Studies on solution processed Graphene-Nb2O5 nanocomposite based photoanode for dye-sensitized solar cells

Jamil, Mahmood; Khan, Zuhair S.; Ali, Asghar; Iqbal, Naseem

doi:10.1016/j.jallcom.2016.09.300

Cited by 34 publications

(21 citation statements)

References 23 publications

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“…Preparation of graphene-TiO 2 (GN-TiO 2 ) or reduced graphene oxide-TiO 2 (RGO-TiO 2 ) nanohybrid material as the photoanode in DSSCs is a new hot spot in the research of DSSCs in recent years [17][18][19][20][21][22][23][24]. It is believed that incorporation of GN could facilitate the electron transmission and suppress the charge recombination, so as to improve the performance of DSSCs due to its excellent conducting properties [17,18].…”

Section: Introductionmentioning

confidence: 99%

A detailed investigation on the performance of dye-sensitized solar cells based on reduced graphene oxide-doped TiO2 photoanode

et al. 2017

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The sintered TiO 2 nanofilms were immersed in the aqueous solution of graphite oxide and then were thermally reduced to reduced graphene oxide (RGO), resulting in RGO-doped TiO 2 photoanodes employed in the dye-sensitized solar cells (DSSCs). This preparation method for the reduced graphene oxide-TiO 2 (RGO-TiO 2 ) photoanode could avoid the loss of RGO during the sintering process. The presence of RGO in the photoanodes was confirmed using Raman analysis, scanning electron microscopy, transmission electron microscopy, and energy-dispersive spectrometer. The amount of RGO in photoanode was obtained by thermo-gravimetric analysis. Other techniques such as X-ray diffraction, Brunauer-Emmett-Teller, electron energy loss spectroscopy, and X-ray photoelectron spectroscopy were used to characterize the composite materials of RGO-TiO 2 . The J-V measurement of RGO-TiO 2 -based DSSCs showed that the best photoelectric conversion efficiency (g) of 6.85% is 11.7% higher than that of the pure TiO 2 (P25-TiO 2 )-based DSSCs. It was shown that RGO in the photoanode could facilitate the phase transition in TiO 2 crystals (from anatase to rutile) resulting in the mixed crystals in the photoanodes. The existence of RGO and mixed-crystal structure of TiO 2 changed the electronic transmission pathway, reduced the recombination rate of electron-hole pairs, and thus improved the g of DSSCs.

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Section: Introductionmentioning

confidence: 99%

A detailed investigation on the performance of dye-sensitized solar cells based on reduced graphene oxide-doped TiO2 photoanode

et al. 2017

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“…A dye-sensitized solar cell (DSSC or DYSC) is a low-cost solar cell, invented by Swiss scientists Michael Grätzel and Dr. Brian O'Regan in 1991, and is often called as Gräetzel cell (G Cell) [3]. DSSCs have attracted significant attention in search of substitute for silicon and thin-film solar cells due to their environmental friendliness, low fabrication costs and simple preparation process and remarkable conversion of solar energy into electricity [28]. DSSC is a photoelectrochemical system consisting of (a) transparent conducting working electrode (photoanode), (b) a dye sensitizer, (c) a counter electrode (cathode) and (d) an electrolyte [28,29].…”

Section: Graphene Application In Solar Cells 21 Graphene Applicationmentioning

confidence: 99%

“…DSSCs have attracted significant attention in search of substitute for silicon and thin-film solar cells due to their environmental friendliness, low fabrication costs and simple preparation process and remarkable conversion of solar energy into electricity [28]. DSSC is a photoelectrochemical system consisting of (a) transparent conducting working electrode (photoanode), (b) a dye sensitizer, (c) a counter electrode (cathode) and (d) an electrolyte [28,29]. Its principle of operation is likened to natural photosynthesis process in plants.…”

Section: Graphene Application In Solar Cells 21 Graphene Applicationmentioning

confidence: 99%

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Graphene/Metal Oxide Nanocomposite Usage as Photoanode in Dye-Sensitized and Perovskite Solar Cells

