Dye-sensitized solar cells for efficient power generation under ambient lighting

Freitag, Marina; Teuscher, Joël; Saygılı, Yasemin; Zhang, Xiaoyu; Giordano, Fabrizio; Liska, Paul; Hua, Jing; Zakeeruddin, Shaik M.; Moser, Jacques-E.; Grätzel, Michaël; Hagfeldt, Anders

doi:10.1038/nphoton.2017.60

Cited by 929 publications

(680 citation statements)

References 45 publications

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“…[58] Research efforts have been dedicated to reduce the cost and to scale up the technology to commercial level. DSSCs consist of three major components,n amely photoanode,p hotocathode,a nd electrolyte.A tt he photoanode,e lectronsi nd ye molecules excited by the photons aret ransferred to aw ide band gap semiconductor such as TiO 2 or ZnO.T he redox couplei nt he electrolyte reduces the dye back to its ground state and in turn accepts electronsf rom the counter electrode catalyst.…”

Section: Catalyst In Dsscsmentioning

confidence: 99%

Scientific and Technological Assessment of Iron Pyrite for Use in Solar Devices

et al. 2017

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Iron pyrite (FeS2) holds an enormous potential as a low cost and non‐toxic photoelectrochemical and energy‐harvesting material owing to its interesting optical, electronic, and chemical properties along with elemental abundance. In this Review, low cost and scalable processing techniques to synthesize phase‐pure pyrite thin films and nanocubes are described, and the application of this material in various energy‐harvesting devices such as dye‐sensitized solar cells, photodiodes, and heterojunction solar cells is discussed. A detailed analysis of the electron transport in single‐crystal iron pyrite is presented to shed light on its bulk‐ and surface‐conduction properties, which could be useful in designing better pyrite solar cells and could be exploited for novel device architectures. Finally, future prospects and directions are discussed.

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Section: Catalyst In Dsscsmentioning

confidence: 99%

Scientific and Technological Assessment of Iron Pyrite for Use in Solar Devices

et al. 2017

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“…Iodide/triiodide redox shuttle has been the favorable choice historically, but it results in lower photovoltage due to higher (less positive) redox potential, higher dye regeneration overpotenial due to complex two step chemistry and corrosion of the DSCs components [160]. On the other hand, one electron redox shuttles such as cobalt and copper offer higher photovoltage, tunability, and less dye regeneration overpotential making them Titanium Dioxide -Material for a Sustainable Environmentpopular for recent studies [52,163]. For iodide/triiodide most commonly employed additives are Li + , GuNCS and 4-tBP, whereas one electron redox shuttles mainly employ Li + and 4-tBP only.…”

Section: Electrolyte Additivesmentioning

confidence: 99%

“…For efficient light harvesting different kinds of TiO 2 pastes (active layer for dye anchoring with scattering or reflective layer on top of it) are used for achieving specific features such as iodide/ triiodide systems mainly employ 18-20 nm size NPs based formulations, whereas for larger size redox shuttles such as cobalt and copper based systems 28-31 nm size NPs are employed [52,53]. This selectivity comes from the mass-transport related limitations of outer sphere based redox shuttles (cobalt and copper) which is mitigated by the larger pore size of bigger NP size based TiO 2 films [54].…”

Section: Introductionmentioning

confidence: 99%

Titanium Dioxide Modifications for Energy Conversion: Learnings from Dye-Sensitized Solar Cells

Cheema¹,

Joya²

2018

Titanium Dioxide - Material for a Sustainable Environment

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During the last two and half decade modifying anatase TiO 2 has appreciably enhanced our understanding and application of this semiconducting, non-toxic material. In the domain of DSCs, the main focus has been to achieve band adjustment to facilitate electron injection from anchored dyes, and high electronic mobility for photo-generated electron collection. In retrospection, there is a dire need to assimilate and summarize the findings of these studies to further catalyze the research, better understanding and comparison of the structure-property relationships in modifying TiO 2 efficiently for crucial photocatalytic, electrochemical and nanostructured applications. This chapter aims at categorizing the typical approaches used to modify TiO 2 in the domain of DSCs such as through TiO 2 paste additives, TiO 2 doping, metal oxides inclusion, dye solution co-adsorbing additives, post staining surface treatment additives and electrolyte additives. A summary of the consequences of these modifications on electron injection, charge extraction, electronic mobility, conduction band shift and surface states has been presented. This chapter is expected to hugely benefit the researchers employing TiO 2 in energy, catalysis and battery applications.

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“…The results show that 2,3-dioctylquinoxaline as the spacer exhibited the highest efficiency of 8.20% with a short-circuit photocurrent density of 17.83 mA cm −2 , an open-circuit photovoltage of 0.71 V, and a fill factor of 0.65, under standard global AM 1.5G solar light condition. Freitag et al [32] designed sensitizers (D35 and XY1) with the copper complex Cu(II/I)(tmby) as a redox shuttle (tmby, 4,4 ′ ,6,6 ′ -tetramethyl-2,2 ′ -bipyridine), showing that the highest photoelectronic conversion efficiency was 28.9%.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Investigation of the Photoelectrical Properties of Tetrabromophenol Blue- and Bromoxylenol Blue-Based Solar Cells

Liu

Ren

Wang

et al. 2018

Journal of Nanomaterials

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Tetrabromophenol blue and Bromoxylenol blue as the sensitizers of dye-sensitized solar cells (DSSCs) are measured in experiments. In order to better understand the photoelectrical properties of the two dyes, we obtain the UV-Vis spectra, fluorescence spectra, and current-voltage characteristics. The frontier molecular orbital, energy levels, the first hyperpolarizability, the first hyperpolarizability density, and molecular electrostatic potential are calculated with density functional theory (DFT) and time-dependent DFT (TDDFT). The critical factors including the light harvesting efficiency (LHE (Tetrabromophenol blue for 0.0284 and Bromoxylenol blue for 0.0290), the driving force of electron injection (ΔG inject ), x-axis direction dipole moment (μ normal ), the conduction band of edge of the semiconductor (ΔE CB ), and the excited-state lifetime (τ)) are computed, which have a close connection to the short-circuit current density (J sc ) and open-circuit voltage (V oc ). The results show that the J sc (0.09 mA/cm 2 ) and V oc (0.39 V) of Tetrabromophenol blue have larger values, which can be explained by a larger absolute value of ΔG inject , absolute value of μ normal , τ, and ΔE CB . Therefore, Tetrabromophenol blue displays well photoelectric conversion efficiency compared with Bromoxylenol blue.

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Dye-sensitized solar cells for efficient power generation under ambient lighting

Cited by 929 publications

References 45 publications

Scientific and Technological Assessment of Iron Pyrite for Use in Solar Devices

Scientific and Technological Assessment of Iron Pyrite for Use in Solar Devices

Titanium Dioxide Modifications for Energy Conversion: Learnings from Dye-Sensitized Solar Cells

Experimental and Theoretical Investigation of the Photoelectrical Properties of Tetrabromophenol Blue- and Bromoxylenol Blue-Based Solar Cells

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