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

Abstract

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.

Three dimensional photovoltaic fibers for wearable energy harvesting and conversion

“…For example, several fiber photoanodes were in cooperated with a Pt counter electrode. This structure has been reported for dye and quantum dots sensitized fiber solar cells [99,100] . The flexible fiber-type dye-sensitized solar cell with six working electrodes achieved 9.1% efficiency with good stability and all-direction light harvesting capability ( Fig.…”

A One‐Dimensional Fluidic Nanogenerator with a High Power Conversion Efficiency

“…Importantly, flowing energy can be used during both day and night time and is not affected by weather. To systematically estimate the harvesting performance of the FFNG, a comparison with various miniature fiber‐shaped generators, including dye‐sensitized solar cells (DSSCs), perovskite solar cells (PSCs), quantum‐dot‐sensitized solar cells (QDSSCs), organic solar cells (OSCs), inorganic solar cells (ISCs) and nanogenerators (NGs) that harvest electrostatic and triboelectric energy, was further conducted (Figure ). The FFNG showed the highest power conversion efficiency of 23.3 %.…”

“… Power conversion efficiencies and flexibilities of the FFNG and other fiber‐shaped generators, including dye‐sensitized solar cells (DSSCs), perovskite solar cells (PSCs), quantum‐dot‐sensitized solar cells (QDSSCs), organic solar cells (OSCs), inorganic solar cells (ISCs) and nanogenerators (NGs) that harvest electrostatic and triboelectric energy …”

A One‐Dimensional Fluidic Nanogenerator with a High Power Conversion Efficiency

“…For solar cells,o nly one side can be illuminated to harvest sunlight during use.A dditionally,t he availability of sunlight is only during daytime. To systematically estimate the harvesting performance of the FFNG,acomparison with various miniature fiber-shaped generators,i ncluding dyesensitized solar cells (DSSCs), [19,[29][30][31][32][33] perovskite solar cells (PSCs), [20,21,[34][35][36] quantum-dot-sensitized solar cells (QDSSCs), [37][38][39] organic solar cells (OSCs), [40,41] inorganic solar cells (ISCs) [42,43] and nanogenerators (NGs) that harvest electrostatic and triboelectric energy, [23,24] was further conducted (Figure 3). To systematically estimate the harvesting performance of the FFNG,acomparison with various miniature fiber-shaped generators,i ncluding dyesensitized solar cells (DSSCs), [19,[29][30][31][32][33] perovskite solar cells (PSCs), [20,21,[34][35][36] quantum-dot-sensitized solar cells (QDSSCs), [37][38][39] organic solar cells (OSCs), [40,41] inorganic solar cells (ISCs) [42,43] and nanogenerators (NGs) that harvest electrostatic and triboelectric energy, [23,24] was further conducted ...…”

“…[14] Thestreaming potential by pressuredriving water flow is hard to be induced on hydrophobic surface. [19,[25][26][27][28][29] perovskites olar cells (PSCs), [20,21,[30][31][32] quantum-dotsensitized solar cells (QDSSCs), [33][34][35] organic solar cells (OSCs), [36,37] inorganic solar cells (ISCs) [38,39] and nanogenerators (NGs) that harvest electrostatic and triboelectrice nergy. Fort he OMC-incorporated FFNG, owing to the large surface area, the OMC provides ah igher capacity for ion adsorption, which allows for the generation of alarger potential difference.T overify this hypothesis,w ei nvestigated the cyclic voltammograms of the FFNG with increasing OMC contents in at hree-electrode electrochemical cell.…”