A shape- and morphology-controlled metal organic framework template for high-efficiency solid-state dye-sensitized solar cells

Won Seok Chi, Dong Kyu Roh, Chang Soo Lee, Jong Hak Kim

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

This report provides a facile process to produce shape- and morphology-controlled MIL-125(Ti), a subclass of metal organic frameworks (MOFs) using poly(ethylene glycol) diglycidyl ether (PEGDGE) as a structure directing agent. Upon deliberate calcination, MIL-125(Ti) is converted to mesoporous hierarchical TiO2(hier-TiO2) with an anatase phase, a large surface area and a variety of nanostructures. The morphology changes from 200 nm circular plates to 1 μm bipyramids with increasing PEGDGE amount, indicating the pivotal role of PEGDGE as a shape controller. When the hier-TiO2is deposited onto a nanocrystalline TiO2(nc-TiO2) layer as the scattering layer, the dye-sensitized solar cell (DSSC) with a quasi-solid-state polymer electrolyte records a high conversion efficiency (7.1% at 100 mW cm-2), which is much higher than that of DSSCs with a nc-TiO2layer only (4.6%) or with commercial scattering TiO2(cs-TiO2) on a nc-TiO2layer (5.0%). A solid-state DSSC using a single component solid polymer, i.e., poly((1-(4-ethenylphenyl)methyl)-3-butyl-imidazolium iodide) (PEBII), also exhibits an excellent efficiency of up to 8.0%. The improved efficiency results from the pivotal role of the hier-TiO2in improving the surface area and light harvesting properties, as demonstrated by N2adsorption/desorption isotherm, reflectance spectroscopy, incident photon-to-current efficiency (IPCE), and electrochemical impedance spectroscopy (EIS) analyses.

Original languageEnglish
Pages (from-to)21599-21608
Number of pages10
JournalJournal of Materials Chemistry A
Volume3
Issue number43
DOIs
Publication statusPublished - 2015 Jan 1

Fingerprint

Polyethylene glycols
Ethers
Metals
Polymers
Scattering
Iodides
Electrochemical impedance spectroscopy
Calcination
Titanium dioxide
Electrolytes
Conversion efficiency
Isotherms
Nanostructures
Desorption
Photons
Spectroscopy
Controllers
Dye-sensitized solar cells
Quetol 651
N(1)-methyl-2-lysergic acid diethylamide

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

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title = "A shape- and morphology-controlled metal organic framework template for high-efficiency solid-state dye-sensitized solar cells",
abstract = "This report provides a facile process to produce shape- and morphology-controlled MIL-125(Ti), a subclass of metal organic frameworks (MOFs) using poly(ethylene glycol) diglycidyl ether (PEGDGE) as a structure directing agent. Upon deliberate calcination, MIL-125(Ti) is converted to mesoporous hierarchical TiO2(hier-TiO2) with an anatase phase, a large surface area and a variety of nanostructures. The morphology changes from 200 nm circular plates to 1 μm bipyramids with increasing PEGDGE amount, indicating the pivotal role of PEGDGE as a shape controller. When the hier-TiO2is deposited onto a nanocrystalline TiO2(nc-TiO2) layer as the scattering layer, the dye-sensitized solar cell (DSSC) with a quasi-solid-state polymer electrolyte records a high conversion efficiency (7.1{\%} at 100 mW cm-2), which is much higher than that of DSSCs with a nc-TiO2layer only (4.6{\%}) or with commercial scattering TiO2(cs-TiO2) on a nc-TiO2layer (5.0{\%}). A solid-state DSSC using a single component solid polymer, i.e., poly((1-(4-ethenylphenyl)methyl)-3-butyl-imidazolium iodide) (PEBII), also exhibits an excellent efficiency of up to 8.0{\%}. The improved efficiency results from the pivotal role of the hier-TiO2in improving the surface area and light harvesting properties, as demonstrated by N2adsorption/desorption isotherm, reflectance spectroscopy, incident photon-to-current efficiency (IPCE), and electrochemical impedance spectroscopy (EIS) analyses.",
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A shape- and morphology-controlled metal organic framework template for high-efficiency solid-state dye-sensitized solar cells. / Chi, Won Seok; Roh, Dong Kyu; Lee, Chang Soo; Kim, Jong Hak.

In: Journal of Materials Chemistry A, Vol. 3, No. 43, 01.01.2015, p. 21599-21608.

Research output: Contribution to journalArticle

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AB - This report provides a facile process to produce shape- and morphology-controlled MIL-125(Ti), a subclass of metal organic frameworks (MOFs) using poly(ethylene glycol) diglycidyl ether (PEGDGE) as a structure directing agent. Upon deliberate calcination, MIL-125(Ti) is converted to mesoporous hierarchical TiO2(hier-TiO2) with an anatase phase, a large surface area and a variety of nanostructures. The morphology changes from 200 nm circular plates to 1 μm bipyramids with increasing PEGDGE amount, indicating the pivotal role of PEGDGE as a shape controller. When the hier-TiO2is deposited onto a nanocrystalline TiO2(nc-TiO2) layer as the scattering layer, the dye-sensitized solar cell (DSSC) with a quasi-solid-state polymer electrolyte records a high conversion efficiency (7.1% at 100 mW cm-2), which is much higher than that of DSSCs with a nc-TiO2layer only (4.6%) or with commercial scattering TiO2(cs-TiO2) on a nc-TiO2layer (5.0%). A solid-state DSSC using a single component solid polymer, i.e., poly((1-(4-ethenylphenyl)methyl)-3-butyl-imidazolium iodide) (PEBII), also exhibits an excellent efficiency of up to 8.0%. The improved efficiency results from the pivotal role of the hier-TiO2in improving the surface area and light harvesting properties, as demonstrated by N2adsorption/desorption isotherm, reflectance spectroscopy, incident photon-to-current efficiency (IPCE), and electrochemical impedance spectroscopy (EIS) analyses.

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