can be enhanced by annealing ZnMgO in H2O-free glovebox;however,the uniformity and the current of the devices are degraded due to the presence of O2,which adsorbs on the surface of ZnMgO and captures the free electrons of ZnMgO.By exposing the devices with ultraviolet (UV) irradiation,the adsorbed O2 can be released,consequently leading to the increase of driving current.Our work discloses the influence of the annealing ambience on the conductivity of ZnMgO,and reveals the interaction of H2O/O2 and UV with the ZnMgO and its effect on the performance of the resultant inverted QLEDs,which could help the community to better understand the mechanisms of ZnMgO-based QLEDs.
其他文献
As the growing criterion of electromagnetic wave (EMW)absorption materials,micro/nano-scale magnetic materials are drawing more and more attention for their unique features compared to bulky absorbers.Generally,the complex permeability of micro/nano-scale
Due to the enhanced ambient structural stability and excellent optoelectronic properties,all-inorganic metal halide perovskite nanowires have become one of the most attractive candidates for flexible electronics,photovoltaics and optoelectronics.Their ela
Perovskite quantum dots (PQDs) require ligands on their surfaces to passivate defects and prevent aggregation.However,the ligands construct the interface relationship between the PQDs,which may seriously hinder the carrier transport.Hence,we propose a mol
Safe and long lifespan batteries facilitate the development of portable electronics and electric vehicles.Owing to the low-cost,naturally abundance,and trivalent charge carrier of aluminum with the highest theoretical volumetric capacity,rechargeable aque
Ni/ZnO nano-sponges have been successfully synthesized through optimized annealing of Ni/Zn-based organic framework(Ni/Zn-MOF).The annealed MOF provides the stable carbon structure with 3D interconnection and prevents structural collapse during the chargi
Ensemble and single particle studies of the excitation power density (P)-dependent upconversion luminescence (UCL) of core and core-shell β-NaYF4:Yb,Er upconversion nanoparticles (UCNPs) doped with 20％ Yb3+ and 1％ or 3％ Er3+ performed over a P regime of 6
A series of bimetallic nickel cobalt sulfides with hierarchical micro/nano architectures were fabricated via a facile synthesis strategy of bimetallic micro/nano structure precursor construction-anion exchange via solvothermal method.Among the nickel coba
Two-dimensional (2D) lead halide perovskites nanostructures have drawn great fundamental interest and displayed excellent properties for various optoelectronic applications.However,the toxicity of lead remains a concern for their large-scale utilizations.
Hybrid organolead halide perovskites have attracted tremendous attention due to their recent success as high efficiency solar cell materials and their fascinating material properties uniquely suitable for optoelectronic devices.However,the poor ambient an
Miniaturized mobile electronic devices have aroused great attention due to their convenience to daily life.However,they still face a problem that power supply from the conventional cell needs to be regularly charged or replaced.Portable electricity supply