Ordered macroporous titania photonic crystals （PCs） and photonic balls were fabricated by functional modified polymer colloidal crystals. The TiO2 PCs and balls formed through this method exhibit no cracks and lacun...Ordered macroporous titania photonic crystals （PCs） and photonic balls were fabricated by functional modified polymer colloidal crystals. The TiO2 PCs and balls formed through this method exhibit no cracks and lacunae in large areas on their surface and their inner structures.展开更多
In this paper,amino capped CdSe/ZnS quantum dots(QDs)were immobilized on the 11-mercaptoundecanoic acid(MUA)self-assembled Au surface(SAM/Au)by 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride(EDC).Atomic f...In this paper,amino capped CdSe/ZnS quantum dots(QDs)were immobilized on the 11-mercaptoundecanoic acid(MUA)self-assembled Au surface(SAM/Au)by 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride(EDC).Atomic force microscopy(AFM),fluorescence imaging and electrochemistry were employed to characterize the surface.The results showed that CdSe/ZnS QDs were immobilized on the surface of SAM/Au successfully.Based on this method,the fluorescence of the QDs on the SAM/Au was monitored on-line.展开更多
数十年来,有机太阳能电池(organic solar cells,OSCs)的相关研究进展迅速,其能量转换效率从2000年的不足5%,发展至今已经超过18%,而这主要得益于给体和非富勒烯受体有机光伏材料的不断推陈出新.苯并三氮唑(benzotriazoles,BTA)作为一种...数十年来,有机太阳能电池(organic solar cells,OSCs)的相关研究进展迅速,其能量转换效率从2000年的不足5%,发展至今已经超过18%,而这主要得益于给体和非富勒烯受体有机光伏材料的不断推陈出新.苯并三氮唑(benzotriazoles,BTA)作为一种经典的缺电子型杂环单元,伴随着有机光伏领域的兴起与发展,由BTA单元构筑的聚合物给体、小分子给体、非富勒烯小分子受体以及聚合物受体材料被不断地设计合成出来,特别是J系列聚合物给体材料和Y系列非富勒烯受体材料.伴随着材料体系的不断优化,相关的分子设计策略也得到更新与完善,以期从多角度对OSCs的性能有针对性的进行调控.本综述旨在通过介绍基于BTA单元的有机光伏材料的相关研究进展以及与之相关的分子设计策略,回顾BTA类光伏材料数十年来的发展历程,并展望其未来的发展前景.展开更多
Two new D-A type polymers PBDSe-DPP and PBDSe-ID were synthesized to explore new ideal semiconduct- ing polymers, by conjugating acceptor unit diketopyrrolopyrrole/isoindigo to a donor unit benzo[l,2-b：4,5-b＇]di- se...Two new D-A type polymers PBDSe-DPP and PBDSe-ID were synthesized to explore new ideal semiconduct- ing polymers, by conjugating acceptor unit diketopyrrolopyrrole/isoindigo to a donor unit benzo[l,2-b：4,5-b＇]di- selenophene, which is designed by substituting the sulfur atom with a selenium atom in the benzo[1,2-b：4,5-b＇]- dithiophene. The thermal, optical, electrochemical, photoelectric and photovoltaie properties of the two polymers were studied systematically. Relatively high open circuit voltage （0.7 and 0.75 V） and fill factor （〉65%） were demonstrated for both polymers. Huge increase （by 64% and 120%） of the short circuit current density was achieved for both polymer based devices by using additive compared to the corresponding reference without addi- tive, resulting in decent power conversion efficiency of 3.7% and 2.5% respectively with only simple optimizing consideration. We believe this class of BDSe polymer possesses a good potential to be alternatives of active material for photovoltaic applications.展开更多
基金This work was financially supported by the Beijing Foundation of Natural Science, China(No. Z012013).
文摘Ordered macroporous titania photonic crystals （PCs） and photonic balls were fabricated by functional modified polymer colloidal crystals. The TiO2 PCs and balls formed through this method exhibit no cracks and lacunae in large areas on their surface and their inner structures.
文摘In this paper,amino capped CdSe/ZnS quantum dots(QDs)were immobilized on the 11-mercaptoundecanoic acid(MUA)self-assembled Au surface(SAM/Au)by 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride(EDC).Atomic force microscopy(AFM),fluorescence imaging and electrochemistry were employed to characterize the surface.The results showed that CdSe/ZnS QDs were immobilized on the surface of SAM/Au successfully.Based on this method,the fluorescence of the QDs on the SAM/Au was monitored on-line.
文摘数十年来,有机太阳能电池(organic solar cells,OSCs)的相关研究进展迅速,其能量转换效率从2000年的不足5%,发展至今已经超过18%,而这主要得益于给体和非富勒烯受体有机光伏材料的不断推陈出新.苯并三氮唑(benzotriazoles,BTA)作为一种经典的缺电子型杂环单元,伴随着有机光伏领域的兴起与发展,由BTA单元构筑的聚合物给体、小分子给体、非富勒烯小分子受体以及聚合物受体材料被不断地设计合成出来,特别是J系列聚合物给体材料和Y系列非富勒烯受体材料.伴随着材料体系的不断优化,相关的分子设计策略也得到更新与完善,以期从多角度对OSCs的性能有针对性的进行调控.本综述旨在通过介绍基于BTA单元的有机光伏材料的相关研究进展以及与之相关的分子设计策略,回顾BTA类光伏材料数十年来的发展历程,并展望其未来的发展前景.
文摘Two new D-A type polymers PBDSe-DPP and PBDSe-ID were synthesized to explore new ideal semiconduct- ing polymers, by conjugating acceptor unit diketopyrrolopyrrole/isoindigo to a donor unit benzo[l,2-b：4,5-b＇]di- selenophene, which is designed by substituting the sulfur atom with a selenium atom in the benzo[1,2-b：4,5-b＇]- dithiophene. The thermal, optical, electrochemical, photoelectric and photovoltaie properties of the two polymers were studied systematically. Relatively high open circuit voltage （0.7 and 0.75 V） and fill factor （〉65%） were demonstrated for both polymers. Huge increase （by 64% and 120%） of the short circuit current density was achieved for both polymer based devices by using additive compared to the corresponding reference without addi- tive, resulting in decent power conversion efficiency of 3.7% and 2.5% respectively with only simple optimizing consideration. We believe this class of BDSe polymer possesses a good potential to be alternatives of active material for photovoltaic applications.
