【摘 要】
：
As narrow band-gap semiconductiors,PbSe and PbS colloidal quantum dots(CQDs)are usually used in photovoltaic devices to improve the conversion efficiency fo
【机 构】
：
Beijing Key Lab of Nanophotonics and Ultrafine Optoelectronic Systems,School of Physics,Beijing Inst
【出 处】
：
The 6th International Conference on Nanoscience and Technolo
论文部分内容阅读
As narrow band-gap semiconductiors,PbSe and PbS colloidal quantum dots(CQDs)are usually used in photovoltaic devices to improve the conversion efficiency for their strong multiple exciton generation(MEG)effect,high bandgap tenability,charge mobility and its large Bohr exiton radius.Usually,ternary semiconductor materials can provide an better alternative approach for bandgap control in additional to the size-dependent quantum confinement effects,and it can provide better chemical and physical properties.In previous reports,solar cells based on ternary PbSxSe1-x have showed improved performance than those only based binary PbS and/or PbSe.On the other hand,few near-infrared photodetectors based on PbSxSe1-x colloidal quantum dots(CQDs)are reported.
其他文献
Covalent triazine frameworks(CTFs)[1] are an emerging class of organic polymeric networks.The combination of interesting features such as high porosity,crys
Negative index metamaterials(NIMs)are artificial structures with unique optical properties.[1,2] Until now,the method to experimental realize the NIMs is st
Bulk heterojunction(BHJ)solar cells comprising conjugated polymer donor and fullerene acceptor offer promising advantages such as low cost,light weight,and
In recent years,many new types of memory have been proposed to replace conventional flash memories.In these emerging memories,phase-change memory(PCM)has at
Quantum walks(QWs)have been implemented in integrated photonic waveguide arrays.Such array is stable,scalable,easy to fabricate and manipulate.Here we propo
Two-dimensional(2D)layered materials such as graphene,metal dichalcogenides,and topological insulators have attracted much attention due to their extraordin
Tetraalkylammonium-based poly(ionic liquid)s(PILs)are able to absorb particularly large amounts of CO2; thus are considered up-and-coming materials in appli
Organic-inorganic hybrid CH3NH3PbI3 perovskite solar cells have been investigated intensely in the past few years with efficiency exceeding 20%.[1] The subs
Thin-films often exhibit colorful fringes along equal thickness lines because of the interference between the reflected light from the interfaces.This pheno
Up-conversion as a nonlinear process for tuning excitation wavelength to lower wavelengths of emission has great applications especially in biomedical diagn