Copper selenide （CurSe） has great potential as counter electrode for quantum dots sensitized solar cell （QDSSC） due to its excellent electrocatalytic activity and lower charge transfer resistance. A novel ion exch...Copper selenide （CurSe） has great potential as counter electrode for quantum dots sensitized solar cell （QDSSC） due to its excellent electrocatalytic activity and lower charge transfer resistance. A novel ion exchange method has been utilized to fabricate Cu3Se2 nanosheets array counter electrode. CdS layer was first deposited by sputtering and used as a template to grow compact and uni- form Cu3Se2 film in a typical chemical bath. The morphology and thickness of the Cu3Se2 nanosheets were controlled by the deposition time. The final products （2h-Cu3Se2） showed significantly improved electrochemical catalytic activity and carrier transport property, leading to a much increased power conversion efficiency （4.01%） when compared with the CuS counter electrode CdS/CdSe QDSSC （3.21%）.展开更多
Dye-sensitized solar cells （DSSCs） cannot be developed without the research on sensitizers. As the key of light harvesting and electron generation, thousands of sensitizers have been designed for the application in ...Dye-sensitized solar cells （DSSCs） cannot be developed without the research on sensitizers. As the key of light harvesting and electron generation, thousands of sensitizers have been designed for the application in DSSC devices. Among them, organic sensitizers have drawn a lot of attention because of the flexible molecular design, easy synthesis and good photovoltaic performance. Recently, new record photovoltaic conversion efficiencies of 11.5% for DSSCs with iodide electrolyte and 14.3% for DSSCs with cobalt electrolyte and co-sensitization have been achieved with organic sensitizers. Here we focus on the donor design and modification of organic sensitizers. Several useful strategies and corresponding typical examples are presented.展开更多
Close packed ZnO nanoparticles on carbon cloth were synthesized by repeating a facile hydrothermal route in this study. After characterized by X-ray diffraction （XRD） and scanning electron microscopy （SEM）, the ob...Close packed ZnO nanoparticles on carbon cloth were synthesized by repeating a facile hydrothermal route in this study. After characterized by X-ray diffraction （XRD） and scanning electron microscopy （SEM）, the obtained ZnO cloth was further studied for the applications in lithium （Li）-ion batteries （LIBs） and dye-sensitized solar cells （DSSCs）. When ZnO cloth annealed at 400℃ for 2 h were used as anodes of LIBs, it exhibited high capacity of 600mAh/g and outstanding cycling capability without significant fading after 130 cycles. Moreover, it was also found that our electrodes displayed good stabilities under various humidity and temperature. Furthermore, the obtained composites were calcined at higher temperature （800℃） to remove carbon and white pure ZnO cloth was formed. We transferred the as-formed ZnO cloth to fluorine-doped tin oxide （FTO） substrate to make DSSCs, exhibiting an improved efficiency of around 0.38% assisted by TiC14 treatment.展开更多
A photoanode structure for dye-sensitized solar cells has been applied into the photocatalytic/electrochemical cooperative degradation of methylene blue solutions.The low eutectic point of titanium dioxide(TiO2)with a...A photoanode structure for dye-sensitized solar cells has been applied into the photocatalytic/electrochemical cooperative degradation of methylene blue solutions.The low eutectic point of titanium dioxide(TiO2)with a fluorine-doped tin dioxide(FTO)conductive layer results in a high reactivity of TiO2for the photocatalytic process as well as a good electron transfer for the electrochemical process.The porous TiO2layer maintains a large surface area for the degradations.Through the combinational process,the degradation velocity was improved by*36%,compared to a pure photocatalytic process.展开更多
基金supported by the National Natural Science Foundation of China (51374029 and 51611130063)Fundamental Research Funds for the Central Universities (FRF-BD-16-012A)111 Project (B17003)
文摘Copper selenide （CurSe） has great potential as counter electrode for quantum dots sensitized solar cell （QDSSC） due to its excellent electrocatalytic activity and lower charge transfer resistance. A novel ion exchange method has been utilized to fabricate Cu3Se2 nanosheets array counter electrode. CdS layer was first deposited by sputtering and used as a template to grow compact and uni- form Cu3Se2 film in a typical chemical bath. The morphology and thickness of the Cu3Se2 nanosheets were controlled by the deposition time. The final products （2h-Cu3Se2） showed significantly improved electrochemical catalytic activity and carrier transport property, leading to a much increased power conversion efficiency （4.01%） when compared with the CuS counter electrode CdS/CdSe QDSSC （3.21%）.
文摘Dye-sensitized solar cells （DSSCs） cannot be developed without the research on sensitizers. As the key of light harvesting and electron generation, thousands of sensitizers have been designed for the application in DSSC devices. Among them, organic sensitizers have drawn a lot of attention because of the flexible molecular design, easy synthesis and good photovoltaic performance. Recently, new record photovoltaic conversion efficiencies of 11.5% for DSSCs with iodide electrolyte and 14.3% for DSSCs with cobalt electrolyte and co-sensitization have been achieved with organic sensitizers. Here we focus on the donor design and modification of organic sensitizers. Several useful strategies and corresponding typical examples are presented.
文摘Close packed ZnO nanoparticles on carbon cloth were synthesized by repeating a facile hydrothermal route in this study. After characterized by X-ray diffraction （XRD） and scanning electron microscopy （SEM）, the obtained ZnO cloth was further studied for the applications in lithium （Li）-ion batteries （LIBs） and dye-sensitized solar cells （DSSCs）. When ZnO cloth annealed at 400℃ for 2 h were used as anodes of LIBs, it exhibited high capacity of 600mAh/g and outstanding cycling capability without significant fading after 130 cycles. Moreover, it was also found that our electrodes displayed good stabilities under various humidity and temperature. Furthermore, the obtained composites were calcined at higher temperature （800℃） to remove carbon and white pure ZnO cloth was formed. We transferred the as-formed ZnO cloth to fluorine-doped tin oxide （FTO） substrate to make DSSCs, exhibiting an improved efficiency of around 0.38% assisted by TiC14 treatment.
基金supported by the National High Technology Research and Development Program of China (2011AA050507)the National Natural Science Foundation of China (61006150,50821004,and 61076051)
文摘A photoanode structure for dye-sensitized solar cells has been applied into the photocatalytic/electrochemical cooperative degradation of methylene blue solutions.The low eutectic point of titanium dioxide(TiO2)with a fluorine-doped tin dioxide(FTO)conductive layer results in a high reactivity of TiO2for the photocatalytic process as well as a good electron transfer for the electrochemical process.The porous TiO2layer maintains a large surface area for the degradations.Through the combinational process,the degradation velocity was improved by*36%,compared to a pure photocatalytic process.
