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Pure anatase nanoglue”: An inorganic binding agent to improve nanoparticle interconnections in the low-temperature sintering of dye-sensitized solar cells
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Scheme 1.

Mechanism of interparticle connection by nanoglue.

Image of FIG. 1.

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FIG. 1.

Thixotropic behavior of a nanoglue suspension (a) before and (b) after shaking. (c) HR-TEM images of the nanoglue particles; the inset shows a single nanoglue crystal. (d) Powder XRD spectrum of particles in the nanoglue.

Image of FIG. 2.

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FIG. 2.

(a) HR-TEM images of the microstructure of the interparticle connections between the P25 particles and the smaller nanoglue particles. (b) Enlarged image of nanoglue particles located in between the P25 particles; the arrows indicate the boundaries of the nanoglue and P25 particles.

Image of FIG. 3.

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FIG. 3.

(a) Photovoltage-current curves of DSSCs based on films fabricated with P25 only and with a mixture of P25 and nanoglue particles. (b) Electron-diffusion coefficient derived from the electron collection time using the equation , where is the thickness of the film and is the collection time constant.

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/content/aip/journal/apl/98/10/10.1063/1.3562030
2011-03-08
2014-04-21

Abstract

An interparticle-binding agent, or “nanoglue,” was prepared for the fabrication of well-interconnected photoelectrodes in dye-sensitized solar cells(DSSCs)sintered at low temperature. This nanoglue consisted of pure anatase particles approximately 5 nm in diameter dispersed in alcoholic solvent. When mixed with particles 21 nm in diameter, the nanoglue induced interparticle chemical bridging via the condensation of hydroxyl groups on surfaces of particles. The efficiency of nanoglue-based DSSCs was improved by approximately 25% compared to non-nanoglue-based DSSCs. This improvement was mainly ascribed to enhanced interparticle connections due to the presence of the 5 nm particles in nanoglue.

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Scitation: Pure anatase TiO2 “nanoglue”: An inorganic binding agent to improve nanoparticle interconnections in the low-temperature sintering of dye-sensitized solar cells
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/10/10.1063/1.3562030
10.1063/1.3562030
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