For preventing and extinguishing the spontaneous combustion of coal seam, based on the importance for sealing air leakage channels in roadway, developed a material of light-paste for coalmine, and research its ingredi...For preventing and extinguishing the spontaneous combustion of coal seam, based on the importance for sealing air leakage channels in roadway, developed a material of light-paste for coalmine, and research its ingredient, proportion and performance. The result indicates that the component ratio of the material is which PB exciting agent is 20%, complex reinforcing agent is 2%, complex expansion agent is 1%, and A-material is 77%. The performances of compressive strength, swelling ratio and expansion time are optimum. The light-paste material can effectively seal air leakage channels for preventing and extinguishing the spontaneous combustion of coal seam in coalmine.展开更多
Persistent luminescence refers to the phenomenon whereby luminescence remains after excitation ceases.In the past few decades,various kinds of persistent luminescent materials have been developed and widely employed i...Persistent luminescence refers to the phenomenon whereby luminescence remains after excitation ceases.In the past few decades,various kinds of persistent luminescent materials have been developed and widely employed in numerous applications,such as security signs,medical diagnostics and photocatalysis.Persistent luminescent materials offer distinctive advantages for biomedical applications,especially for bioimaging,as they can efficiently avoid autofluorescence and tissue-scattered light interference[1].展开更多
Light absorber is critical to the further applications of thin film solar cells. Here, we report a facile solution-processed method with an annealing temperature below250°C to fabricate Ag8 SnS6(ATS) light absorb...Light absorber is critical to the further applications of thin film solar cells. Here, we report a facile solution-processed method with an annealing temperature below250°C to fabricate Ag8 SnS6(ATS) light absorber for thin film solar cells. After optimization, the ATS-based thin film solar cells exhibited a reproducible power conversion efficiency(PCE) of about 0.25% and an outstanding long-term stability with 90% of the initial PCE retained after a more than 1,000 h degradation test. This research revealed the potential application of ATS as an earth-abundant, low toxic and chemically stable light absorber in thin film solar cells.展开更多
Luminescent materials with room-temperature phosphorescence(RTP)have drawn tremendous attention due to their remarkable advantages,such as long emission wavelength and lifetime,large Stokes shift,and high signal-noise...Luminescent materials with room-temperature phosphorescence(RTP)have drawn tremendous attention due to their remarkable advantages,such as long emission wavelength and lifetime,large Stokes shift,and high signal-noise ratio.Currently,most RTP materials are inorganics or organometallic complexes containing expensive and toxic noble metals.To promote the development of the field of RTP,it is necessary and important to design and prepare metal-free RTP materials because of their potential applications in molecular switches,anti-counterfeiting,chemical sensors and biological imaging,etc.[1].展开更多
基金Supported by the National Natural Science Foundation of China （1097178） the Project of Creative Team by the Mimstry of Education of China （IRT0856） the Natural Science Foundation of the Education Department of Shaanxi Province （09JK590）
文摘For preventing and extinguishing the spontaneous combustion of coal seam, based on the importance for sealing air leakage channels in roadway, developed a material of light-paste for coalmine, and research its ingredient, proportion and performance. The result indicates that the component ratio of the material is which PB exciting agent is 20%, complex reinforcing agent is 2%, complex expansion agent is 1%, and A-material is 77%. The performances of compressive strength, swelling ratio and expansion time are optimum. The light-paste material can effectively seal air leakage channels for preventing and extinguishing the spontaneous combustion of coal seam in coalmine.
文摘Persistent luminescence refers to the phenomenon whereby luminescence remains after excitation ceases.In the past few decades,various kinds of persistent luminescent materials have been developed and widely employed in numerous applications,such as security signs,medical diagnostics and photocatalysis.Persistent luminescent materials offer distinctive advantages for biomedical applications,especially for bioimaging,as they can efficiently avoid autofluorescence and tissue-scattered light interference[1].
基金financially supported by the National High Technology Research and Development Program of China(2015AA050602)the Project of Science and Technology Service(STS)Network Initiative,Chinese Academy of Sciences(KFJ-SW-STS-152)
文摘Light absorber is critical to the further applications of thin film solar cells. Here, we report a facile solution-processed method with an annealing temperature below250°C to fabricate Ag8 SnS6(ATS) light absorber for thin film solar cells. After optimization, the ATS-based thin film solar cells exhibited a reproducible power conversion efficiency(PCE) of about 0.25% and an outstanding long-term stability with 90% of the initial PCE retained after a more than 1,000 h degradation test. This research revealed the potential application of ATS as an earth-abundant, low toxic and chemically stable light absorber in thin film solar cells.
文摘Luminescent materials with room-temperature phosphorescence(RTP)have drawn tremendous attention due to their remarkable advantages,such as long emission wavelength and lifetime,large Stokes shift,and high signal-noise ratio.Currently,most RTP materials are inorganics or organometallic complexes containing expensive and toxic noble metals.To promote the development of the field of RTP,it is necessary and important to design and prepare metal-free RTP materials because of their potential applications in molecular switches,anti-counterfeiting,chemical sensors and biological imaging,etc.[1].
