The lead halide-based perovskites,for instance,CH3NH3PbX3 and CsPbX3（X = Cl,Br,I）,have received a lot of attention.Compared with bulk materials,low-dimensional perovskites have demonstrated a range of unique optical...The lead halide-based perovskites,for instance,CH3NH3PbX3 and CsPbX3（X = Cl,Br,I）,have received a lot of attention.Compared with bulk materials,low-dimensional perovskites have demonstrated a range of unique optical,electrical and mechanical properties,which enable wide applications in solar cells,lasers and other optoelectronic devices.In this paper,we provide a summary of the research progress of the low-dimensional perovskites in recent years,from synthesis methods,basic properties to their optoelectronic applications.展开更多
The global water scarcity and deteriorating environment call for the development of environmentally friendly water treatment technologies.Solar-driven evaporation,well-known as a critical step of water cycles,provides...The global water scarcity and deteriorating environment call for the development of environmentally friendly water treatment technologies.Solar-driven evaporation,well-known as a critical step of water cycles,provides a natural inspiration for water treatment and purification with a minimized carbon footprint.The emergence of interfacial solar vapor generation enabled through carefully tailored materials design in recent years offers an effective approach to enhance solar evaporation,with unique thermodynamic and kinetic advantages.Thermodynamically,by localizing absorbed solar energy at the water surface to avoid thermal dissipation into the entire body of water,high solar vapor transfer efficiency can be achieved.Kinetically,because of reduced thermal mass,a short response time of vapor generation and fast ramping of vapor temperature can be expected.In this perspective review,we start by exhibiting the structural designs of interfacial solar vapor generators to improve the energy transfer efficiency and evaporation rate:first,tuning optical structures to improve the light absorption;second,designing a two-dimensional water path and bioinspired structures to reduce the heat loss;third,harvesting environmental energy as an extra energy input to further increase the evaporation rate.Then,we demonstrate the intrinsic thermodynamic and kinetic advantages of interfacial solar evaporation for various applications.On the thermodynamic side,low energy loss and a high evaporation rate enable effective desalination and water treatment.While on the kinetic side,quick-response and high-temperature steam generation has direct implications in fields like sterilization and power generation.In the end,we briefly conclude the main challenges in fundamental and technical aspects as well as discuss various promising pathways for future development.展开更多
基金supported by the National Key Research and Development Programme of China(2022YFA1404704 and 2020YFA0406104)the National Natural Science Foundation of China(52002168,12022403,11874211,62134009,62121005,and 61735008)+2 种基金Excellent Research Programme of Nanjing University(ZYJH005)the Fundamental Research Funds for the Central Universities(021314380184,021314380208,021314380190,021314380140,and 021314380150)State Key Laboratory of New Textile Materials and Advanced Processing Technologies(Wuhan Textile University,No.FZ2022011).
基金Project jointly supported by the State Key Program for Basic Research of China(No.2015CB659300)the National Natural Science Foundation of China(Nos.11321063,11574143)+2 种基金the Natural Science Foundation of Jiangsu Province(Nos.BK20150056,BK20151079)the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)the Fundamental Research Funds for the Central Universities
文摘The lead halide-based perovskites,for instance,CH3NH3PbX3 and CsPbX3（X = Cl,Br,I）,have received a lot of attention.Compared with bulk materials,low-dimensional perovskites have demonstrated a range of unique optical,electrical and mechanical properties,which enable wide applications in solar cells,lasers and other optoelectronic devices.In this paper,we provide a summary of the research progress of the low-dimensional perovskites in recent years,from synthesis methods,basic properties to their optoelectronic applications.
基金supported by the National Key Research and Development Program of China(No.2017YFA0205700)the National Natural Science Foundation of China(Nos.12022403,51925204,11874211,61735008,52002168)the Program for Innovative Talents and Entrepreneur in Jiangsu Province,and the Fundamental Research Funds for the Central Universities(Nos.021314380150,021314380140).
文摘The global water scarcity and deteriorating environment call for the development of environmentally friendly water treatment technologies.Solar-driven evaporation,well-known as a critical step of water cycles,provides a natural inspiration for water treatment and purification with a minimized carbon footprint.The emergence of interfacial solar vapor generation enabled through carefully tailored materials design in recent years offers an effective approach to enhance solar evaporation,with unique thermodynamic and kinetic advantages.Thermodynamically,by localizing absorbed solar energy at the water surface to avoid thermal dissipation into the entire body of water,high solar vapor transfer efficiency can be achieved.Kinetically,because of reduced thermal mass,a short response time of vapor generation and fast ramping of vapor temperature can be expected.In this perspective review,we start by exhibiting the structural designs of interfacial solar vapor generators to improve the energy transfer efficiency and evaporation rate:first,tuning optical structures to improve the light absorption;second,designing a two-dimensional water path and bioinspired structures to reduce the heat loss;third,harvesting environmental energy as an extra energy input to further increase the evaporation rate.Then,we demonstrate the intrinsic thermodynamic and kinetic advantages of interfacial solar evaporation for various applications.On the thermodynamic side,low energy loss and a high evaporation rate enable effective desalination and water treatment.While on the kinetic side,quick-response and high-temperature steam generation has direct implications in fields like sterilization and power generation.In the end,we briefly conclude the main challenges in fundamental and technical aspects as well as discuss various promising pathways for future development.
