Composite nanoporous electrode SnO2/TiO2 was fabricated for the dye sensitized solar cell (DSSC) with N3 (Cis-Ru). After introducing of TiO2, the open-circuit photovoltage (Voc) was higher than that of the pure SnO2 ...Composite nanoporous electrode SnO2/TiO2 was fabricated for the dye sensitized solar cell (DSSC) with N3 (Cis-Ru). After introducing of TiO2, the open-circuit photovoltage (Voc) was higher than that of the pure SnO2 electrode, while short-circuit photocurrent (Isc) was varied with the ratio of the TiO2. Appropriate content of the TiO2 can be beneficial to the efficiency of the solar cell, and it gives negative impact on the composite electrode when the content of TiO2 is higher.展开更多
A dye-sensitized nanocrystalline TiO 2 solar cell(DYSC) was assembled, of which counter electrode was modified already by platinum, nickel and carbon. It was found that the DYSC had better photoelectric performanc...A dye-sensitized nanocrystalline TiO 2 solar cell(DYSC) was assembled, of which counter electrode was modified already by platinum, nickel and carbon. It was found that the DYSC had better photoelectric performance when the electrode was modified by platinum than by nickel and carbon. The influence of the incidence light wavelength on the incidence monochromatic photoelectric conversion efficiency(IPCE) was investigated. The result shows that the IPCE mainly depends on the short-circuit current density(I SC) of a DYSC, and the IPCE reaches 48.32% under the irradiation with the wavelength of 560 nm when the counter electrode of a DYSC was modified by platinum. The influence of incident light intensity on the photoelectric properties of a DYSC was also investigated. It was found that the I SC and open-circuit voltage(V OC) increased and the fill factor(f f) of the DYSC decreased with the increase of the incident light intensity.展开更多
The microporous nanocry'sta1line TiO2 electrode with large surface roughness factor hasbeen prepared on a conducting glass support. Modification of the TiO2 electrode by in situ preparingquantum sized RuS2 particl...The microporous nanocry'sta1line TiO2 electrode with large surface roughness factor hasbeen prepared on a conducting glass support. Modification of the TiO2 electrode by in situ preparingquantum sized RuS2 particles on the surface of TiO2 electrode extends the optical absorptionspectrum and photocurrent action specmim into visible region. In addition, compared with RuS2 bulknlaterials- a blue shifi in both absorption spectrum and photocurrent action speCtrum of RuS2rriO2elcctrode is obserived and explained in terms of quantum sized effect.展开更多
A new type of dye-sensitized nanocrystalline solid state photovoltaic cell based on the wide band gap n-TiO2/p-CuI heterojunction was fabricated. Tetra-carboxyphenyl porphyrine (TPP-(COOH)(4)), squarylium cyanine deri...A new type of dye-sensitized nanocrystalline solid state photovoltaic cell based on the wide band gap n-TiO2/p-CuI heterojunction was fabricated. Tetra-carboxyphenyl porphyrine (TPP-(COOH)(4)), squarylium cyanine derivative (SQ-(CH2),(SO3Py+)-Py-.) and ruthenium bipyridyl complex (RuL2(NCS)(2)) were used as photosensitizers. Larger photocurrents and photovoltages were shown in the cell sensitized by ruthenium bipyridyl complex and can be further increased by intercalation of a TiO2 thin underlayer.展开更多
文章通过Stober法合成粒径为300 nm的SiO_(2)纳米球,将该纳米球以乙醇为溶剂配置成一定浓度的悬浮液,通过旋涂法使其在染料敏化太阳能电池(dye-sensitized solar cells,DSSCs)的光阳极P25上形成一层薄膜,再将形成的P25-SiO_(2)复合膜放...文章通过Stober法合成粒径为300 nm的SiO_(2)纳米球,将该纳米球以乙醇为溶剂配置成一定浓度的悬浮液,通过旋涂法使其在染料敏化太阳能电池(dye-sensitized solar cells,DSSCs)的光阳极P25上形成一层薄膜,再将形成的P25-SiO_(2)复合膜放入TiO_(2)溶胶中浸泡一定时间,使得光阳极上的SiO_(2)纳米球被TiO_(2)纳米粒子包裹,形成SiO_(2)-TiO_(2)核壳结构薄膜。与没有散射层的DSSCs相比,以该核壳结构薄膜作为DSSCs的光散射层电池的光电转换效率提高了18%。展开更多
为了提高TiO_(2)薄膜的光学与电化学性能,文章利用一步水热法在P25纳米晶薄膜(P-film)的基础上制备了新颖的三维网络结构TiO_(2)纳米片薄膜(S-film)。通过场发射扫描电子显微镜(field emission scanning electron microscope,FESEM)和...为了提高TiO_(2)薄膜的光学与电化学性能,文章利用一步水热法在P25纳米晶薄膜(P-film)的基础上制备了新颖的三维网络结构TiO_(2)纳米片薄膜(S-film)。通过场发射扫描电子显微镜(field emission scanning electron microscope,FESEM)和场发射透射电子显微镜(field emission transmission electron microscope,FETEM)表征揭示S-film由P25颗粒转化而来,并可以通过水热时间调控S-film的厚度。紫外-可见漫反射光谱显示,在300~800 nm波长范围内S-film的引入有利于薄膜光散射性能的提升,且散射能力随着S-film薄膜厚度的增加而增强。光伏性能测试表明,一定厚度的S-film有利于提高染料敏化太阳能电池的光电转换效率,电化学阻抗谱进一步揭示S-film能够提高光生电子-空穴对的分离效率。展开更多
文摘Composite nanoporous electrode SnO2/TiO2 was fabricated for the dye sensitized solar cell (DSSC) with N3 (Cis-Ru). After introducing of TiO2, the open-circuit photovoltage (Voc) was higher than that of the pure SnO2 electrode, while short-circuit photocurrent (Isc) was varied with the ratio of the TiO2. Appropriate content of the TiO2 can be beneficial to the efficiency of the solar cell, and it gives negative impact on the composite electrode when the content of TiO2 is higher.