Mahmood¹,

Aslam²,

Akhtar³

2020

Assorted Dimensional Reconfigurable Materials

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Global energy shortage will be one of the most critical challenges in the next 50 years. Currently, over 80% of energy consumed is produced from fossil fuels, which is directly linked to global warming and environmental pollution issues. Environment-friendly renewable energy is rapidly gaining importance for the existence of human civilization. A leading source of renewable energy is the solar energy, which is inexhaustible and abundantly available. Solar cells that convert solar energy directly into electricity are drawing considerable attention as a potential turnkey solution to address these challenges. Several approaches have been made in this respect, including the development of better materials and the designs of new solar cell configuration and architecture. Among the innovative materials with potential application in emerging 3G solar cells, graphene and its derivatives such as GO, rGO and G/nanocomposite have been widely explored as transparent conducting electrodes, electron donor or acceptor materials and counter electrodes (CE). In this chapter, the use of graphene nanocomposites has been explored as an electrode material in DSSCs and PSCs. Recently, graphene/metal oxide nanocomposites have been widely used in DSSCs and PSCs and played a significant role in increasing charge transport, reducing charge recombination and thus enhancing the performance of solar cell.

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“…Since the DSSC was fabricated for the first time in 1991, researchers have done much work to optimize the materials and microstructure of the photo‐anode. Among varied photo‐anodes, TiO 2 photo‐anodes have exhibited relatively high photoelectric conversion efficiency (PCE), while comparing with other metal oxides (CeO 2 , ZnO, SnO 2 , Nb 2 O 5 , In 2 O 3 , α‐Fe 2 0 3 , WO 3 ) composite oxides (Graphene‐Nb 2 O 5 , Al‐ZnO, Graphene‐MOF, Cu x O‐WO 3 ). Moreover, due to the photochemical stability, nontoxicity, and adequate resources for synthesis, TiO 2 has become the best material for application in electronic devices …”

Section: Introductionmentioning

confidence: 99%

Recent progress in electrospinning TiO₂ nanostructured photo‐anode of dye‐sensitized solar cells

Wan

Ramakrishna

Liu

2017

J of Applied Polymer Sci

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The key to improving the performance of dye-sensitized solar cells is the photo-anode that has much dye adsorption and short optoelectronic transmission path. Electrospun TiO 2 films in photo-anode have high specific surface area and meet the demand exactly. The article summarizes these efforts in TiO 2 photo-anode improvement, including various morphology, different onedimensional and two-dimensional composite structure, and varied element doped TiO 2 photo-anode. Besides, the review makes comparison with these different TiO 2 photo-anodes in photoelectric properties. The conclusions provide a clear guidance in design of morphology, structure, and doping, which is helpful for researcher to improve the performance of the anode and increase the photoelectric conversion efficiency especially those prepared using electrospinning. V C 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45649.

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Studies on solution processed Graphene-Nb2O5 nanocomposite based photoanode for dye-sensitized solar cells

Cited by 34 publications

References 23 publications

A detailed investigation on the performance of dye-sensitized solar cells based on reduced graphene oxide-doped TiO2 photoanode

A detailed investigation on the performance of dye-sensitized solar cells based on reduced graphene oxide-doped TiO2 photoanode

Graphene/Metal Oxide Nanocomposite Usage as Photoanode in Dye-Sensitized and Perovskite Solar Cells

Recent progress in electrospinning TiO₂ nanostructured photo‐anode of dye‐sensitized solar cells

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Studies on solution processed Graphene-Nb2O5 nanocomposite based photoanode for dye-sensitized solar cells

Cited by 34 publications

References 23 publications

A detailed investigation on the performance of dye-sensitized solar cells based on reduced graphene oxide-doped TiO2 photoanode

A detailed investigation on the performance of dye-sensitized solar cells based on reduced graphene oxide-doped TiO2 photoanode

Graphene/Metal Oxide Nanocomposite Usage as Photoanode in Dye-Sensitized and Perovskite Solar Cells

Recent progress in electrospinning TiO2 nanostructured photo‐anode of dye‐sensitized solar cells

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Recent progress in electrospinning TiO₂ nanostructured photo‐anode of dye‐sensitized solar cells