Studies of the non-isothermal decomposition of barium2,4,6-trinitroresorecinate monohydrate,Ba(TNR)·H 2 O,were carried out by means of TG-DTA,DSC and IR.The thermal decomposition mechanism and associated ki-netic...Studies of the non-isothermal decomposition of barium2,4,6-trinitroresorecinate monohydrate,Ba(TNR)·H 2 O,were carried out by means of TG-DTA,DSC and IR.The thermal decomposition mechanism and associated ki-netics were investigated.The kinetic parameters were obtained from an analysis of the DSC curves by integral and differential methods.The most probable kinetic model function of the dehydration reaction of Ba(TNR)·H 2 O was suggested by comparison of the kinetic parameters.展开更多
The rapid development of two-dimensional(2D)materials offers new opportunities for 2D ultra-thin excitonic solar cells(XSCs).The construction of van der Waals heterostructure(vdWH)is a recognised and effective method ...The rapid development of two-dimensional(2D)materials offers new opportunities for 2D ultra-thin excitonic solar cells(XSCs).The construction of van der Waals heterostructure(vdWH)is a recognised and effective method of integrating the properties of single-layer 2D materials,creating particularly superior performance.Here,the prospects of h-BP/h-BAs vdW heterostructures in 2D excitonic solar cells are assessed.We systematically investigate the electronic properties and optical properties of heterogeneous structures by using the density functional theory(DFT)and first-principles calculations.The results indicate that the heterogeneous structure has good optoelectronic properties,such as a suitable direct bandgap and excellent optical absorption properties.The calculation of the phonon spectrum also confirms the well-defined kinetic stability of the heterstructure.We design the heterogeneous structure as a model for solar cells,and calculate its solar cell power conversion efficiency which reaches up to 16.51%and is higher than the highest efficiency reported in organic solar cells(11.7%).Our work illustrates the potential of h-BP/h-BAs heterostructure as a candidate for high-efficiency 2D excitonic solar cells.展开更多
文摘Studies of the non-isothermal decomposition of barium2,4,6-trinitroresorecinate monohydrate,Ba(TNR)·H 2 O,were carried out by means of TG-DTA,DSC and IR.The thermal decomposition mechanism and associated ki-netics were investigated.The kinetic parameters were obtained from an analysis of the DSC curves by integral and differential methods.The most probable kinetic model function of the dehydration reaction of Ba(TNR)·H 2 O was suggested by comparison of the kinetic parameters.
基金Project supported by the National Natural Science Foundation of China(Grant No.62074053)the Natural Science Foundation of Henan Province,China(Grant Nos.202300410237 and 222300420587)+3 种基金the Program for Science&Technology Innovation Talents in Universities of Henan Province,China(Grant No.18HASTIT030)the Henan Overseas Expertise Introduction CenterforDiscipline Innovaremain tion,China(Grant No.CXJD2019005)the High Performance Computing Center of Henan Normal University,Chinathe Aid Program for Science and Technology Innovative Research Team of Zhengzhou Normal University,China.
文摘The rapid development of two-dimensional(2D)materials offers new opportunities for 2D ultra-thin excitonic solar cells(XSCs).The construction of van der Waals heterostructure(vdWH)is a recognised and effective method of integrating the properties of single-layer 2D materials,creating particularly superior performance.Here,the prospects of h-BP/h-BAs vdW heterostructures in 2D excitonic solar cells are assessed.We systematically investigate the electronic properties and optical properties of heterogeneous structures by using the density functional theory(DFT)and first-principles calculations.The results indicate that the heterogeneous structure has good optoelectronic properties,such as a suitable direct bandgap and excellent optical absorption properties.The calculation of the phonon spectrum also confirms the well-defined kinetic stability of the heterstructure.We design the heterogeneous structure as a model for solar cells,and calculate its solar cell power conversion efficiency which reaches up to 16.51%and is higher than the highest efficiency reported in organic solar cells(11.7%).Our work illustrates the potential of h-BP/h-BAs heterostructure as a candidate for high-efficiency 2D excitonic solar cells.
