Photovoltaic(PV)technologies have been considered as one of the most promising low-cost alternatives of traditional fossil fuels.Crystalline silicon(c-Si)solar cells currently dominate the commercial PV market due to ...Photovoltaic(PV)technologies have been considered as one of the most promising low-cost alternatives of traditional fossil fuels.Crystalline silicon(c-Si)solar cells currently dominate the commercial PV market due to their robust manufacturing,excellent reliability and abundant raw materials.The costs of c-Si PVs have dropped significantly in the last decade,driving the global exponential growth in installations.However,for state-ofthe-art c-Si cells,the efficiency is approaching their practical efficiency limit of∼27%,leaving very limited space for improvement.To further drive down the costs of PV electricity,it is imperative to develop low-cost PV technologies that can further increase the power conversion efficiencies(PCEs)at the cell and module levels.展开更多
The design and construction of highly effective circularly polarized luminescence(CPL)-active materials has aroused considerable attention due to their widespread applications in sensors,optical devices,and asymmetric...The design and construction of highly effective circularly polarized luminescence(CPL)-active materials has aroused considerable attention due to their widespread applications in sensors,optical devices,and asymmetric synthesis.However,the exploration of novel CPL-active materials with high luminescence dissymmetry factor(glum)values is still a challenge.Herein,we describe a new approach for the preparation of supramolecular metallacycles with amplified CPL promoted by hierarchical self-assembly involving Pt···Pt interactions.Notably,the resultant metallacycles exhibited strong CPL signals with high glum values,while their corresponding precursors were CPL silent.The CPL amplification mechanism was comprehensively validated by ultravioletvisible absorption,emission spectroscopy,nuclear magnetic resonance spectroscopy,scanning electron microscopy,transmission electron microscopy,atomic force microscopy,coarse-grained molecular dynamics simulations,and timedependent density functional theory calculations.This work thus provides the first example of preparing highly effective CPL-active materials based on hierarchical self-assembly involving Pt···Pt interactions.展开更多
基金supported by Shanghai Pujiang Program(21PJ1400400)Shanghai Municipal Science and Technology Commission(22511103900)+1 种基金the Fundamental Research Funds for the Central Universities(2232023A-02)the National Natural Science Foundation of China(22173017).
基金financially supported by the National Natural Science Foundation of China (61974063 and U21A2076)the Natural Science Foundation of Jiangsu Province (BK20202008 and BK20190315)+2 种基金the Fundamental Research Funds for the Central Universities (0213/14380219, 0213/14380218, 0213/14380216, and 0205/14380252)the Research Funds for the Frontiers Science Center for Critical Earth Material Cycling, Nanjing Universitythe Program for Innovative Talents and Entrepreneur in Jiangsu
文摘Photovoltaic(PV)technologies have been considered as one of the most promising low-cost alternatives of traditional fossil fuels.Crystalline silicon(c-Si)solar cells currently dominate the commercial PV market due to their robust manufacturing,excellent reliability and abundant raw materials.The costs of c-Si PVs have dropped significantly in the last decade,driving the global exponential growth in installations.However,for state-ofthe-art c-Si cells,the efficiency is approaching their practical efficiency limit of∼27%,leaving very limited space for improvement.To further drive down the costs of PV electricity,it is imperative to develop low-cost PV technologies that can further increase the power conversion efficiencies(PCEs)at the cell and module levels.
基金supported by the National Natural Science Foundation of China(21922506,21871092,and 21603074)Shanghai Pujiang Program(18PJD015)+1 种基金the Fundamental Research Funds for the Central Universitiesthe Austrian Science Fund(M 2709-N28)for the financial support。
文摘The design and construction of highly effective circularly polarized luminescence(CPL)-active materials has aroused considerable attention due to their widespread applications in sensors,optical devices,and asymmetric synthesis.However,the exploration of novel CPL-active materials with high luminescence dissymmetry factor(glum)values is still a challenge.Herein,we describe a new approach for the preparation of supramolecular metallacycles with amplified CPL promoted by hierarchical self-assembly involving Pt···Pt interactions.Notably,the resultant metallacycles exhibited strong CPL signals with high glum values,while their corresponding precursors were CPL silent.The CPL amplification mechanism was comprehensively validated by ultravioletvisible absorption,emission spectroscopy,nuclear magnetic resonance spectroscopy,scanning electron microscopy,transmission electron microscopy,atomic force microscopy,coarse-grained molecular dynamics simulations,and timedependent density functional theory calculations.This work thus provides the first example of preparing highly effective CPL-active materials based on hierarchical self-assembly involving Pt···Pt interactions.
