Improving photoelectrical performance of dye sensitized solar cells by doping Y2O3:Tb3+ nanorods

Chen, Shangyou; Lin, Jianming; Wu, Jihuai

doi:10.1007/s10854-014-1840-3

Cited by 6 publications

(5 citation statements)

References 35 publications

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“…Incident photon to current efficiency (IPCE) however showed an improvement for the entire optical spectrum which suggests additional effects play a role in improving J SC . 179,180 In another study the interstitial incorporation of Y 3+ into the TiO 2 -lattice was confirmed by XRD. The surface area of mesoporous assemblies was slightly increased, increasing dye adsorption.…”

Section: Transition Metalsmentioning

confidence: 91%

“…This makes transition metals suitable materials to tune the CB structure. The transition metals discussed here are scandium, 152 vanadium, [153][154][155] chromium, 83,[156][157][158][159] manganese, [160][161][162] iron, 163,164 cobalt, 160,162 nickel, [165][166][167] copper, 162,168,169 zinc, 90,126,130,161,[170][171][172][173][174][175][176][177][178] yttrium, [179][180][181] zirconium, 102,140,[182][183][184] niobium, 44,60,70,71,102,154,[185][186]…”

Section: Transition Metalsmentioning

confidence: 99%

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Doping of TiO₂for sensitized solar cells

2015

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This review gives a detailed summary and evaluation of the use of TiO2 doping to improve the performance of dye sensitized solar cells. Doping has a major effect on the band structure and trap states of TiO2, which in turn affect important properties such as the conduction band energy, charge transport, recombination and collection. The defect states of TiO2 are highly dependent on the synthesis method and thus the effect of doping may vary for different synthesis techniques, making it difficult to compare the suitability of different dopants. High-throughput methods may be employed to achieve a rough prediction on the suitability of dopants for a specific synthesis method. It was however found that nearly every employed dopant can be used to increase device performance, indicating that the improvement is not so much caused by the dopant itself, as by the defects it eliminates from TiO2. Furthermore, with the field shifting from dye sensitized solar cells to perovskite solar cells, the role doping can play to further advance this emerging field is also discussed.

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Section: Transition Metalsmentioning

confidence: 91%

Section: Transition Metalsmentioning

confidence: 99%

Doping of TiO₂for sensitized solar cells

2015

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“…One method known to improve the efficiency of DSSCs is to dope the titania with rare-earth metal oxides. Various mechanisms have z E-mail: f.zamborini@louisville.edu; bruce.alphenaar@louisville.edu been proposed for the observed improvement, including increased surface area, 18,19 enhanced dye coverage, 20,21 filling of deep and surface traps, [22][23][24] band-gap narrowing, 25 improvement in electron injection and transport properties, 19,23,[26][27][28] reduced recombination, 20,21,27 and reduced electron diffusion resistance. 21,23,27,29 Results vary with different lanthanide species and also among different reports.…”

mentioning

confidence: 99%

Enhancing the Photovoltaic Performance of Dye-Sensitized Solar Cells with Rare-Earth Metal Oxide Nanoparticles

Kharel

Zamborini

Alphenaar

2018

J. Electrochem. Soc.

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Doping titania with rare-earth metals improves the photoconversion efficiency (PCE) of dye sensitized solar cells (DSSCs). In most reported cases, the overall cell quality is not optimal, making it unclear what role the rare earth oxide metal plays in the improvement, if any. Here we incorporate <100 nm diameter nanoparticles of neodymium and erbium oxide into titania films and test their performance in high quality DSSCs. The doping level for optimized cells is 2.0% and 1.0% for neodymium oxide and erbium oxide by weight, respectively. This results in a 5 to 10% increase in PCE for the rare earth oxide doped DSSCs relative to undoped DSSCs, with erbium oxide being the best. The rare-earth metal-doped films exhibit a 20-25% larger dye loading and the loading was maximum at the same doping levels where the PCE was maximum, showing this is a big contributor to the improvement. The surface area is larger with rare-earth doped titania as determined by atomic force microscopy and BET analysis, explaining the higher dye loading. The cell impedance is lower with rare-earth doped samples, showing that the rare-earth metal oxide also facilitates electron transport through the mesoporous titania, improving the collection efficiency of the photoexcited electrons.

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“…Recently, Kharel et al stated that alike RE metals, RE oxides (REO‐ Er 2 O 3 and Nd 2 O 3 ) doped into TiO 2 also show improvement in the photoconversion efficiency of DSSCs . This enhancement by REO‐doping was observed because of increased dye loading capacity due to increased surface area and enhanced electron transport efficiency due to higher conductivity of mesoporous film of TiO 2 . The main advantage of REO‐doped TiO 2 was that REOs deactivate surface as well as deep TiO 2 trap states, which lead to improved electron transport rates and higher solar cell efficiency .…”

Section: Re‐doped Tio2 For Spectral Conversionmentioning

confidence: 99%

A review on spectral converting nanomaterials as a photoanode layer in dye‐sensitized solar cells with implementation in energy storage devices

et al. 2020

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The present review article aims at the application of rare-earth-based titanium dioxide nanocrystals as spectral converters in photovoltaic devices, with special focus on dye-sensitized solar cells (DSSCs). Additionally, the implementation of DSSCs in energy storage, more importantly, DSSCs and lithium-ion batteries (LIB) integrated devices are systematically described. The absorption in DSSCs is mainly confined to the visible solar spectrum, which is one of the main reasons behind its limited power conversion efficiency. This has led to shifting of research focus on broadening the light absorption range of DSSCs, which can further lead to enhancement in overall power conversion efficiency. TiO 2 , doped with rare-earth (RE) ions, is often used as an electron transport layer (ETL) in DSSCs to overcome this absorption-related issue. This article gives a detailed review of TiO 2 doped with different RE ions, as an electron transport layer in DSSCs. More importantly, we have summarized all the recent important findings with the application of DSSCs in LIB and photocapacitors. K E Y W O R D S DSSCs, efficiency, electron transport layer, energy storage, photovoltaics, rare-earth 1 | OBJECTIVES • The main objective of this review article is to provide an overview of TiO 2 -based photoanode layer used in dye-sensitized solar cells (DSSCs).

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Improving photoelectrical performance of dye sensitized solar cells by doping Y2O3:Tb3+ nanorods

Cited by 6 publications

References 35 publications

Doping of TiO₂for sensitized solar cells

Doping of TiO₂for sensitized solar cells

Enhancing the Photovoltaic Performance of Dye-Sensitized Solar Cells with Rare-Earth Metal Oxide Nanoparticles

A review on spectral converting nanomaterials as a photoanode layer in dye‐sensitized solar cells with implementation in energy storage devices

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Improving photoelectrical performance of dye sensitized solar cells by doping Y2O3:Tb3+ nanorods

Cited by 6 publications

References 35 publications

Doping of TiO2for sensitized solar cells

Doping of TiO2for sensitized solar cells

Enhancing the Photovoltaic Performance of Dye-Sensitized Solar Cells with Rare-Earth Metal Oxide Nanoparticles

A review on spectral converting nanomaterials as a photoanode layer in dye‐sensitized solar cells with implementation in energy storage devices

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Doping of TiO₂for sensitized solar cells

Doping of TiO₂for sensitized solar cells