Controllable electrochemical synthesis and photovoltaic performance of ZnO/CdS core–shell nanorod arrays on fluorine-doped tin oxide

Yao, Chenzhong; Wei, Bohui; Meng, Lan; Li, Hui; Gong, Qiaojuan; Sun, Hong; Ma, Hua; Hu, Xiaohua

doi:10.1016/j.jpowsour.2012.01.154

Cited by 87 publications

(33 citation statements)

References 35 publications

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“…2(d), lattice fringes with 0.28-0.32 nm interplanar crystal spacings are clearly visible. According to some previous researchers' works, these interplanar crystal spacings arise from the (1 0 0) crystal plane in ZnO and (1 0 1) crystal planes in CdS, respectively [60], [61]. These results confirm that the ZnO nanorod surfaces were successfully covered with the CdS QDs after the sensitization via the chemical bath deposition.…”

Section: A Zno Nanorod Arrays Sensitized With Cds Quantum Dotssupporting

confidence: 72%

Multiworking Electrode Flexible Fiber-Type Quantum Dot-Sensitized Solar Cells

Liu

Zhang

Liang

et al. 2016

IEEE J. Photovoltaics

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Flexible fiber-type CdS quantum dot-sensitized solar cells (CdS FF-QDSSCs), in which all the components are assembled into a flexible plastic capillary tube, are designed and fabricated. In each FF-QDSSC, a Pt wire along the capillary tube axis acts as the counter electrode. A number of surrounding Ti wires coated with CdS-sensitized ZnO nanorods act as the working electrodes. This design provides the cells with good flexibility and all-direction light harvesting capability. The photovoltaic performances of the FF-QDSSCs can be effectively improved by increasing the number of the working electrodes up to six. The conversion efficiency of the cell with six working electrodes (FF-QDSSC-6) is more than five times that of the cell with only one working electrode. Furthermore, for simultaneously illuminating the cell from all the directions perpendicular to the capillary tube, an Al reflector is placed behind the cell. This measure raised the maximum power output of an FF-QDSSC-6 by 55%. Index Terms-Flexible, multiple working electrodes, quantum dot-sensitized solar cell, simultaneous light harvesting from all directions, ZnO nanorod.

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Section: A Zno Nanorod Arrays Sensitized With Cds Quantum Dotssupporting

confidence: 72%

Multiworking Electrode Flexible Fiber-Type Quantum Dot-Sensitized Solar Cells

Liu

Zhang

Liang

et al. 2016

IEEE J. Photovoltaics

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Section: Introductionmentioning

confidence: 99%

“…Several studies on 1D single-crystalline oxide array have been reported [18,19]. Yao et al [18] reported on CdS QD-sensitized ZnO nanorod arrays (NRAs) that displayed a power conversion efficiency of 1.07%. CdS QD-sensitized TiO 2 NRA solar cells have been prepared through the CBD method with a photocurrent intensity of 5.13 mA/cm 2 at 0-V potential and an open-circuit potential of −0.68 V [19].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and photoelectrochemical response of CdS quantum dot-sensitized TiO2 nanorod array photoelectrodes

Wang

Zhang

et al. 2013

Nanoscale Res Lett

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A continuous and compact CdS quantum dot-sensitive layer was synthesized on TiO2 nanorods by successive ionic layer adsorption and reaction (SILAR) and subsequent thermal annealing. The thickness of the CdS quantum dot layer was tuned by SILAR cycles, which was found to be closely related to light absorption and carrier transformation. The CdS quantum dot-sensitized TiO2 nanorod array photoelectrodes were characterized by scanning electron microscopy, X-ray diffraction, ultraviolet–visible absorption spectroscopy, and photoelectrochemical property measurement. The optimum sample was fabricated by SILAR in 70 cycles and then annealed at 400°C for 1 h in air atmosphere. A TiO2/CdS core-shell structure was formed with a diameter of 35 nm, which presented an improvement in light harvesting. Finally, a saturated photocurrent of 3.6 mA/cm2 was produced under the irradiation of AM1.5G simulated sunlight at 100 mW/cm2. In particular, the saturated current density maintained a fixed value of approximately 3 mA/cm2 without decadence as time passed under the light conditions, indicating the steady photoelectronic property of the photoanode.

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“…Among the photoanode heterostructures, those having a suitable band alignment are the most promising PEC candidates for photoanodes. These heterostructures usually contain one wide bandgap semiconductor and one narrow bandgap semiconductor, enabling not only the broad absorption of visible light but also inhibition of the charge recombination process [7,8,9]. Therefore, a rationally designed heterojunctions is an effective strategy for improving the efficiency of PEC energy conversion [10].…”

Section: Introductionmentioning

confidence: 99%