Mesoporous TiO2 aggregate photoanode with high specific surface area and strong light scattering for dye-sensitized solar cells

Li, Chunhui; Luo, Yanhong; Guo, Xiaozhi; Li, Dongmei; Mi, Jianli; Sø, Lasse; Hald, Peter; Meng, Qingbo; Iversen, Bo B.

doi:10.1016/j.jssc.2012.07.014

Cited by 23 publications

(10 citation statements)

References 36 publications

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“…The nitrogen adsorption-desorption isotherm of the ZnO NP film exhibits a type IV pattern with a hysteresis loop which is the signature of mesoporous materials. 31 The BET specific surface area is 20 m 2 g À1 which is comparable to that of the often used P25 TiO 2 NP based films 24 and the BJH desorption average pore size is 31 nm. In fact, the inset in Fig.…”

Section: Microstructurementioning

confidence: 71%

“…20 nm and high crystallinity by a green, rapid, and scalable continuous flow supercritical fluid process. 20,21,24 The ZnO NPs were subsequently made into a paste and coated on F-doped SnO 2 (FTO) conductive glass as the photoanode of CdS/CdSe QDSCs. By carefully regulating the deposition amount of CdS and CdSe QDs on the ZnO NP film, an optimum power conversion efficiency as high as 4.46% has been achieved, and the corresponding V oc of 683 mV is much higher than obtained for TiO 2 NP photoanode based CdS/CdSe QDSCs.…”

Section: Introductionmentioning

confidence: 99%

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ZnO nanoparticle based highly efficient CdS/CdSe quantum dot-sensitized solar cells

Yang

Xiao

et al. 2013

Phys. Chem. Chem. Phys.

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Section: Microstructurementioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

ZnO nanoparticle based highly efficient CdS/CdSe quantum dot-sensitized solar cells

Yang

Xiao

et al. 2013

Phys. Chem. Chem. Phys.

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“…4 Recently, submicrometer-sized oxide nanocrystalline aggregates assembled by nanometer-sized crystallites are reported to be a promising class of materials to enhance light scattering. 5 An improvement of 12% compared with P25 (B ¼ 25 nm) device is obtained for 11 nm TiO 2 particles. This is a crucial result for optimizing DSSC because in the former study the enhancement of light scattering is oen achieved by big particles, that is, by loss of specic surface area for absorption of the incident photons.…”

Section: Introductionmentioning

confidence: 91%

Oriented mesoporous TiO2 film as photoanode for dye-sensitized solar cells

Cheng

et al. 2013

J. Mater. Chem. A

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Flexible bicontinuous mesostructured polymer/inorganic composite membranes was prepared by undertaking co-assembly of surfactants and inorganic sol-gel processes inside pores of a preformed porous polymer membrane. After burning off the organic component, the oriented mesoporous TiO 2 film was obtained. The three dimensional porous structure was carefully investigated, and a DSSC was fabricated using the obtained TiO 2 film as photoanode. The method of incorporating surfactant induced self-organizing sol-gel process and a certain nanoporous template was proved to be a useful technique to create different kinds of nano-/mesoporous structures.

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“…F-doped SnO 2 (FTO) glasses (Nippon Sheet Glass; sheet resistance: 15 /square) were used for preparing both photoanodes and counter electrodes. First, TiO 2 and SnO 2 mesoporous films 13,14 were prepared for loading QDs, respectively, followed by TiCl 4 treatment. Subsequently, two kinds of QDs, CdS, 15 and PbS, 14,16 were assembled on the photoanode film by the successive ionic layer adsorption and reaction (SILAR) technique.…”

Section: A Qdsc Fabricationmentioning

confidence: 99%

Study on negative incident photon-to-electron conversion efficiency of quantum dot-sensitized solar cells

Zhu

et al. 2014

Review of Scientific Instruments

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Recently, negative signals are frequently observed during the measuring process of monochromatic incident photon-to-electron conversion efficiency (IPCE) for sensitized solar cells by DC method. This phenomenon is confusing and hindering the reasonable evaluation of solar cells. Here, cause of negative IPCE values is studied by taking quantum dot-sensitized solar cell (QDSC) as an example, and the accurate measurement method to avoid the negative value is suggested. The negative background signals of QDSC without illumination are found the direct cause of the negative IPCE values by DC method. Ambient noise, significant capacitance characteristics, and uncontrolled electrochemical reaction all can lead to the negative background signals. When the photocurrent response of device under monochromatic light illumination is relatively weak, the actual photocurrent signals will be covered by the negative background signals and the resulting IPCE values will appear negative. To improve the signal-to-noise ratio, quasi-AC method is proposed for IPCE measurement of solar cells with weak photocurrent response based on the idea of replacing the absolute values by the relative values.

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Mesoporous TiO2 aggregate photoanode with high specific surface area and strong light scattering for dye-sensitized solar cells

Cited by 23 publications

References 36 publications

ZnO nanoparticle based highly efficient CdS/CdSe quantum dot-sensitized solar cells

ZnO nanoparticle based highly efficient CdS/CdSe quantum dot-sensitized solar cells

Oriented mesoporous TiO2 film as photoanode for dye-sensitized solar cells

Study on negative incident photon-to-electron conversion efficiency of quantum dot-sensitized solar cells

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