基金Supported by the National Natural Science Foundation of China(No. 5 0 0 82 0 0 3,5 0 372 0 2 2 ) and the Natural ScienceFoundation of Fujian Province,China(No. 2 0 0 1I0 0 6,E0 2 10 0 2 3)
文摘A dye-sensitized nanocrystalline TiO 2 solar cell(DYSC) was assembled, of which counter electrode was modified already by platinum, nickel and carbon. It was found that the DYSC had better photoelectric performance when the electrode was modified by platinum than by nickel and carbon. The influence of the incidence light wavelength on the incidence monochromatic photoelectric conversion efficiency(IPCE) was investigated. The result shows that the IPCE mainly depends on the short-circuit current density(I SC) of a DYSC, and the IPCE reaches 48.32% under the irradiation with the wavelength of 560 nm when the counter electrode of a DYSC was modified by platinum. The influence of incident light intensity on the photoelectric properties of a DYSC was also investigated. It was found that the I SC and open-circuit voltage(V OC) increased and the fill factor(f f) of the DYSC decreased with the increase of the incident light intensity.
文摘The microporous nanocry'sta1line TiO2 electrode with large surface roughness factor hasbeen prepared on a conducting glass support. Modification of the TiO2 electrode by in situ preparingquantum sized RuS2 particles on the surface of TiO2 electrode extends the optical absorptionspectrum and photocurrent action specmim into visible region. In addition, compared with RuS2 bulknlaterials- a blue shifi in both absorption spectrum and photocurrent action speCtrum of RuS2rriO2elcctrode is obserived and explained in terms of quantum sized effect.
文摘A new type of dye-sensitized nanocrystalline solid state photovoltaic cell based on the wide band gap n-TiO2/p-CuI heterojunction was fabricated. Tetra-carboxyphenyl porphyrine (TPP-(COOH)(4)), squarylium cyanine derivative (SQ-(CH2),(SO3Py+)-Py-.) and ruthenium bipyridyl complex (RuL2(NCS)(2)) were used as photosensitizers. Larger photocurrents and photovoltages were shown in the cell sensitized by ruthenium bipyridyl complex and can be further increased by intercalation of a TiO2 thin underlayer.
文摘文章通过Stober法合成粒径为300 nm的SiO_(2)纳米球,将该纳米球以乙醇为溶剂配置成一定浓度的悬浮液,通过旋涂法使其在染料敏化太阳能电池(dye-sensitized solar cells,DSSCs)的光阳极P25上形成一层薄膜,再将形成的P25-SiO_(2)复合膜放入TiO_(2)溶胶中浸泡一定时间,使得光阳极上的SiO_(2)纳米球被TiO_(2)纳米粒子包裹,形成SiO_(2)-TiO_(2)核壳结构薄膜。与没有散射层的DSSCs相比,以该核壳结构薄膜作为DSSCs的光散射层电池的光电转换效率提高了18%。
文摘为了提高TiO_(2)薄膜的光学与电化学性能,文章利用一步水热法在P25纳米晶薄膜(P-film)的基础上制备了新颖的三维网络结构TiO_(2)纳米片薄膜(S-film)。通过场发射扫描电子显微镜(field emission scanning electron microscope,FESEM)和场发射透射电子显微镜(field emission transmission electron microscope,FETEM)表征揭示S-film由P25颗粒转化而来,并可以通过水热时间调控S-film的厚度。紫外-可见漫反射光谱显示,在300~800 nm波长范围内S-film的引入有利于薄膜光散射性能的提升,且散射能力随着S-film薄膜厚度的增加而增强。光伏性能测试表明,一定厚度的S-film有利于提高染料敏化太阳能电池的光电转换效率,电化学阻抗谱进一步揭示S-film能够提高光生电子-空穴对的分离效率。
