Rutile versus anatase for quantum dot sensitized solar cell

Jia, Jianguang; Mu, Lili; Lin, Yuan; Zhou, Xiaowen

doi:10.1016/j.electacta.2018.01.186

Cited by 18 publications

(6 citation statements)

References 38 publications

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“…Anatase sphere-like nanoparticles are characterized by higher electron mobility and a lower charge recombination rate than the rod-like structure of the rutile phase. At the same time, rutile is thermodynamically more stable with better light reflecting properties compared to anatase [17].…”

Section: Introductionmentioning

confidence: 98%

Charge Transfer in Mixed-Phase TiO2 Photoelectrodes for Perovskite Solar Cells

et al. 2020

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In mesoscopic perovskite solar cells (PSCs) the recombination processes within the TiO2 photoelectrode and at the TiO2/perovskite interface limit power conversion efficiency. To overcome this challenge, we investigated the effect of TiO2 phase composition on the electronic structure of TiO2 photoelectrodes, as well as on PSCs performance. For this, a set of PSCs based on TiO2 thin films with different content of anatase and rutile particles was fabricated under ambient conditions. X-ray diffraction, optical spectroscopy and scanning electron microscopy were used to study the structural, morphological and optical characteristics of TiO2 powders and TiO2-based thin films. X-ray photoelectron spectroscopy (XPS) analysis of anatase revealed a cliff conduction band alignment of 0.2 eV with respect to the rutile. Energy band alignment at the anatase/rutile/perovskite interfaces deduced from the XPS data provides the possibility for interparticle electron transport from the rutile to anatase phase and the efficient blocking of electron recombination at the TiO2/perovskite interface, leading to efficient electron-hole separation in PSCs based on mixed-phase TiO2 photoelectrodes. PSCs based on TiO2 layers with 60/40 anatase/rutile ratio were characterized by optimized charge extraction and low level of recombination at the perovskite/TiO2 interface and showed the best energy conversion efficiency of 13.4% among the studied PSCs. Obtained results provide a simple and effective approach towards the development of the next generation high efficiency PSCs.

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Section: Introductionmentioning

confidence: 98%

Charge Transfer in Mixed-Phase TiO2 Photoelectrodes for Perovskite Solar Cells

et al. 2020

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“…4A, where R s is the equivalent series resistance, and R 1 , CPE1 and R 2 , CPE2 represent the charge transfer resistance and chemical capacitance at the CE/electrolyte and TiO 2 /PbS/electrolyte interfaces. The charge recombination rate constant ( k eff ) at the TiO 2 /PbS/electrolyte interface and the steady-state electron density ( n s ) in the TiO 2 conduction band were further calculated using the equations: 34,35 where f max is the frequency at the maximum of the Bode plots in Fig. 4B, k B is the Boltzmann constant, T is the absolute temperature, q is the elementary charge, and A and L represent the area and thickness of the TiO 2 /PbS film, respectively.…”

Section: Resultsmentioning

confidence: 99%

Section: Dalton Transactions Papermentioning

confidence: 99%

Enhanced film quality of PbS QD solid by eliminating the oxide traps through an in situ surface etching and passivation

Jia

Wang

et al. 2023

Dalton Trans.

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“…4 The typical structure of QDSSCs includes a photoanode, an electrolyte, and a counter electrode. 5 The photoanode film is a crucial part of QDSSCs, deciding the ability to generate and extract electrons. 6 The ideal photoanode film should have a high specific surface area for efficient adsorption of QDs, excellent electron injection and transfer, and appropriate crystal structure to obtain maximum light absorption.…”

Section: Introductionmentioning

confidence: 99%

“…The typical structure of QDSSCs includes a photoanode, an electrolyte, and a counter electrode . The photoanode film is a crucial part of QDSSCs, deciding the ability to generate and extract electrons .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Quantum Dot-Sensitized Solar Cells Based on a Transparent TiO₂ Film with Reasonable Load Resistance Design

Jiang

Dai

Wang

et al. 2022

ACS Appl. Energy Mater.

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While transparent photoanodes are highly desired for smart energy devices, their performance is still far from expectation. In the present work, a transparent TiO2 film was prepared using a two-step spin-coating method, which served as photoanodes of quantum dot-sensitized solar cells (QDSSCs). A porous TiO2 photoanode prepared by P25 was also fabricated for comparison. Compared with the porous TiO2 photoanode, QDSSCs based on the transparent TiO2 film showed an obviously declined short-circuit current density (J sc) but greatly improved fill factor (54.3%), resulting in a larger power conversion efficiency (4.32%). The reason is due to the decreased series resistance and increased shunt resistance of solar cells based on the transparent TiO2 photoanode, which is consistent with the requirement of solar cells to load resistance. The present work proves that the transparent TiO2 film has great potential in the field of transparent solar cells.

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Rutile versus anatase for quantum dot sensitized solar cell

Cited by 18 publications

References 38 publications

Charge Transfer in Mixed-Phase TiO2 Photoelectrodes for Perovskite Solar Cells

Charge Transfer in Mixed-Phase TiO2 Photoelectrodes for Perovskite Solar Cells

Enhanced film quality of PbS QD solid by eliminating the oxide traps through an in situ surface etching and passivation

Fabrication of Quantum Dot-Sensitized Solar Cells Based on a Transparent TiO₂ Film with Reasonable Load Resistance Design

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Rutile versus anatase for quantum dot sensitized solar cell

Cited by 18 publications

References 38 publications

Charge Transfer in Mixed-Phase TiO2 Photoelectrodes for Perovskite Solar Cells

Charge Transfer in Mixed-Phase TiO2 Photoelectrodes for Perovskite Solar Cells

Enhanced film quality of PbS QD solid by eliminating the oxide traps through an in situ surface etching and passivation

Fabrication of Quantum Dot-Sensitized Solar Cells Based on a Transparent TiO2 Film with Reasonable Load Resistance Design

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Fabrication of Quantum Dot-Sensitized Solar Cells Based on a Transparent TiO₂ Film with Reasonable Load Resistance Design